diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index 096f9a6..605a06a 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -1,9 +1,9 @@
 <!--
 Thank you for reporting an issue.
 
-This issue tracker is for bugs and issues found within Alibaba Cloud SDK for PHP.
+This issue tracker is for bugs and issues for PHP.
 If you require more general support please file an issue on our help
-repo. https://help.aliyun.com/
+repo.
 
 
 Please fill in as much of the template below as you're able.
diff --git a/.github/ISSUE_TEMPLATE/2-feature-request.md b/.github/ISSUE_TEMPLATE/2-feature-request.md
index 602eb72..08d60d6 100644
--- a/.github/ISSUE_TEMPLATE/2-feature-request.md
+++ b/.github/ISSUE_TEMPLATE/2-feature-request.md
@@ -5,7 +5,7 @@ about: Suggest an idea for this project
 ---
 
 <!--
-Thank you for suggesting an idea to make Alibaba Cloud SDK better.
+Thank you for suggesting an idea.
 
 Please fill in as much of the template below as you're able.
 -->
diff --git a/.github/ISSUE_TEMPLATE/3-help.md b/.github/ISSUE_TEMPLATE/3-help.md
index 731f2d8..2ca0d0a 100644
--- a/.github/ISSUE_TEMPLATE/3-help.md
+++ b/.github/ISSUE_TEMPLATE/3-help.md
@@ -1,10 +1,10 @@
 ---
-name: "⁉️ Need help with Alibaba Cloud?"
+name: "⁉️ Need help?"
 about: Please submit a work order in our work order system
 
 ---
 
 If you have a question about Alibaba Cloud that is not a bug report or feature
-request, please post it in https://selfservice.console.aliyun.com/ticket/createIndex
+request, please post it
 
 Questions posted to this repository will be closed.
diff --git a/.github/ISSUE_TEMPLATE/6-help-cn.md b/.github/ISSUE_TEMPLATE/6-help-cn.md
index f63c808..0e210b6 100644
--- a/.github/ISSUE_TEMPLATE/6-help-cn.md
+++ b/.github/ISSUE_TEMPLATE/6-help-cn.md
@@ -1,10 +1,10 @@
 ---
-name: "⁉️ 需要阿里云的帮助？"
+name: "⁉️ 需要帮助？"
 about: 请在我们的工单系统提出工单
 
 ---
 
 如果您对阿里云 SDK 的问题不是 Bug 或希望添加新功能，
-请在我们的工单系统提出工单：https://selfservice.console.aliyun.com/ticket/createIndex
+请在我们的工单系统提出工单
 
 此类问题将被关闭。
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 849f5b5..08fa6fd 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -4,7 +4,6 @@ the requirements below.
 
 Bug fixes and new features should include tests and possibly benchmarks.
 
-Contributors guide: https://github.com/aliyun/credentials-php/blob/master/CONTRIBUTING.md
 -->
 
 ##### You need to complete
diff --git a/composer.json b/composer.json
index 81f9745..0283032 100644
--- a/composer.json
+++ b/composer.json
@@ -1,31 +1,19 @@
 {
-    "name": "alibabacloud/credentials",
-    "homepage": "https://www.alibabacloud.com/",
-    "description": "Alibaba Cloud Credentials for PHP",
+    "name": "{{ipdt}}/credentials",
     "keywords": [
         "sdk",
         "tool",
         "cloud",
         "client",
-        "aliyun",
         "library",
-        "alibaba",
-        "Credentials",
-        "alibabacloud"
+        "credentials"
     ],
     "type": "library",
     "license": "Apache-2.0",
     "support": {
-        "source": "https://github.com/aliyun/credentials-php",
-        "issues": "https://github.com/aliyun/credentials-php/issues"
+        "source": "https://github.com/{{ipdt}}/credentials-php",
+        "issues": "https://github.com/{{ipdt}}/credentials-php/issues"
     },
-    "authors": [
-        {
-            "name": "Alibaba Cloud SDK",
-            "email": "sdk-team@alibabacloud.com",
-            "homepage": "http://www.alibabacloud.com"
-        }
-    ],
     "require": {
         "php": ">=5.6",
         "ext-curl": "*",
diff --git a/src/AccessKeyCredential.php b/src/AccessKeyCredential.php
deleted file mode 100644
index 05a0132..0000000
--- a/src/AccessKeyCredential.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials;
-
-use AlibabaCloud\Credentials\Utils\Filter;
-use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-
-/**
- * @deprecated
- * Use the AccessKey to complete the authentication.
- */
-class AccessKeyCredential implements CredentialsInterface
-{
-    /**
-     * @var string
-     */
-    private $accessKeyId;
-
-    /**
-     * @var string
-     */
-    private $accessKeySecret;
-
-    /**
-     * AccessKeyCredential constructor.
-     *
-     * @param string $access_key_id     Access key ID
-     * @param string $access_key_secret Access Key Secret
-     */
-    public function __construct($access_key_id, $access_key_secret)
-    {
-        Filter::accessKey($access_key_id, $access_key_secret);
-
-        $this->accessKeyId = $access_key_id;
-        $this->accessKeySecret = $access_key_secret;
-    }
-
-    /**
-     * @return string
-     */
-    public function getAccessKeyId()
-    {
-        return $this->accessKeyId;
-    }
-
-    /**
-     * @return string
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->accessKeySecret;
-    }
-
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return "$this->accessKeyId#$this->accessKeySecret";
-    }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return new ShaHmac1Signature();
-    }
-
-    public function getSecurityToken()
-    {
-        return '';
-    }
-    /**
-     * @inheritDoc
-     */
-    public function getCredential()
-    {
-        return new CredentialModel([
-            'accessKeyId' => $this->accessKeyId,
-            'accessKeySecret' => $this->accessKeySecret,
-            'type' => 'access_key',
-        ]);
-    }
-}
diff --git a/src/Configure/Config.php b/src/Configure/Config.php
new file mode 100644
index 0000000..5b8dac9
--- /dev/null
+++ b/src/Configure/Config.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace AlibabaCloud\Configure;
+
+class Config
+{
+    const ENV_PREFIX = "ALIBABA_CLOUD_";
+    const KEY = "AlibabaCloud";
+    const STS_DEFAULT_ENDPOINT = "sts.aliyuncs.com";
+    const ENDPOINT_SUFFIX = "aliyuncs.com";
+    const CREDENTIAL_FILE_PATH = ".alibabacloud";
+    const CLI_CONFIG_DIR = ".aliyun";
+    const ECS_METADATA_HOST = "100.100.100.200";
+    const ECS_METADATA_HEADER_PREFIX = "X-aliyun-";
+    const SIGN_PREFIX = "aliyun_v4"; // cloud_v4
+    const SIGNATURE_TYPE_PREFIX = "ACS4-";// CLOUD4-
+}
diff --git a/src/Credential.php b/src/Credential.php
index fb89018..aed3e86 100644
--- a/src/Credential.php
+++ b/src/Credential.php
@@ -17,19 +17,13 @@
 use InvalidArgumentException;
 use RuntimeException;
 
-/**
- * Class Credential
- *
- * @package AlibabaCloud\Credentials
- *
- */
 class Credential
 {
 
     /**
      * Version of the Client
      */
-    const VERSION = '1.1.5';
+    const VERSION = '1.0.0';
 
     /**
      * @var Config
@@ -124,7 +118,7 @@ private function getCredentials($config)
                     'policy' => $config->policy,
                     'durationSeconds' => $config->roleSessionExpiration,
                     'externalId' => $config->externalId,
-                    'stsEndpoint' => $config->STSEndpoint,
+                    'stsEndpoint' => $config->stsEndpoint,
                 ], [
                     'connectTimeout' => $config->connectTimeout,
                     'readTimeout' => $config->readTimeout,
@@ -135,7 +129,7 @@ private function getCredentials($config)
                     'publicKeyId' => $config->publicKeyId,
                     'privateKeyFile' => $config->privateKeyFile,
                     'durationSeconds' => $config->roleSessionExpiration,
-                    'stsEndpoint' => $config->STSEndpoint,
+                    'stsEndpoint' => $config->stsEndpoint,
                 ], [
                     'connectTimeout' => $config->connectTimeout,
                     'readTimeout' => $config->readTimeout,
@@ -158,7 +152,7 @@ private function getCredentials($config)
                     'roleSessionName' => $config->roleSessionName,
                     'policy' => $config->policy,
                     'durationSeconds' => $config->roleSessionExpiration,
-                    'stsEndpoint' => $config->STSEndpoint,
+                    'stsEndpoint' => $config->stsEndpoint,
                 ], [
                     'connectTimeout' => $config->connectTimeout,
                     'readTimeout' => $config->readTimeout,
@@ -166,7 +160,7 @@ private function getCredentials($config)
                 return new CredentialsProviderWrap('oidc_role_arn', $provider);
             case "credentials_uri":
                 $provider = new URLCredentialsProvider([
-                    'credentialsURI' => $config->credentialsURI,
+                    'credentialsURI' => $config->credentialsUri,
                 ], [
                     'connectTimeout' => $config->connectTimeout,
                     'readTimeout' => $config->readTimeout,
@@ -195,66 +189,6 @@ public function getConfig()
         return $this->config->toMap();
     }
 
-    /**
-     * @deprecated use getCredential() instead
-     *
-     * @return string
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function getType()
-    {
-        return $this->credential->getCredential()->getType();
-    }
-
-    /**
-     * @deprecated use getCredential() instead
-     * 
-     * @return string
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function getAccessKeyId()
-    {
-        return $this->credential->getCredential()->getAccessKeyId();
-    }
-
-    /**
-     * @deprecated use getCredential() instead
-     * 
-     * @return string
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->credential->getCredential()->getAccessKeySecret();
-    }
-
-    /**
-     * @deprecated use getCredential() instead
-     * 
-     * @return string
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function getSecurityToken()
-    {
-        return $this->credential->getCredential()->getSecurityToken();
-    }
-
-    /**
-     * @deprecated use getCredential() instead
-     * 
-     * @return string
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function getBearerToken()
-    {
-        return $this->credential->getCredential()->getBearerToken();
-    }
-
     /**
      * @param string $name
      * @param array  $arguments
diff --git a/src/Credential/Config.php b/src/Credential/Config.php
index 1fb57e3..3157691 100644
--- a/src/Credential/Config.php
+++ b/src/Credential/Config.php
@@ -24,9 +24,6 @@ public function toMap()
         if (null !== $this->bearerToken) {
             $res['bearerToken'] = $this->bearerToken;
         }
-        if (null !== $this->durationSeconds) {
-            $res['durationSeconds'] = $this->durationSeconds;
-        }
         if (null !== $this->roleArn) {
             $res['roleArn'] = $this->roleArn;
         }
@@ -48,14 +45,14 @@ public function toMap()
         if (null !== $this->roleName) {
             $res['roleName'] = $this->roleName;
         }
-        if (null !== $this->credentialsURI) {
-            $res['credentialsURI'] = $this->credentialsURI;
+        if (null !== $this->credentialsUri) {
+            $res['credentialsUri'] = $this->credentialsUri;
         }
         if (null !== $this->type) {
             $res['type'] = $this->type;
         }
-        if (null !== $this->STSEndpoint) {
-            $res['STSEndpoint'] = $this->STSEndpoint;
+        if (null !== $this->stsEndpoint) {
+            $res['stsEndpoint'] = $this->stsEndpoint;
         }
         if (null !== $this->externalId) {
             $res['externalId'] = $this->externalId;
@@ -81,9 +78,6 @@ public static function fromMap($map = [])
         if (isset($map['bearerToken'])) {
             $model->bearerToken = $map['bearerToken'];
         }
-        if (isset($map['durationSeconds'])) {
-            $model->durationSeconds = $map['durationSeconds'];
-        }
         if (isset($map['roleArn'])) {
             $model->roleArn = $map['roleArn'];
         }
@@ -105,14 +99,14 @@ public static function fromMap($map = [])
         if (isset($map['roleName'])) {
             $model->roleName = $map['roleName'];
         }
-        if (isset($map['credentialsURI'])) {
-            $model->credentialsURI = $map['credentialsURI'];
+        if (isset($map['credentialsUri'])) {
+            $model->credentialsUri = $map['credentialsUri'];
         }
         if (isset($map['type'])) {
             $model->type = $map['type'];
         }
-        if (isset($map['STSEndpoint'])) {
-            $model->STSEndpoint = $map['STSEndpoint'];
+        if (isset($map['stsEndpoint'])) {
+            $model->stsEndpoint = $map['stsEndpoint'];
         }
         if (isset($map['externalId'])) {
             $model->externalId = $map['externalId'];
@@ -203,7 +197,7 @@ public static function fromMap($map = [])
      * @description sts endpoint
      * @var string
      */
-    public $STSEndpoint;
+    public $stsEndpoint;
 
     public $publicKeyId;
 
@@ -231,37 +225,7 @@ public static function fromMap($map = [])
      * @description credentials URI
      * @var string
      */
-    public $credentialsURI;
-
-    /**
-     * @deprecated
-     */
-    public $metadataTokenDuration;
-
-    /**
-     * @deprecated
-     */
-    public $durationSeconds;
-
-    /**
-     * @deprecated
-     */
-    public $host;
-
-    /**
-     * @deprecated
-     */
-    public $expiration;
-
-    /**
-     * @deprecated
-     */
-    public $certFile = "";
-
-    /**
-     * @deprecated
-     */
-    public $certPassword = "";
+    public $credentialsUri;
 
     /**
      * @internal
diff --git a/src/Credentials.php b/src/Credentials.php
index f064b86..cdcecf5 100644
--- a/src/Credentials.php
+++ b/src/Credentials.php
@@ -8,11 +8,6 @@
 use ReflectionException;
 use RuntimeException;
 
-/**
- * Class Credentials
- *
- * @package AlibabaCloud\Credentials
- */
 class Credentials
 {
     use MockTrait;
diff --git a/src/CredentialsInterface.php b/src/CredentialsInterface.php
index 0d109e2..463d82d 100644
--- a/src/CredentialsInterface.php
+++ b/src/CredentialsInterface.php
@@ -3,14 +3,7 @@
 namespace AlibabaCloud\Credentials;
 
 use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\SignatureInterface;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Interface CredentialsInterface
- *
- * @codeCoverageIgnore
- */
 interface CredentialsInterface
 {
     /**
@@ -19,12 +12,6 @@ interface CredentialsInterface
      */
     public function __toString();
 
-    /**
-     * @deprecated
-     * @return SignatureInterface
-     */
-    public function getSignature();
-
     /**
      * @return CredentialModel
      */
diff --git a/src/CredentialsProviderWrap.php b/src/CredentialsProviderWrap.php
index 4e8611e..9d623b3 100644
--- a/src/CredentialsProviderWrap.php
+++ b/src/CredentialsProviderWrap.php
@@ -5,12 +5,6 @@
 use AlibabaCloud\Credentials\Credential\CredentialModel;
 use AlibabaCloud\Credentials\Providers\CredentialsProvider;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class CredentialsProviderWrap
- * 
- * @package AlibabaCloud\Credentials
- */
 class CredentialsProviderWrap implements CredentialsInterface
 {
     /**
@@ -65,12 +59,4 @@ public function __toString()
     {
         return "credentialsProviderWrap#$this->typeName";
     }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return null;
-    }
 }
\ No newline at end of file
diff --git a/src/EcsRamRoleCredential.php b/src/EcsRamRoleCredential.php
deleted file mode 100644
index ba66c0d..0000000
--- a/src/EcsRamRoleCredential.php
+++ /dev/null
@@ -1,199 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials;
-
-use AlibabaCloud\Credentials\Providers\EcsRamRoleCredentialsProvider;
-use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use AlibabaCloud\Credentials\Request\Request;
-use AlibabaCloud\Credentials\Utils\Filter;
-use Exception;
-use GuzzleHttp\Exception\GuzzleException;
-use InvalidArgumentException;
-use RuntimeException;
-
-/**
- * @deprecated
- * Use the RAM role of an ECS instance to complete the authentication.
- */
-class EcsRamRoleCredential implements CredentialsInterface
-{
-
-    /**
-     * @var string
-     */
-    private $roleName;
-
-    /**
-     * @var boolean
-     */
-    private $disableIMDSv1;
-
-    /**
-     * @var int
-     */
-    private $metadataTokenDuration;
-
-
-    /**
-     * EcsRamRoleCredential constructor.
-     *
-     * @param $role_name
-     */
-    public function __construct($role_name = null, $disable_imdsv1 = false, $metadata_token_duration = 21600)
-    {
-        Filter::roleName($role_name);
-
-        $this->roleName = $role_name;
-
-        Filter::disableIMDSv1($disable_imdsv1);
-
-        $this->disableIMDSv1 = $disable_imdsv1;
-
-        $this->metadataTokenDuration = $metadata_token_duration;
-    }
-
-    /**
-     * @return string
-     * @throws GuzzleException
-     * @throws Exception
-     */
-    public function getRoleName()
-    {
-        if ($this->roleName !== null) {
-            return $this->roleName;
-        }
-
-        $this->roleName = $this->getRoleNameFromMeta();
-
-        return $this->roleName;
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     */
-    public function getRoleNameFromMeta()
-    {
-        $options = [
-            'http_errors' => false,
-            'timeout' => 1,
-            'connect_timeout' => 1,
-        ];
-
-        $result = Request::createClient()->request(
-            'GET',
-            'http://100.100.100.200/latest/meta-data/ram/security-credentials/',
-            $options
-        );
-
-        if ($result->getStatusCode() === 404) {
-            throw new InvalidArgumentException('The role name was not found in the instance');
-        }
-
-        if ($result->getStatusCode() !== 200) {
-            throw new RuntimeException('Error retrieving credentials from result: ' . $result->getBody());
-        }
-
-        $role_name = (string) $result;
-        if (!$role_name) {
-            throw new RuntimeException('Error retrieving credentials from result is empty');
-        }
-
-        return $role_name;
-    }
-
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return "roleName#$this->roleName";
-    }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return new ShaHmac1Signature();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeyId()
-    {
-        return $this->getSessionCredential()->getAccessKeyId();
-    }
-
-    /**
-     * @return AlibabaCloud\Credentials\Providers\Credentials
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    protected function getSessionCredential()
-    {
-        $params = [
-            "roleName" => $this->roleName,
-            'disableIMDSv1' => $this->disableIMDSv1,
-            'metadataTokenDuration' => $this->metadataTokenDuration,
-        ];
-        return (new EcsRamRoleCredentialsProvider($params))->getCredentials();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->getSessionCredential()->getAccessKeySecret();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getSecurityToken()
-    {
-        return $this->getSessionCredential()->getSecurityToken();
-    }
-
-    /**
-     * @return int
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getExpiration()
-    {
-        return $this->getSessionCredential()->getExpiration();
-    }
-
-    /**
-     * @return bool
-     */
-    public function isDisableIMDSv1()
-    {
-        return $this->disableIMDSv1;
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function getCredential()
-    {
-        $credentials = $this->getSessionCredential();
-        return new CredentialModel([
-            'accessKeyId' => $credentials->getAccessKeyId(),
-            'accessKeySecret' => $credentials->getAccessKeySecret(),
-            'securityToken' => $credentials->getSecurityToken(),
-            'type' => 'ecs_ram_role',
-        ]);
-    }
-
-}
diff --git a/src/Providers/CLIProfileCredentialsProvider.php b/src/Providers/CLIProfileCredentialsProvider.php
index f627668..0ce305d 100644
--- a/src/Providers/CLIProfileCredentialsProvider.php
+++ b/src/Providers/CLIProfileCredentialsProvider.php
@@ -4,13 +4,8 @@
 
 use AlibabaCloud\Credentials\Utils\Helper;
 use RuntimeException;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class CLIProfileCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class CLIProfileCredentialsProvider implements CredentialsProvider
 {
 
@@ -37,8 +32,8 @@ public function __construct(array $params = [])
 
     private function filterProfileName(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_PROFILE')) {
-            $this->profileName = Helper::env('ALIBABA_CLOUD_PROFILE');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'PROFILE')) {
+            $this->profileName = Helper::env(Config::ENV_PREFIX . 'PROFILE');
         }
 
         if (isset($params['profileName'])) {
@@ -146,7 +141,7 @@ protected function reloadCredentialsProvider($profileFile, $profileName)
      */
     public function getCredentials()
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_CLI_PROFILE_DISABLED') && Helper::env('ALIBABA_CLOUD_CLI_PROFILE_DISABLED') === true) {
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'CLI_PROFILE_DISABLED') && Helper::env(Config::ENV_PREFIX . 'CLI_PROFILE_DISABLED') === true) {
             throw new RuntimeException('CLI credentials file is disabled');
         }
         $cliProfileFile = self::getDefaultFile();
@@ -172,7 +167,7 @@ private function getDefaultFile()
     {
         return Helper::getHomeDirectory() .
             DIRECTORY_SEPARATOR .
-            '.aliyun' .
+            Config::CLI_CONFIG_DIR .
             DIRECTORY_SEPARATOR .
             'config.json';
     }
diff --git a/src/Providers/ChainProvider.php b/src/Providers/ChainProvider.php
deleted file mode 100644
index d6c1540..0000000
--- a/src/Providers/ChainProvider.php
+++ /dev/null
@@ -1,188 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Providers;
-
-use AlibabaCloud\Credentials\Credentials;
-use AlibabaCloud\Credentials\Utils\Helper;
-use Closure;
-use InvalidArgumentException;
-use RuntimeException;
-
-/**
- * @deprecated
- * Class ChainProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
-class ChainProvider
-{
-    /**
-     * @var array
-     */
-    private static $customChains;
-
-    /**
-     * @param callable ...$providers
-     */
-    public static function set(...$providers)
-    {
-        if (empty($providers)) {
-            throw new InvalidArgumentException('No providers in chain');
-        }
-
-        foreach ($providers as $provider) {
-            if (!$provider instanceof Closure) {
-                throw new InvalidArgumentException('Providers must all be Closures');
-            }
-        }
-
-        self::$customChains = $providers;
-    }
-
-    /**
-     * @return bool
-     */
-    public static function hasCustomChain()
-    {
-        return (bool)self::$customChains;
-    }
-
-    public static function flush()
-    {
-        self::$customChains = [];
-    }
-
-    /**
-     * @param string $name
-     */
-    public static function customProvider($name)
-    {
-        foreach (self::$customChains as $provider) {
-            $provider();
-
-            if (Credentials::has($name)) {
-                break;
-            }
-        }
-    }
-
-    /**
-     * @param string $name
-     */
-    public static function defaultProvider($name)
-    {
-        $providers = [
-            self::env(),
-            self::ini(),
-            self::instance(),
-        ];
-
-        foreach ($providers as $provider) {
-            $provider();
-
-            if (Credentials::has($name)) {
-                break;
-            }
-        }
-    }
-
-    /**
-     * @return Closure
-     */
-    public static function env()
-    {
-        return static function () {
-            $accessKeyId     = Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID');
-            $accessKeySecret = Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
-
-            if ($accessKeyId && $accessKeySecret) {
-                Credentials::set(
-                    self::getDefaultName(),
-                    [
-                        'type'              => 'access_key',
-                        'access_key_id'     => $accessKeyId,
-                        'access_key_secret' => $accessKeySecret,
-                    ]
-                );
-            }
-        };
-    }
-
-    /**
-     * @return string
-     */
-    public static function getDefaultName()
-    {
-        $name = Helper::envNotEmpty('ALIBABA_CLOUD_PROFILE');
-
-        if ($name) {
-            return $name;
-        }
-
-        return 'default';
-    }
-
-    /**
-     * @return Closure
-     */
-    public static function ini()
-    {
-        return static function () {
-            $filename = Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_FILE');
-            if (!$filename) {
-                $filename = self::getDefaultFile();
-            }
-
-            if (!Helper::inOpenBasedir($filename)) {
-                return;
-            }
-
-            if ($filename !== self::getDefaultFile() && (!\is_readable($filename) || !\is_file($filename))) {
-                throw new RuntimeException(
-                    'Credentials file is not readable: ' . $filename
-                );
-            }
-
-            $file_array = \parse_ini_file($filename, true);
-
-            if (\is_array($file_array) && !empty($file_array)) {
-                foreach (\array_change_key_case($file_array) as $name => $configures) {
-                    Credentials::set($name, $configures);
-                }
-            }
-        };
-    }
-
-    /**
-     * Get the default credential file.
-     *
-     * @return string
-     */
-    public static function getDefaultFile()
-    {
-        return Helper::getHomeDirectory() .
-               DIRECTORY_SEPARATOR .
-               '.alibabacloud' .
-               DIRECTORY_SEPARATOR .
-               'credentials';
-    }
-
-    /**
-     * @return Closure
-     */
-    public static function instance()
-    {
-        return static function () {
-            $instance = Helper::envNotEmpty('ALIBABA_CLOUD_ECS_METADATA');
-            if ($instance) {
-                Credentials::set(
-                    self::getDefaultName(),
-                    [
-                        'type'      => 'ecs_ram_role',
-                        'role_name' => $instance,
-                    ]
-                );
-            }
-        };
-    }
-}
\ No newline at end of file
diff --git a/src/Providers/Credentials.php b/src/Providers/Credentials.php
index bfd4fe3..56e4e5a 100644
--- a/src/Providers/Credentials.php
+++ b/src/Providers/Credentials.php
@@ -2,12 +2,6 @@
 
 namespace AlibabaCloud\Credentials\Providers;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class Credentials
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class Credentials
 {
 
diff --git a/src/Providers/CredentialsProvider.php b/src/Providers/CredentialsProvider.php
index ddbd1a1..cd7f6fd 100644
--- a/src/Providers/CredentialsProvider.php
+++ b/src/Providers/CredentialsProvider.php
@@ -2,13 +2,6 @@
 
 namespace AlibabaCloud\Credentials\Providers;
 
-
-/**
- * @internal This class is intended for internal use within the package. 
- * Interface CredentialsInterface
- *
- * @codeCoverageIgnore
- */
 interface CredentialsProvider
 {
 
diff --git a/src/Providers/DefaultCredentialsProvider.php b/src/Providers/DefaultCredentialsProvider.php
index c4725b9..caf215f 100644
--- a/src/Providers/DefaultCredentialsProvider.php
+++ b/src/Providers/DefaultCredentialsProvider.php
@@ -7,13 +7,8 @@
 use InvalidArgumentException;
 use RuntimeException;
 use Exception;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class DefaultCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class DefaultCredentialsProvider implements CredentialsProvider
 {
 
@@ -62,9 +57,9 @@ private function createDefaultChain()
             new EnvironmentVariableCredentialsProvider(),
         ];
         if (
-            Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')
-            && Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_PROVIDER_ARN')
-            && Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_TOKEN_FILE')
+            Helper::envNotEmpty(Config::ENV_PREFIX . 'ROLE_ARN')
+            && Helper::envNotEmpty(Config::ENV_PREFIX . 'OIDC_PROVIDER_ARN')
+            && Helper::envNotEmpty(Config::ENV_PREFIX . 'OIDC_TOKEN_FILE')
         ) {
             array_push(
                 self::$defaultProviders,
@@ -83,7 +78,7 @@ private function createDefaultChain()
             self::$defaultProviders,
             new EcsRamRoleCredentialsProvider()
         );
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_URI')) {
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'CREDENTIALS_URI')) {
             array_push(
                 self::$defaultProviders,
                 new URLCredentialsProvider()
diff --git a/src/Providers/EcsRamRoleCredentialsProvider.php b/src/Providers/EcsRamRoleCredentialsProvider.php
index 8dffb50..50ad656 100644
--- a/src/Providers/EcsRamRoleCredentialsProvider.php
+++ b/src/Providers/EcsRamRoleCredentialsProvider.php
@@ -9,20 +9,15 @@
 use InvalidArgumentException;
 use RuntimeException;
 use AlibabaCloud\Credentials\Credential\RefreshResult;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class EcsRamRoleCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class EcsRamRoleCredentialsProvider extends SessionCredentialsProvider
 {
 
     /**
      * @var string
      */
-    private $metadataHost = 'http://100.100.100.200';
+    private $metadataHost = 'http://' . Config::ECS_METADATA_HOST;
 
     /**
      * @var string
@@ -90,8 +85,8 @@ private function filterOptions(array $options)
 
     private function filterRoleName(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ECS_METADATA')) {
-            $this->roleName = Helper::env('ALIBABA_CLOUD_ECS_METADATA');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ECS_METADATA')) {
+            $this->roleName = Helper::env(Config::ENV_PREFIX . 'ECS_METADATA');
         }
 
         if (isset($params['roleName'])) {
@@ -101,8 +96,8 @@ private function filterRoleName(array $params)
 
     private function filterDisableECSIMDSv1($params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_IMDSV1_DISABLED')) {
-            $this->disableIMDSv1 = Helper::env('ALIBABA_CLOUD_IMDSV1_DISABLED') === true ? true : false;
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'IMDSV1_DISABLED')) {
+            $this->disableIMDSv1 = Helper::env(Config::ENV_PREFIX . 'IMDSV1_DISABLED') === true ? true : false;
         }
 
         if (isset($params['disableIMDSv1'])) {
@@ -120,7 +115,7 @@ private function filterDisableECSIMDSv1($params)
      */
     public function refreshCredentials()
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ECS_METADATA_DISABLED') && Helper::env('ALIBABA_CLOUD_ECS_METADATA_DISABLED') === true) {
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ECS_METADATA_DISABLED') && Helper::env(Config::ENV_PREFIX . 'ECS_METADATA_DISABLED') === true) {
             throw new RuntimeException('IMDS credentials is disabled');
         }
 
@@ -135,7 +130,7 @@ public function refreshCredentials()
 
         $metadataToken = $this->getMetadataToken();
         if (!is_null($metadataToken)) {
-            $options['headers']['X-aliyun-ecs-metadata-token'] = $metadataToken;
+            $options['headers'][Config::ECS_METADATA_HEADER_PREFIX . 'ecs-metadata-token'] = $metadataToken;
         }
 
         $result = Request::createClient()->request('GET', $url, $options);
@@ -181,12 +176,12 @@ private function getRoleNameFromMeta()
 
         $metadataToken = $this->getMetadataToken();
         if (!is_null($metadataToken)) {
-            $options['headers']['X-aliyun-ecs-metadata-token'] = $metadataToken;
+            $options['headers'][Config::ECS_METADATA_HEADER_PREFIX . 'ecs-metadata-token'] = $metadataToken;
         }
 
         $result = Request::createClient()->request(
             'GET',
-            'http://100.100.100.200/latest/meta-data/ram/security-credentials/',
+            $this->metadataHost . $this->ecsUri,
             $options
         );
 
@@ -219,7 +214,7 @@ private function getMetadataToken()
         $options = Request::commonOptions();
         $options['read_timeout'] = $this->readTimeout;
         $options['connect_timeout'] = $this->connectTimeout;
-        $options['headers']['X-aliyun-ecs-metadata-token-ttl-seconds'] = $this->metadataTokenDuration;
+        $options['headers'][Config::ECS_METADATA_HEADER_PREFIX . 'ecs-metadata-token-ttl-seconds'] = $this->metadataTokenDuration;
 
         $result = Request::createClient()->request('PUT', $url, $options);
 
diff --git a/src/Providers/EnvironmentVariableCredentialsProvider.php b/src/Providers/EnvironmentVariableCredentialsProvider.php
index b6dd579..3873e05 100644
--- a/src/Providers/EnvironmentVariableCredentialsProvider.php
+++ b/src/Providers/EnvironmentVariableCredentialsProvider.php
@@ -4,13 +4,8 @@
 
 use AlibabaCloud\Credentials\Utils\Helper;
 use InvalidArgumentException;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class EnvironmentVariableCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class EnvironmentVariableCredentialsProvider implements CredentialsProvider
 {
     /**
@@ -26,20 +21,20 @@ public function __construct() {}
      */
     public function getCredentials()
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
-            $accessKeyId = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_ID')) {
+            $accessKeyId = Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_ID');
         } else {
-            throw new InvalidArgumentException('Access key ID must be specified via environment variable (ALIBABA_CLOUD_ACCESS_KEY_ID)');
+            throw new InvalidArgumentException('Access key ID must be specified via environment variable (' . Config::ENV_PREFIX . 'ACCESS_KEY_ID)');
         }
 
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
-            $accessKeySecret = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET')) {
+            $accessKeySecret = Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET');
         } else {
-            throw new InvalidArgumentException('Access key Secret must be specified via environment variable (ALIBABA_CLOUD_ACCESS_KEY_SECRET)');
+            throw new InvalidArgumentException('Access key Secret must be specified via environment variable (' . Config::ENV_PREFIX . 'ACCESS_KEY_SECRET)');
         }
 
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_SECURITY_TOKEN')) {
-            $securityToken = Helper::env('ALIBABA_CLOUD_SECURITY_TOKEN');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'SECURITY_TOKEN')) {
+            $securityToken = Helper::env(Config::ENV_PREFIX . 'SECURITY_TOKEN');
             return new Credentials([
                 'accessKeyId' => $accessKeyId,
                 'accessKeySecret' => $accessKeySecret,
diff --git a/src/Providers/OIDCRoleArnCredentialsProvider.php b/src/Providers/OIDCRoleArnCredentialsProvider.php
index 18fe6ec..378d2d9 100644
--- a/src/Providers/OIDCRoleArnCredentialsProvider.php
+++ b/src/Providers/OIDCRoleArnCredentialsProvider.php
@@ -11,13 +11,8 @@
 use RuntimeException;
 use Exception;
 use AlibabaCloud\Credentials\Credential\RefreshResult;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class OIDCRoleArnCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class OIDCRoleArnCredentialsProvider extends SessionCredentialsProvider
 {
 
@@ -88,8 +83,8 @@ public function __construct(array $params = [], array $options = [])
 
     private function filterRoleArn(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')) {
-            $this->roleArn = Helper::env('ALIBABA_CLOUD_ROLE_ARN');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ROLE_ARN')) {
+            $this->roleArn = Helper::env(Config::ENV_PREFIX . 'ROLE_ARN');
         }
 
         if (isset($params['roleArn'])) {
@@ -101,8 +96,8 @@ private function filterRoleArn(array $params)
 
     private function filterOIDCProviderArn(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_PROVIDER_ARN')) {
-            $this->oidcProviderArn = Helper::env('ALIBABA_CLOUD_OIDC_PROVIDER_ARN');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'OIDC_PROVIDER_ARN')) {
+            $this->oidcProviderArn = Helper::env(Config::ENV_PREFIX . 'OIDC_PROVIDER_ARN');
         }
 
         if (isset($params['oidcProviderArn'])) {
@@ -114,8 +109,8 @@ private function filterOIDCProviderArn(array $params)
 
     private function filterOIDCTokenFilePath(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_TOKEN_FILE')) {
-            $this->oidcTokenFilePath = Helper::env('ALIBABA_CLOUD_OIDC_TOKEN_FILE');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'OIDC_TOKEN_FILE')) {
+            $this->oidcTokenFilePath = Helper::env(Config::ENV_PREFIX . 'OIDC_TOKEN_FILE');
         }
 
         if (isset($params['oidcTokenFilePath'])) {
@@ -127,8 +122,8 @@ private function filterOIDCTokenFilePath(array $params)
 
     private function filterRoleSessionName(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_SESSION_NAME')) {
-            $this->roleSessionName = Helper::env('ALIBABA_CLOUD_ROLE_SESSION_NAME');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ROLE_SESSION_NAME')) {
+            $this->roleSessionName = Helper::env(Config::ENV_PREFIX . 'ROLE_SESSION_NAME');
         }
 
         if (isset($params['roleSessionName'])) {
@@ -168,15 +163,15 @@ private function filterPolicy(array $params)
     private function filterSTSEndpoint(array $params)
     {
         $prefix = 'sts';
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED') || (isset($params['enableVpc']) && $params['enableVpc'] === true)) {
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'VPC_ENDPOINT_ENABLED') || (isset($params['enableVpc']) && $params['enableVpc'] === true)) {
             $prefix = 'sts-vpc';
         }
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_STS_REGION')) {
-            $this->stsEndpoint = $prefix . '.' . Helper::env('ALIBABA_CLOUD_STS_REGION') . '.aliyuncs.com';
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'STS_REGION')) {
+            $this->stsEndpoint = $prefix . '.' . Helper::env(Config::ENV_PREFIX . 'STS_REGION') . '.' . Config::ENDPOINT_SUFFIX;
         }
 
         if (isset($params['stsRegionId'])) {
-            $this->stsEndpoint = $prefix . '.' . $params['stsRegionId'] . '.aliyuncs.com';
+            $this->stsEndpoint = $prefix . '.' . $params['stsRegionId'] . '.' . Config::ENDPOINT_SUFFIX;
         }
 
         if (isset($params['stsEndpoint'])) {
@@ -184,7 +179,7 @@ private function filterSTSEndpoint(array $params)
         }
 
         if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
-            $this->stsEndpoint = 'sts.aliyuncs.com';
+            $this->stsEndpoint = Config::STS_DEFAULT_ENDPOINT;
         }
     }
 
diff --git a/src/Providers/ProfileCredentialsProvider.php b/src/Providers/ProfileCredentialsProvider.php
index ab07efe..8c2e147 100644
--- a/src/Providers/ProfileCredentialsProvider.php
+++ b/src/Providers/ProfileCredentialsProvider.php
@@ -4,13 +4,8 @@
 
 use AlibabaCloud\Credentials\Utils\Helper;
 use RuntimeException;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class ProfileCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class ProfileCredentialsProvider implements CredentialsProvider
 {
 
@@ -43,8 +38,8 @@ public function __construct(array $params = [])
 
     private function filterProfileName(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_PROFILE')) {
-            $this->profileName = Helper::env('ALIBABA_CLOUD_PROFILE');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX + 'PROFILE')) {
+            $this->profileName = Helper::env(Config::ENV_PREFIX + 'PROFILE');
         }
 
         if (isset($params['profileName'])) {
@@ -58,7 +53,7 @@ private function filterProfileName(array $params)
 
     private function filterProfileFile()
     {
-        $this->profileFile = Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_FILE');
+        $this->profileFile = Helper::envNotEmpty(Config::ENV_PREFIX + 'CREDENTIALS_FILE');
 
         if (!$this->profileFile) {
             $this->profileFile = self::getDefaultFile();
@@ -173,7 +168,7 @@ private function getDefaultFile()
     {
         return Helper::getHomeDirectory() .
             DIRECTORY_SEPARATOR .
-            '.alibabacloud' .
+            Config::CREDENTIAL_FILE_PATH .
             DIRECTORY_SEPARATOR .
             'credentials';
     }
diff --git a/src/Providers/RamRoleArnCredentialsProvider.php b/src/Providers/RamRoleArnCredentialsProvider.php
index b69f6c5..aba4a09 100644
--- a/src/Providers/RamRoleArnCredentialsProvider.php
+++ b/src/Providers/RamRoleArnCredentialsProvider.php
@@ -10,13 +10,8 @@
 use InvalidArgumentException;
 use RuntimeException;
 use AlibabaCloud\Credentials\Credential\RefreshResult;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class RamRoleArnCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class RamRoleArnCredentialsProvider extends SessionCredentialsProvider
 {
 
@@ -87,8 +82,8 @@ public function __construct(array $params = [], array $options = [])
 
     private function filterRoleArn(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')) {
-            $this->roleArn = Helper::env('ALIBABA_CLOUD_ROLE_ARN');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX + 'ROLE_ARN')) {
+            $this->roleArn = Helper::env(Config::ENV_PREFIX + 'ROLE_ARN');
         }
 
         if (isset($params['roleArn'])) {
@@ -100,8 +95,8 @@ private function filterRoleArn(array $params)
 
     private function filterRoleSessionName(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_SESSION_NAME')) {
-            $this->roleSessionName = Helper::env('ALIBABA_CLOUD_ROLE_SESSION_NAME');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX + 'ROLE_SESSION_NAME')) {
+            $this->roleSessionName = Helper::env(Config::ENV_PREFIX + 'ROLE_SESSION_NAME');
         }
 
         if (isset($params['roleSessionName'])) {
@@ -150,15 +145,15 @@ private function filterExternalId(array $params)
     private function filterSTSEndpoint(array $params)
     {
         $prefix = 'sts';
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED') || (isset($params['enableVpc']) && $params['enableVpc'] === true)) {
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'VPC_ENDPOINT_ENABLED') || (isset($params['enableVpc']) && $params['enableVpc'] === true)) {
             $prefix = 'sts-vpc';
         }
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_STS_REGION')) {
-            $this->stsEndpoint = $prefix . '.' . Helper::env('ALIBABA_CLOUD_STS_REGION') . '.aliyuncs.com';
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'STS_REGION')) {
+            $this->stsEndpoint = $prefix . '.' . Helper::env(Config::ENV_PREFIX . 'STS_REGION') . '.' . Config::ENDPOINT_SUFFIX;
         }
 
         if (isset($params['stsRegionId'])) {
-            $this->stsEndpoint = $prefix . '.' . $params['stsRegionId'] . '.aliyuncs.com';
+            $this->stsEndpoint = $prefix . '.' . $params['stsRegionId'] . '.' . Config::ENDPOINT_SUFFIX;
         }
 
         if (isset($params['stsEndpoint'])) {
@@ -166,7 +161,7 @@ private function filterSTSEndpoint(array $params)
         }
 
         if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
-            $this->stsEndpoint = 'sts.aliyuncs.com';
+            $this->stsEndpoint = Config::STS_DEFAULT_ENDPOINT;
         }
     }
 
@@ -215,13 +210,12 @@ public function refreshCredentials()
         $options['read_timeout'] = $this->readTimeout;
         $options['connect_timeout'] = $this->connectTimeout;
 
-        $options['query']['Action'] = 'AssumeRole';
-        $options['query']['Version'] = '2015-04-01';
-        $options['query']['Format'] = 'JSON';
-        $options['query']['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
-        $options['query']['SignatureMethod'] = 'HMAC-SHA1';
-        $options['query']['SignatureVersion'] = '1.0';
-        $options['query']['SignatureNonce'] = Request::uuid(json_encode($options['query']));
+        $date = gmdate('Y-m-d\TH:i:s\Z');
+        $options['headers']['x-acs-action'] = 'AssumeRole';
+        $options['headers']['x-acs-action'] = '2015-04-01';
+        $options['query']['accept'] = 'application/json';
+        $options['headers']['x-acs-date'] = $date;
+        
         $options['query']['RoleArn'] = $this->roleArn;
         $options['query']['RoleSessionName'] = $this->roleSessionName;
         $options['query']['DurationSeconds'] = (string) $this->durationSeconds;
@@ -232,15 +226,23 @@ public function refreshCredentials()
             $options['query']['ExternalId'] = $this->externalId;
         }
 
+        $options['headers']['x-acs-signature-nonce'] = Request::uuid(json_encode($options['query']));
+
         $sessionCredentials = $this->credentialsProvider->getCredentials();
-        $options['query']['AccessKeyId'] = $sessionCredentials->getAccessKeyId();
         if (!is_null($sessionCredentials->getSecurityToken())) {
-            $options['query']['SecurityToken'] = $sessionCredentials->getSecurityToken();
+            $options['headers']['x-acs-accesskey-id'] = $sessionCredentials->getAccessKeyId();
+            $options['headers']['x-acs-security-token'] = $sessionCredentials->getSecurityToken();
         }
-        $options['query']['Signature'] = Request::shaHmac1sign(
-            Request::signString('GET', $options['query']),
-            $sessionCredentials->getAccessKeySecret() . '&'
+        
+        $dateNew = substr($date, 0, 11);
+        $dateNew = str_replace(
+            "-",
+            "",
+            $dateNew
         );
+        $region = $this->getRegion($request->productId, $config->endpoint, $config->regionId);
+        $signingkey = $this->getSigningkey($signatureAlgorithm, $accessKeySecret, $request->productId, $region, $dateNew);
+        $request->headers["Authorization"] = $this->getAuthorization($request->pathname, $request->method, $request->query, $request->headers, $signatureAlgorithm, $hashedRequestPayload, $accessKeyId, $signingkey, $request->productId, $region, $dateNew);
 
         $url = (new Uri())->withScheme('https')->withHost($this->stsEndpoint);
 
diff --git a/src/Providers/RsaKeyPairCredentialsProvider.php b/src/Providers/RsaKeyPairCredentialsProvider.php
deleted file mode 100644
index 8c85db6..0000000
--- a/src/Providers/RsaKeyPairCredentialsProvider.php
+++ /dev/null
@@ -1,200 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Providers;
-
-use AlibabaCloud\Credentials\Utils\Helper;
-use AlibabaCloud\Credentials\Utils\Filter;
-use AlibabaCloud\Credentials\Request\Request;
-use GuzzleHttp\Psr7\Uri;
-use GuzzleHttp\Exception\GuzzleException;
-use AlibabaCloud\Credentials\Credential\RefreshResult;
-
-use InvalidArgumentException;
-use RuntimeException;
-use Exception;
-
-/**
- * @internal This class is intended for internal use within the package.
- * Class RsaKeyPairCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
-class RsaKeyPairCredentialsProvider extends SessionCredentialsProvider
-{
-
-    /**
-     * @var string
-     */
-    private $publicKeyId;
-
-    /**
-     * @var string
-     */
-    private $privateKey;
-
-    /**
-     * @description role session expiration
-     * @example 3600
-     * @var int
-     */
-    private $durationSeconds = 3600;
-
-    /**
-     * @var string
-     */
-    private $stsEndpoint;
-
-    /**
-     * @var int
-     */
-    private $connectTimeout = 5;
-
-    /**
-     * @var int
-     */
-    private $readTimeout = 5;
-
-    /**
-     * RsaKeyPairCredentialsProvider constructor.
-     *
-     * @param array $params
-     * @param array $options
-     */
-    public function __construct(array $params = [], array $options = [])
-    {
-        $this->filterOptions($options);
-        $this->filterDurationSeconds($params);
-        $this->filterSTSEndpoint($params);
-        $this->publicKeyId = isset($params['publicKeyId']) ? $params['publicKeyId'] : null;
-        $privateKeyFile = isset($params['privateKeyFile']) ? $params['privateKeyFile'] : null;
-        Filter::publicKeyId($this->publicKeyId);
-        Filter::privateKeyFile($privateKeyFile);
-
-        try {
-            $this->privateKey = file_get_contents($privateKeyFile);
-        } catch (Exception $exception) {
-            throw new InvalidArgumentException($exception->getMessage());
-        }
-    }
-
-    private function filterOptions(array $options)
-    {
-        if (isset($options['connectTimeout'])) {
-            $this->connectTimeout = $options['connectTimeout'];
-        }
-
-        if (isset($options['readTimeout'])) {
-            $this->readTimeout = $options['readTimeout'];
-        }
-
-        Filter::timeout($this->connectTimeout, $this->readTimeout);
-    }
-
-    private function filterDurationSeconds(array $params)
-    {
-        if (isset($params['durationSeconds'])) {
-            if (is_int($params['durationSeconds'])) {
-                $this->durationSeconds = $params['durationSeconds'];
-            }
-        }
-        if ($this->durationSeconds < 900) {
-            throw new InvalidArgumentException('Role session expiration should be in the range of 900s - max session duration');
-        }
-    }
-
-    private function filterSTSEndpoint(array $params)
-    {
-        if (isset($params['stsEndpoint'])) {
-            $this->stsEndpoint = $params['stsEndpoint'];
-        }
-
-        if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
-            $this->stsEndpoint = 'sts.ap-northeast-1.aliyuncs.com';
-        }
-    }
-
-
-    /**
-     * Get credentials by request.
-     *
-     * @return RefreshResult
-     * @throws RuntimeException
-     * @throws GuzzleException
-     */
-    public function refreshCredentials()
-    {
-        $options = Request::commonOptions();
-        $options['read_timeout'] = $this->readTimeout;
-        $options['connect_timeout'] = $this->connectTimeout;
-
-        $options['query']['Action'] = 'GenerateSessionAccessKey';
-        $options['query']['Version'] = '2015-04-01';
-        $options['query']['Format'] = 'JSON';
-        $options['query']['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
-        $options['query']['SignatureMethod'] = 'SHA256withRSA';
-        $options['query']['SignatureType'] = 'PRIVATEKEY';
-        $options['query']['SignatureVersion'] = '1.0';
-        $options['query']['SignatureNonce'] = Request::uuid(json_encode($options['query']));
-        $options['query']['DurationSeconds'] = (string) $this->durationSeconds;
-        $options['query']['AccessKeyId'] = $this->publicKeyId;
-        $options['query']['Signature'] = Request::shaHmac256WithRsasign(
-            Request::signString('GET', $options['query']),
-            $this->privateKey
-        );
-
-        $url = (new Uri())->withScheme('https')->withHost($this->stsEndpoint);
-
-        $result = Request::createClient()->request('GET', $url, $options);
-
-        if ($result->getStatusCode() !== 200) {
-            throw new RuntimeException('Error refreshing credentials from RsaKeyPair, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
-        }
-
-        $json = $result->toArray();
-
-        if (!isset($json['SessionAccessKey']['SessionAccessKeyId']) || !isset($json['SessionAccessKey']['SessionAccessKeySecret'])) {
-            throw new RuntimeException('Error retrieving credentials from RsaKeyPair result:' . $result->toJson());
-        }
-
-        $credentials = [];
-        $credentials['AccessKeyId'] = $json['SessionAccessKey']['SessionAccessKeyId'];
-        $credentials['AccessKeySecret'] = $json['SessionAccessKey']['SessionAccessKeySecret'];
-        $credentials['Expiration'] = $json['SessionAccessKey']['Expiration'];
-        $credentials['SecurityToken'] = null;
-
-
-        return new RefreshResult(new Credentials([
-            'accessKeyId' => $credentials['AccessKeyId'],
-            'accessKeySecret' => $credentials['AccessKeySecret'],
-            'securityToken' => $credentials['SecurityToken'],
-            'expiration' => \strtotime($credentials['Expiration']),
-            'providerName' => $this->getProviderName(),
-        ]), $this->getStaleTime(strtotime($credentials['Expiration'])));
-    }
-
-    public function key()
-    {
-        return 'rsa_key_pair#publicKeyId#' . $this->publicKeyId;
-    }
-
-    public function getProviderName()
-    {
-        return 'rsa_key_pair';
-    }
-
-    /**
-     * @return string
-     */
-    public function getPublicKeyId()
-    {
-        return $this->publicKeyId;
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getPrivateKey()
-    {
-        return $this->privateKey;
-    }
-}
diff --git a/src/Providers/StaticAKCredentialsProvider.php b/src/Providers/StaticAKCredentialsProvider.php
index 7e73cd0..c821642 100644
--- a/src/Providers/StaticAKCredentialsProvider.php
+++ b/src/Providers/StaticAKCredentialsProvider.php
@@ -4,13 +4,8 @@
 
 use AlibabaCloud\Credentials\Utils\Helper;
 use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class StaticAKCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class StaticAKCredentialsProvider implements CredentialsProvider
 {
 
@@ -36,12 +31,12 @@ public function __construct(array $params = [])
 
     private function filterAK(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
-            $this->accessKeyId =  Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_ID')) {
+            $this->accessKeyId =  Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_ID');
         }
 
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
-            $this->accessKeySecret =  Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET')) {
+            $this->accessKeySecret =  Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET');
         }
 
         if (isset($params['accessKeyId'])) {
diff --git a/src/Providers/StaticSTSCredentialsProvider.php b/src/Providers/StaticSTSCredentialsProvider.php
index 957b25d..4205bc3 100644
--- a/src/Providers/StaticSTSCredentialsProvider.php
+++ b/src/Providers/StaticSTSCredentialsProvider.php
@@ -4,13 +4,8 @@
 
 use AlibabaCloud\Credentials\Utils\Helper;
 use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class StaticSTSCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class StaticSTSCredentialsProvider implements CredentialsProvider
 {
 
@@ -41,16 +36,16 @@ public function __construct(array $params = [])
 
     private function filterSTS(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
-            $this->accessKeyId = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_ID')) {
+            $this->accessKeyId = Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_ID');
         }
 
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
-            $this->accessKeySecret = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET')) {
+            $this->accessKeySecret = Helper::env(Config::ENV_PREFIX . 'ACCESS_KEY_SECRET');
         }
 
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_SECURITY_TOKEN')) {
-            $this->securityToken = Helper::env('ALIBABA_CLOUD_SECURITY_TOKEN');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'SECURITY_TOKEN')) {
+            $this->securityToken = Helper::env(Config::ENV_PREFIX . 'SECURITY_TOKEN');
         }
 
         if (isset($params['accessKeyId'])) {
diff --git a/src/Providers/URLCredentialsProvider.php b/src/Providers/URLCredentialsProvider.php
index 617c19f..43c0a58 100644
--- a/src/Providers/URLCredentialsProvider.php
+++ b/src/Providers/URLCredentialsProvider.php
@@ -9,13 +9,8 @@
 use InvalidArgumentException;
 use RuntimeException;
 use AlibabaCloud\Credentials\Credential\RefreshResult;
+use AlibabaCloud\Configure\Config;
 
-/**
- * @internal This class is intended for internal use within the package. 
- * Class URLCredentialsProvider
- *
- * @package AlibabaCloud\Credentials\Providers
- */
 class URLCredentialsProvider extends SessionCredentialsProvider
 {
 
@@ -61,12 +56,12 @@ private function filterOptions(array $options)
 
     private function filterCredentialsURI(array $params)
     {
-        if (Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_URI')) {
-            $this->credentialsURI = Helper::env('ALIBABA_CLOUD_CREDENTIALS_URI');
+        if (Helper::envNotEmpty(Config::ENV_PREFIX . 'CREDENTIALS_URI')) {
+            $this->credentialsURI = Helper::env(Config::ENV_PREFIX . 'CREDENTIALS_URI');
         }
 
-        if (isset($params['credentialsURI'])) {
-            $this->credentialsURI = $params['credentialsURI'];
+        if (isset($params['credentialsUri'])) {
+            $this->credentialsURI = $params['credentialsUri'];
         }
 
         Filter::credentialsURI($this->credentialsURI);
diff --git a/src/RamRoleArnCredential.php b/src/RamRoleArnCredential.php
deleted file mode 100644
index ed75640..0000000
--- a/src/RamRoleArnCredential.php
+++ /dev/null
@@ -1,242 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials;
-
-use AlibabaCloud\Credentials\Providers\RamRoleArnCredentialsProvider;
-use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use AlibabaCloud\Credentials\Utils\Filter;
-use Exception;
-use GuzzleHttp\Exception\GuzzleException;
-use InvalidArgumentException;
-
-/**
- * @deprecated
- * Use the AssumeRole of the RAM account to complete  the authentication.
- */
-class RamRoleArnCredential implements CredentialsInterface
-{
-
-    /**
-     * @var string
-     */
-    private $accessKeyId;
-
-    /**
-     * @var string
-     */
-    private $accessKeySecret;
-
-    /**
-     * @var string
-     */
-    private $roleArn;
-
-    /**
-     * @var string
-     */
-    private $roleSessionName;
-
-    /**
-     * @var string
-     */
-    private $policy;
-
-    /**
-     * @var array
-     */
-    private $config;
-
-    /**
-     * RamRoleArnCredential constructor.
-     *
-     * @param array $credential
-     * @param array $config
-     */
-    public function __construct(array $credential = [], array $config = [])
-    {
-        $this->filterParameters($credential);
-        $this->filterPolicy($credential);
-
-        Filter::accessKey($credential['access_key_id'], $credential['access_key_secret']);
-
-        $this->config = $config;
-        $this->accessKeyId = $credential['access_key_id'];
-        $this->accessKeySecret = $credential['access_key_secret'];
-        $this->roleArn = $credential['role_arn'];
-        $this->roleSessionName = $credential['role_session_name'];
-    }
-
-    /**
-     * @param array $credential
-     */
-    private function filterParameters(array $credential)
-    {
-        if (!isset($credential['access_key_id'])) {
-            throw new InvalidArgumentException('Missing required access_key_id option in config for ram_role_arn');
-        }
-
-        if (!isset($credential['access_key_secret'])) {
-            throw new InvalidArgumentException('Missing required access_key_secret option in config for ram_role_arn');
-        }
-
-        if (!isset($credential['role_arn'])) {
-            throw new InvalidArgumentException('Missing required role_arn option in config for ram_role_arn');
-        }
-
-        if (!isset($credential['role_session_name'])) {
-            throw new InvalidArgumentException('Missing required role_session_name option in config for ram_role_arn');
-        }
-    }
-
-    /**
-     * @param array $credential
-     */
-    private function filterPolicy(array $credential)
-    {
-        if (isset($credential['policy'])) {
-            if (is_string($credential['policy'])) {
-                $this->policy = $credential['policy'];
-            }
-
-            if (is_array($credential['policy'])) {
-                $this->policy = json_encode($credential['policy']);
-            }
-        }
-    }
-
-    /**
-     * @return array
-     */
-    public function getConfig()
-    {
-        return $this->config;
-    }
-
-    /**
-     * @return string
-     */
-    public function getRoleArn()
-    {
-        return $this->roleArn;
-    }
-
-    /**
-     * @return string
-     */
-    public function getRoleSessionName()
-    {
-        return $this->roleSessionName;
-    }
-
-    /**
-     * @return string
-     */
-    public function getPolicy()
-    {
-        return $this->policy;
-    }
-
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return "$this->accessKeyId#$this->accessKeySecret#$this->roleArn#$this->roleSessionName";
-    }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return new ShaHmac1Signature();
-    }
-
-    /**
-     * @return string
-     */
-    public function getOriginalAccessKeyId()
-    {
-        return $this->accessKeyId;
-    }
-
-    /**
-     * @return string
-     */
-    public function getOriginalAccessKeySecret()
-    {
-        return $this->accessKeySecret;
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeyId()
-    {
-        return $this->getSessionCredential()->getAccessKeyId();
-    }
-
-    /**
-     * @return AlibabaCloud\Credentials\Providers\Credentials
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    protected function getSessionCredential()
-    {
-        $params = [
-            'accessKeyId' => $this->accessKeyId,
-            'accessKeySecret' => $this->accessKeyId,
-            'roleArn' => $this->roleArn,
-            'roleSessionName' => $this->roleSessionName,
-            'policy' => $this->policy,
-        ];
-        return (new RamRoleArnCredentialsProvider($params))->getCredentials();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->getSessionCredential()->getAccessKeySecret();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getSecurityToken()
-    {
-        return $this->getSessionCredential()->getSecurityToken();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getExpiration()
-    {
-        return $this->getSessionCredential()->getExpiration();
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function getCredential()
-    {
-        $credentials = $this->getSessionCredential();
-        return new CredentialModel([
-            'accessKeyId' => $credentials->getAccessKeyId(),
-            'accessKeySecret' => $credentials->getAccessKeySecret(),
-            'securityToken' => $credentials->getSecurityToken(),
-            'type' => 'ram_role_arn',
-        ]);
-    }
-}
diff --git a/src/Request/Request.php b/src/Request/Request.php
index f0ba62f..80069ed 100644
--- a/src/Request/Request.php
+++ b/src/Request/Request.php
@@ -81,6 +81,168 @@ public static function signString($method, array $parameters)
         return $method . '&%2F&' . self::percentEncode(substr($canonicalized, 1));
     }
 
+    public function getAuthorization($pathname, $method, $query, $headers, $signatureAlgorithm, $payload, $ak, $signingkey, $product, $region, $date)
+    {
+        $signature = $this->getSignature($pathname, $method, $query, $headers, $signatureAlgorithm, $payload, $signingkey);
+        $signedHeaders = $this->getSignedHeaders($headers);
+        $signedHeadersStr = ArrayUtil::join($signedHeaders, ";");
+        return "" . $signatureAlgorithm . " Credential=" . $ak . "/" . $date . "/" . $region . "/" . $product . "/" . $this->_signPrefix . "_request,SignedHeaders=" . $signedHeadersStr . ",Signature=" . $signature . "";
+    }
+
+    /**
+     * @param string $pathname
+     * @param string $method
+     * @param string[] $query
+     * @param string[] $headers
+     * @param string $signatureAlgorithm
+     * @param string $payload
+     * @param int[] $signingkey
+     * @return string
+     */
+    public function getSignature($pathname, $method, $query, $headers, $signatureAlgorithm, $payload, $signingkey)
+    {
+        $canonicalURI = "/";
+        if (!Utils::empty_($pathname)) {
+            $canonicalURI = $pathname;
+        }
+        $stringToSign = "";
+        $canonicalizedResource = $this->buildCanonicalizedResource($query);
+        $canonicalizedHeaders = $this->buildCanonicalizedHeaders($headers);
+        $signedHeaders = $this->getSignedHeaders($headers);
+        $signedHeadersStr = ArrayUtil::join($signedHeaders, ";");
+        $stringToSign = "" . $method . "\n" . $canonicalURI . "\n" . $canonicalizedResource . "\n" . $canonicalizedHeaders . "\n" . $signedHeadersStr . "\n" . $payload . "";
+        $hex = EncodeUtil::hexEncode(EncodeUtil::hash(Utils::toBytes($stringToSign), $signatureAlgorithm));
+        $stringToSign = "" . $signatureAlgorithm . "\n" . $hex . "";
+        $signature = Utils::toBytes("");
+        if (Utils::equalString($signatureAlgorithm, $this->_sha256)) {
+            $signature = SignatureUtil::HmacSHA256SignByBytes($stringToSign, $signingkey);
+        } else if (Utils::equalString($signatureAlgorithm, $this->_sm3)) {
+            $signature = SignatureUtil::HmacSM3SignByBytes($stringToSign, $signingkey);
+        }
+        return EncodeUtil::hexEncode($signature);
+    }
+
+    /**
+     * @param string $signatureAlgorithm
+     * @param string $secret
+     * @param string $product
+     * @param string $region
+     * @param string $date
+     * @return array
+     */
+    public function getSigningkey($signatureAlgorithm, $secret, $product, $region, $date)
+    {
+        $sc1 = "" . $this->_signPrefix . "" . $secret . "";
+        $sc2 = Utils::toBytes("");
+        if (Utils::equalString($signatureAlgorithm, $this->_sha256)) {
+            $sc2 = SignatureUtil::HmacSHA256Sign($date, $sc1);
+        } else if (Utils::equalString($signatureAlgorithm, $this->_sm3)) {
+            $sc2 = SignatureUtil::HmacSM3Sign($date, $sc1);
+        }
+        $sc3 = Utils::toBytes("");
+        if (Utils::equalString($signatureAlgorithm, $this->_sha256)) {
+            $sc3 = SignatureUtil::HmacSHA256SignByBytes($region, $sc2);
+        } else if (Utils::equalString($signatureAlgorithm, $this->_sm3)) {
+            $sc3 = SignatureUtil::HmacSM3SignByBytes($region, $sc2);
+        }
+        $sc4 = Utils::toBytes("");
+        if (Utils::equalString($signatureAlgorithm, $this->_sha256)) {
+            $sc4 = SignatureUtil::HmacSHA256SignByBytes($product, $sc3);
+        } else if (Utils::equalString($signatureAlgorithm, $this->_sm3)) {
+            $sc4 = SignatureUtil::HmacSM3SignByBytes($product, $sc3);
+        }
+        $hmac = Utils::toBytes("");
+        if (Utils::equalString($signatureAlgorithm, $this->_sha256)) {
+            $hmac = SignatureUtil::HmacSHA256SignByBytes("" . $this->_signPrefix . "_request", $sc4);
+        } else if (Utils::equalString($signatureAlgorithm, $this->_sm3)) {
+            $hmac = SignatureUtil::HmacSM3SignByBytes("" . $this->_signPrefix . "_request", $sc4);
+        }
+        return $hmac;
+    }
+
+    /**
+     * @param string $product
+     * @param string $endpoint
+     * @param string $regionId
+     * @return string
+     */
+    public function getRegion($product, $endpoint, $regionId)
+    {
+        if (!Utils::empty_($regionId)) {
+            return $regionId;
+        }
+        $region = "center";
+        if (Utils::empty_($product) || Utils::empty_($endpoint)) {
+            return $region;
+        }
+        $strs = StringUtil::split($endpoint, ":", null);
+        $withoutPort = @$strs[0];
+        $preRegion = StringUtil::replace($withoutPort, "." . $this->_endpointSuffix . "", "", null);
+        $nodes = StringUtil::split($preRegion, ".", null);
+        if (Utils::equalNumber(ArrayUtil::size($nodes), 2)) {
+            $region = @$nodes[1];
+        }
+        return $region;
+    }
+
+    /**
+     * @param string[] $query
+     * @return string
+     */
+    public function buildCanonicalizedResource($query)
+    {
+        $canonicalizedResource = "";
+        if (!Utils::isUnset($query)) {
+            $queryArray = MapUtil::keySet($query);
+            $sortedQueryArray = ArrayUtil::ascSort($queryArray);
+            $separator = "";
+            foreach ($sortedQueryArray as $key) {
+                $canonicalizedResource = "" . $canonicalizedResource . "" . $separator . "" . EncodeUtil::percentEncode($key) . "";
+                if (!Utils::empty_(@$query[$key])) {
+                    $canonicalizedResource = "" . $canonicalizedResource . "=" . EncodeUtil::percentEncode(@$query[$key]) . "";
+                }
+                $separator = "&";
+            }
+        }
+        return $canonicalizedResource;
+    }
+
+    /**
+     * @param string[] $headers
+     * @return string
+     */
+    public function buildCanonicalizedHeaders($headers)
+    {
+        $canonicalizedHeaders = "";
+        $sortedHeaders = $this->getSignedHeaders($headers);
+        foreach ($sortedHeaders as $header) {
+            $canonicalizedHeaders = "" . $canonicalizedHeaders . "" . $header . ":" . StringUtil::trim(@$headers[$header]) . "\n";
+        }
+        return $canonicalizedHeaders;
+    }
+
+    /**
+     * @param string[] $headers
+     * @return array
+     */
+    public function getSignedHeaders($headers)
+    {
+        $headersArray = MapUtil::keySet($headers);
+        $sortedHeadersArray = ArrayUtil::ascSort($headersArray);
+        $tmp = "";
+        $separator = "";
+        foreach ($sortedHeadersArray as $key) {
+            $lowerKey = StringUtil::toLower($key);
+            if (StringUtil::hasPrefix($lowerKey, "x-acs-") || StringUtil::equals($lowerKey, "host") || StringUtil::equals($lowerKey, "content-type")) {
+                if (!StringUtil::contains($tmp, $lowerKey)) {
+                    $tmp = "" . $tmp . "" . $separator . "" . $lowerKey . "";
+                    $separator = ";";
+                }
+            }
+        }
+        return StringUtil::split($tmp, ";", null);
+    }
+
     /**
      * @param string $string
      * @param string $accessKeySecret
diff --git a/src/RsaKeyPairCredential.php b/src/RsaKeyPairCredential.php
deleted file mode 100644
index 12e719e..0000000
--- a/src/RsaKeyPairCredential.php
+++ /dev/null
@@ -1,185 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials;
-
-use AlibabaCloud\Credentials\Providers\RsaKeyPairCredentialsProvider;
-use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use AlibabaCloud\Credentials\Utils\Filter;
-use Exception;
-use GuzzleHttp\Exception\GuzzleException;
-use InvalidArgumentException;
-
-/**
- * @deprecated
- * Use the RSA key pair to complete the authentication (supported only on Japanese site)
- */
-class RsaKeyPairCredential implements CredentialsInterface
-{
-
-    /**
-     * @var string
-     */
-    private $publicKeyId;
-
-    /**
-     * @var string
-     */
-    private $privateKeyFile;
-
-    /**
-     * @var string
-     */
-    private $privateKey;
-
-    /**
-     * @var array
-     */
-    private $config;
-
-    /**
-     * RsaKeyPairCredential constructor.
-     *
-     * @param string $public_key_id
-     * @param string $private_key_file
-     * @param array  $config
-     */
-    public function __construct($public_key_id, $private_key_file, array $config = [])
-    {
-        Filter::publicKeyId($public_key_id);
-        Filter::privateKeyFile($private_key_file);
-
-        $this->publicKeyId = $public_key_id;
-        $this->privateKeyFile = $private_key_file;
-        $this->config = $config;
-        try {
-            $this->privateKey = file_get_contents($private_key_file);
-        } catch (Exception $exception) {
-            throw new InvalidArgumentException($exception->getMessage());
-        }
-    }
-
-    /**
-     * @return array
-     */
-    public function getConfig()
-    {
-        return $this->config;
-    }
-
-    /**
-     * @return string
-     */
-    public function getOriginalAccessKeyId()
-    {
-        return $this->getPublicKeyId();
-    }
-
-    /**
-     * @return string
-     */
-    public function getPublicKeyId()
-    {
-        return $this->publicKeyId;
-    }
-
-    /**
-     * @return string
-     */
-    public function getOriginalAccessKeySecret()
-    {
-        return $this->getPrivateKey();
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getPrivateKey()
-    {
-        return $this->privateKey;
-    }
-
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return "publicKeyId#$this->publicKeyId";
-    }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return new ShaHmac1Signature();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeyId()
-    {
-        return $this->getSessionCredential()->getAccessKeyId();
-    }
-
-    /**
-     * @return AlibabaCloud\Credentials\Providers\Credentials
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    protected function getSessionCredential()
-    {
-        $params = [
-            'publicKeyId' => $this->publicKeyId,
-            'privateKeyFile' => $this->privateKeyFile,
-        ];
-        return (new RsaKeyPairCredentialsProvider($params))->getCredentials();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->getSessionCredential()->getAccessKeySecret();
-    }
-
-    /**
-     * @return string
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getSecurityToken()
-    {
-        return $this->getSessionCredential()->getSecurityToken();
-    }
-
-    /**
-     * @return int
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function getExpiration()
-    {
-        return $this->getSessionCredential()->getExpiration();
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function getCredential()
-    {
-        $credentials = $this->getSessionCredential();
-        return new CredentialModel([
-            'accessKeyId' => $credentials->getAccessKeyId(),
-            'accessKeySecret' => $credentials->getAccessKeySecret(),
-            'securityToken' => $credentials->getSecurityToken(),
-            'type' => 'rsa_key_pair',
-        ]);
-    }
-}
diff --git a/src/Signature/BearerTokenSignature.php b/src/Signature/BearerTokenSignature.php
deleted file mode 100644
index 1d67a80..0000000
--- a/src/Signature/BearerTokenSignature.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Signature;
-
-/**
- * Class BearerTokenSignature
- *
- * @package AlibabaCloud\Credentials\Signature
- */
-class BearerTokenSignature implements SignatureInterface
-{
-
-    /**
-     * @return string
-     */
-    public function getMethod()
-    {
-        return '';
-    }
-
-    /**
-     * @return string
-     */
-    public function getType()
-    {
-        return 'BEARERTOKEN';
-    }
-
-    /**
-     * @return string
-     */
-    public function getVersion()
-    {
-        return '1.0';
-    }
-
-    /**
-     * @param string $string
-     * @param string $accessKeySecret
-     *
-     * @return string
-     */
-    public function sign($string, $accessKeySecret)
-    {
-        return '';
-    }
-}
diff --git a/src/Signature/ShaHmac1Signature.php b/src/Signature/ShaHmac1Signature.php
deleted file mode 100644
index 8c89e86..0000000
--- a/src/Signature/ShaHmac1Signature.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Signature;
-
-/**
- * Class ShaHmac1Signature
- *
- * @package AlibabaCloud\Credentials\Signature
- */
-class ShaHmac1Signature implements SignatureInterface
-{
-
-    /**
-     * @return string
-     */
-    public function getMethod()
-    {
-        return 'HMAC-SHA1';
-    }
-
-    /**
-     * @return string
-     */
-    public function getType()
-    {
-        return '';
-    }
-
-    /**
-     * @return string
-     */
-    public function getVersion()
-    {
-        return '1.0';
-    }
-
-    /**
-     * @param string $string
-     * @param string $accessKeySecret
-     *
-     * @return string
-     */
-    public function sign($string, $accessKeySecret)
-    {
-        return base64_encode(hash_hmac('sha1', $string, $accessKeySecret, true));
-    }
-}
diff --git a/src/Signature/ShaHmac256Signature.php b/src/Signature/ShaHmac256Signature.php
deleted file mode 100644
index fc5377c..0000000
--- a/src/Signature/ShaHmac256Signature.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Signature;
-
-/**
- * Class ShaHmac256Signature
- *
- * @package AlibabaCloud\Credentials\Signature
- */
-class ShaHmac256Signature implements SignatureInterface
-{
-
-    /**
-     * @return string
-     */
-    public function getMethod()
-    {
-        return 'HMAC-SHA256';
-    }
-
-    /**
-     * @return string
-     */
-    public function getType()
-    {
-        return '';
-    }
-
-    /**
-     * @return string
-     */
-    public function getVersion()
-    {
-        return '1.0';
-    }
-
-    /**
-     * @param string $string
-     * @param string $accessKeySecret
-     *
-     * @return string
-     */
-    public function sign($string, $accessKeySecret)
-    {
-        return base64_encode(hash_hmac('sha256', $string, $accessKeySecret, true));
-    }
-}
diff --git a/src/Signature/ShaHmac256WithRsaSignature.php b/src/Signature/ShaHmac256WithRsaSignature.php
deleted file mode 100644
index ff1e835..0000000
--- a/src/Signature/ShaHmac256WithRsaSignature.php
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Signature;
-
-use Exception;
-use InvalidArgumentException;
-
-/**
- * Class ShaHmac256WithRsaSignature
- *
- * @package AlibabaCloud\Credentials\Signature
- */
-class ShaHmac256WithRsaSignature implements SignatureInterface
-{
-
-    /**
-     * @return string
-     */
-    public function getMethod()
-    {
-        return 'SHA256withRSA';
-    }
-
-    /**
-     * @return string
-     */
-    public function getType()
-    {
-        return 'PRIVATEKEY';
-    }
-
-    /**
-     * @return string
-     */
-    public function getVersion()
-    {
-        return '1.0';
-    }
-
-    /**
-     * @param string $string
-     * @param string $privateKey
-     *
-     * @return string
-     */
-    public function sign($string, $privateKey)
-    {
-        $binarySignature = '';
-        try {
-            openssl_sign(
-                $string,
-                $binarySignature,
-                $privateKey,
-                \OPENSSL_ALGO_SHA256
-            );
-        } catch (Exception $exception) {
-            throw  new InvalidArgumentException(
-                $exception->getMessage()
-            );
-        }
-
-        return base64_encode($binarySignature);
-    }
-}
diff --git a/src/Signature/SignatureInterface.php b/src/Signature/SignatureInterface.php
deleted file mode 100644
index 9dfb73b..0000000
--- a/src/Signature/SignatureInterface.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Signature;
-
-/**
- * Interface SignatureInterface
- *
- * @package AlibabaCloud\Credentials\Signature
- */
-interface SignatureInterface
-{
-    /**
-     * @return string
-     */
-    public function getMethod();
-
-    /**
-     * @return string
-     */
-    public function getVersion();
-
-    /**
-     * @param string $string
-     * @param string $accessKeySecret
-     *
-     * @return string
-     */
-    public function sign($string, $accessKeySecret);
-
-    /**
-     * @return string
-     */
-    public function getType();
-}
diff --git a/src/StsCredential.php b/src/StsCredential.php
deleted file mode 100644
index 709a8ee..0000000
--- a/src/StsCredential.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials;
-
-use AlibabaCloud\Credentials\Utils\Filter;
-use AlibabaCloud\Credentials\Credential\CredentialModel;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-
-/**
- * @deprecated
- * Use the STS Token to complete the authentication.
- */
-class StsCredential implements CredentialsInterface
-{
-
-    /**
-     * @var string
-     */
-    private $accessKeyId;
-
-    /**
-     * @var string
-     */
-    private $accessKeySecret;
-
-    /**
-     * @var string
-     */
-    private $securityToken;
-
-    /**
-     * @var int
-     */
-    private $expiration;
-
-    /**
-     * StsCredential constructor.
-     *
-     * @param string $access_key_id     Access key ID
-     * @param string $access_key_secret Access Key Secret
-     * @param int    $expiration
-     * @param string $security_token    Security Token
-     */
-    public function __construct($access_key_id, $access_key_secret, $expiration, $security_token = '')
-    {
-        Filter::accessKey($access_key_id, $access_key_secret);
-        Filter::expiration($expiration);
-        $this->accessKeyId = $access_key_id;
-        $this->accessKeySecret = $access_key_secret;
-        $this->expiration = $expiration;
-        $this->securityToken = $security_token;
-    }
-
-    /**
-     * @return int
-     */
-    public function getExpiration()
-    {
-        return $this->expiration;
-    }
-
-    /**
-     * @return string
-     */
-    public function getAccessKeyId()
-    {
-        return $this->accessKeyId;
-    }
-
-    /**
-     * @return string
-     */
-    public function getAccessKeySecret()
-    {
-        return $this->accessKeySecret;
-    }
-
-    /**
-     * @return string
-     */
-    public function getSecurityToken()
-    {
-        return $this->securityToken;
-    }
-
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return "$this->accessKeyId#$this->accessKeySecret#$this->securityToken";
-    }
-
-    /**
-     * @return ShaHmac1Signature
-     */
-    public function getSignature()
-    {
-        return new ShaHmac1Signature();
-    }
-
-    /**
-     * @inheritDoc
-     */
-    public function getCredential()
-    {
-        return new CredentialModel([
-            'accessKeyId' => $this->accessKeyId,
-            'accessKeySecret' => $this->accessKeySecret,
-            'securityToken' => $this->securityToken,
-            'type' => 'sts',
-        ]);
-    }
-
-}
diff --git a/src/Utils/Filter.php b/src/Utils/Filter.php
index 959fd8f..f1c44c6 100644
--- a/src/Utils/Filter.php
+++ b/src/Utils/Filter.php
@@ -4,11 +4,7 @@
 
 use InvalidArgumentException;
 
-/**
- * Class Filter
- *
- * @package AlibabaCloud\Credentials\Utils
- */
+
 class Filter
 {
 
diff --git a/src/Utils/Helper.php b/src/Utils/Helper.php
index 1621fe1..37b831f 100644
--- a/src/Utils/Helper.php
+++ b/src/Utils/Helper.php
@@ -3,14 +3,11 @@
 namespace AlibabaCloud\Credentials\Utils;
 
 use AlibabaCloud\Credentials\Credential;
+use AlibabaCloud\Configure\Config;
 use org\bovigo\vfs\vfsStream;
 use Closure;
 
-/**
- * Class Helper
- *
- * @package AlibabaCloud\Credentials\Utils
- */
+
 class Helper
 {
     /**
@@ -232,7 +229,7 @@ public static function snakeToCamelCase($str)
      */
     public static function getUserAgent()
     {
-        return sprintf('AlibabaCloud (%s; %s) PHP/%s Credentials/%s TeaDSL/1', PHP_OS, \PHP_SAPI, PHP_VERSION, Credential::VERSION);
+        return sprintf(Config::KEY . ' (%s; %s) PHP/%s Credentials/%s TeaDSL/1', PHP_OS, \PHP_SAPI, PHP_VERSION, Credential::VERSION);
     }
 
     /**
diff --git a/src/Utils/MockTrait.php b/src/Utils/MockTrait.php
index cc07119..8006b7c 100644
--- a/src/Utils/MockTrait.php
+++ b/src/Utils/MockTrait.php
@@ -10,11 +10,7 @@
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 
-/**
- * Trait MockTrait
- *
- * @package AlibabaCloud\Credentials\Utils
- */
+
 trait MockTrait
 {
     /**
diff --git a/tests/Feature/CredentialTest.php b/tests/Feature/CredentialTest.php
index c6c81fa..b616e72 100644
--- a/tests/Feature/CredentialTest.php
+++ b/tests/Feature/CredentialTest.php
@@ -11,11 +11,6 @@
 use ReflectionException;
 use RuntimeException;
 
-/**
- * Class CredentialTest
- *
- * @package AlibabaCloud\Credentials\Tests\Feature
- */
 class CredentialTest extends TestCase
 {
 
diff --git a/tests/Mock/VirtualFile.php b/tests/Mock/VirtualFile.php
index 86e95da..617bc10 100644
--- a/tests/Mock/VirtualFile.php
+++ b/tests/Mock/VirtualFile.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Mock;
 
+use AlibabaCloud\Configure\Config;
 use org\bovigo\vfs\vfsStream;
 
 class VirtualFile
@@ -41,7 +42,7 @@ public function url($fileName = 'file')
     {
         return vfsStream::newFile($fileName)
                         ->withContent($this->content)
-                        ->at(vfsStream::setup('AlibabaCloud'))
+                        ->at(vfsStream::setup(Config::KEY))
                         ->url();
     }
 }
diff --git a/tests/Unit/AccessKeyCredentialTest.php b/tests/Unit/AccessKeyCredentialTest.php
deleted file mode 100644
index f5637d4..0000000
--- a/tests/Unit/AccessKeyCredentialTest.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\AccessKeyCredential;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use PHPUnit\Framework\TestCase;
-use InvalidArgumentException;
-
-/**
- * Class AccessKeyCredentialTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
-class AccessKeyCredentialTest extends TestCase
-{
-    public function testConstruct()
-    {
-        // Setup
-        $accessKeyId     = 'foo';
-        $accessKeySecret = 'bar';
-
-        // Test
-        $credential = new AccessKeyCredential($accessKeyId, $accessKeySecret);
-
-        // Assert
-        $this->assertEquals($accessKeyId, $credential->getAccessKeyId());
-        $this->assertEquals($accessKeySecret, $credential->getAccessKeySecret());
-        $this->assertEquals('', $credential->getSecurityToken());
-        $this->assertInstanceOf(ShaHmac1Signature::class, $credential->getSignature());
-        $this->assertEquals("$accessKeyId#$accessKeySecret", (string)$credential);
-
-        $credentialModel = $credential->getCredential();
-        $this->assertEquals($accessKeyId, $credentialModel->getAccessKeyId());
-        $this->assertEquals($accessKeySecret, $credentialModel->getAccessKeySecret());
-        $this->assertEquals('access_key', $credentialModel->getType());
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage accessKeyId cannot be empty
-     */
-    public function testAccessKeyIdEmpty()
-    {
-        // Setup
-        $accessKeyId     = '';
-        $accessKeySecret = 'bar';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeyId cannot be empty');
-
-        new AccessKeyCredential($accessKeyId, $accessKeySecret);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage accessKeyId must be a string
-     */
-    public function testAccessKeyIdFormat()
-    {
-        // Setup
-        $accessKeyId     = null;
-        $accessKeySecret = 'bar';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeyId must be a string');
-
-        new AccessKeyCredential($accessKeyId, $accessKeySecret);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage accessKeySecret cannot be empty
-     */
-    public function testAccessKeySecretEmpty()
-    {
-        // Setup
-        $accessKeyId     = 'foo';
-        $accessKeySecret = '';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeySecret cannot be empty');
-
-        // Test
-        new AccessKeyCredential($accessKeyId, $accessKeySecret);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage accessKeySecret must be a string
-     */
-    public function testAccessKeySecretFormat()
-    {
-        // Setup
-        $accessKeyId     = 'foo';
-        $accessKeySecret = null;
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeySecret must be a string');
-
-        // Test
-        new AccessKeyCredential($accessKeyId, $accessKeySecret);
-    }
-}
diff --git a/tests/Unit/BearerTokenCredentialTest.php b/tests/Unit/BearerTokenCredentialTest.php
index 34a5fc3..7bd69a0 100644
--- a/tests/Unit/BearerTokenCredentialTest.php
+++ b/tests/Unit/BearerTokenCredentialTest.php
@@ -8,11 +8,6 @@
 use Exception;
 use PHPUnit\Framework\TestCase;
 
-/**
- * Class BearerTokenCredentialTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
 class BearerTokenCredentialTest extends TestCase
 {
 
diff --git a/tests/Unit/ChainProviderTest.php b/tests/Unit/ChainProviderTest.php
deleted file mode 100644
index 673f285..0000000
--- a/tests/Unit/ChainProviderTest.php
+++ /dev/null
@@ -1,163 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\Utils\Helper;
-use AlibabaCloud\Credentials\Providers\ChainProvider;
-use AlibabaCloud\Credentials\Tests\Unit\Ini\VirtualAccessKeyCredential;
-use PHPUnit\Framework\TestCase;
-use RuntimeException;
-use InvalidArgumentException;
-
-/**
- * Class ChainProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
-class ChainProviderTest extends TestCase
-{
-
-    /**
-     * @before
-     */
-    protected function initialize()
-    {
-        parent::setUp();
-        putenv('ALIBABA_CLOUD_ACCESS_KEY_ID=foo');
-        putenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET=bar');
-    }
-
-    /**
-     * @after
-     */
-    protected function finalize()
-    {
-        parent::tearDown();
-        putenv('ALIBABA_CLOUD_ACCESS_KEY_ID=');
-        putenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET=');
-    }
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage No providers in chain
-     */
-    public function testNoProvides()
-    {
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('No providers in chain');
-        ChainProvider::set();
-    }
-
-    public function testSetIni()
-    {
-        $vf = VirtualAccessKeyCredential::ok();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        ChainProvider::set(
-            ChainProvider::ini()
-        );
-        self::assertTrue(ChainProvider::hasCustomChain());
-        ChainProvider::customProvider(ChainProvider::getDefaultName());
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
-    }
-
-    public function testSetIniEmpty()
-    {
-        try {
-            putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=');
-            ChainProvider::set(
-                ChainProvider::ini()
-            );
-            self::assertTrue(ChainProvider::hasCustomChain());
-            ChainProvider::customProvider(ChainProvider::getDefaultName());
-        } catch (\Exception $exception) {
-            self::assertRegExp('/No such file or directory/', $exception->getMessage());
-        }
-    }
-
-    /**
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Credentials file is not readable: /a/c
-     */
-    public function testSetIniWithDIYFile()
-    {
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=/a/c');
-        ChainProvider::set(
-            ChainProvider::ini()
-        );
-        self::assertTrue(ChainProvider::hasCustomChain());
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Credentials file is not readable: /a/c');
-        ChainProvider::customProvider(ChainProvider::getDefaultName());
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=');
-    }
-
-    public function testInOpenBaseDir()
-    {
-        if (!Helper::isWindows()) {
-            $dirs = 'vfs://AlibabaCloud:/home:/Users:/private:/a/b';
-        } else {
-            $dirs = 'C:\\projects;C:\\Users';
-        }
-
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=/a/c');
-        ini_set('open_basedir', $dirs);
-        self::assertEquals($dirs, ini_get('open_basedir'));
-        ChainProvider::set(
-            ChainProvider::ini()
-        );
-        self::assertTrue(ChainProvider::hasCustomChain());
-        ChainProvider::customProvider(ChainProvider::getDefaultName());
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=');
-        ini_set('open_basedir', null);
-    }
-
-    public function testDefaultProvider()
-    {
-        ChainProvider::defaultProvider(ChainProvider::getDefaultName());
-        self::assertTrue(true);
-    }
-
-    public function testSetEnv()
-    {
-        ChainProvider::set(
-            ChainProvider::env()
-        );
-        self::assertTrue(ChainProvider::hasCustomChain());
-    }
-
-    public function testSetInstance()
-    {
-        putenv('ALIBABA_CLOUD_ECS_METADATA=role_arn');
-        ChainProvider::set(
-            ChainProvider::instance()
-        );
-        self::assertTrue(ChainProvider::hasCustomChain());
-        ChainProvider::customProvider(ChainProvider::getDefaultName());
-        putenv('ALIBABA_CLOUD_ECS_METADATA=');
-    }
-
-    public function testDefaultFile()
-    {
-        self::assertStringEndsWith(
-            'credentials',
-            ChainProvider::getDefaultFile()
-        );
-        putenv('ALIBABA_CLOUD_PROFILE=');
-    }
-
-    public function testDefaultName()
-    {
-        putenv('ALIBABA_CLOUD_PROFILE=default1');
-        self::assertEquals(
-            'default1',
-            ChainProvider::getDefaultName()
-        );
-
-        putenv('ALIBABA_CLOUD_PROFILE=null');
-        self::assertEquals(
-            'default',
-            ChainProvider::getDefaultName()
-        );
-
-        putenv('ALIBABA_CLOUD_PROFILE=');
-    }
-}
diff --git a/tests/Unit/CredentialTest.php b/tests/Unit/CredentialTest.php
index feee2e4..b91279e 100644
--- a/tests/Unit/CredentialTest.php
+++ b/tests/Unit/CredentialTest.php
@@ -9,11 +9,6 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionException;
 
-/**
- * Class CredentialTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
 class CredentialTest extends TestCase
 {
     public function testLoad()
diff --git a/tests/Unit/CredentialsTest.php b/tests/Unit/CredentialsTest.php
index 6a28aa1..f06c1c3 100644
--- a/tests/Unit/CredentialsTest.php
+++ b/tests/Unit/CredentialsTest.php
@@ -8,11 +8,6 @@
 use ReflectionException;
 use RuntimeException;
 
-/**
- * Class CredentialsTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
 class CredentialsTest extends TestCase
 {
 
diff --git a/tests/Unit/EcsRamRoleCredentialTest.php b/tests/Unit/EcsRamRoleCredentialTest.php
deleted file mode 100644
index a92ecee..0000000
--- a/tests/Unit/EcsRamRoleCredentialTest.php
+++ /dev/null
@@ -1,400 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\Credentials;
-use AlibabaCloud\Credentials\EcsRamRoleCredential;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use Exception;
-use GuzzleHttp\Exception\GuzzleException;
-use InvalidArgumentException;
-use PHPUnit\Framework\TestCase;
-use RuntimeException;
-use ReflectionClass;
-
-class EcsRamRoleCredentialTest extends TestCase
-{
-    /**
-     * @var EcsRamRoleCredential
-     */
-    protected $credential;
-
-    /**
-     * @before
-     * Sets up the fixture, for example, open a network connection.
-     * This method is called before a test is executed.
-     */
-    protected function initialize()
-    {
-        parent::setUp();
-        $this->credential = new EcsRamRoleCredential('EcsRamRoleTest');
-        Credentials::cancelMock();
-    }
-
-    /**
-     * @throws GuzzleException
-     */
-    public function testConstruct()
-    {
-        // Setup
-        $roleName = 'role_arn';
-        $expected = "roleName#$roleName";
-
-        // Test
-        $credential = new EcsRamRoleCredential($roleName);
-
-        // Assert
-        $this->assertEquals($roleName, $credential->getRoleName());
-        $this->assertInstanceOf(ShaHmac1Signature::class, $credential->getSignature());
-        $this->assertEquals(false, $credential->isDisableIMDSv1());
-        $this->assertEquals($expected, (string)$credential);
-
-        Credentials::mockResponse(200, [], 'RoleName');
-        $this->credential = new EcsRamRoleCredential();
-        self::assertEquals('RoleName', $this->credential->getRoleName());
-    }
-
-    private function getPrivateField($instance, $field)
-    {
-        $reflection = new ReflectionClass(EcsRamRoleCredential::class);
-        $privateProperty = $reflection->getProperty($field);
-        $privateProperty->setAccessible(true);
-        return $privateProperty->getValue($instance);
-    }
-
-    /**
-     * @throws GuzzleException
-     */
-    public function testConstructWithIMDSv2()
-    {
-        // Setup
-        $roleName = 'role_arn';
-        $disabl1e_imdsv1 = true;
-        $metadataTokenDuration = 3600;
-        $credential = new EcsRamRoleCredential($roleName, $disabl1e_imdsv1, $metadataTokenDuration);
-
-        self::assertEquals(true, $this->getPrivateField($credential, 'disableIMDSv1'));
-        self::assertEquals(3600, $this->getPrivateField($credential, 'metadataTokenDuration'));
-
-        $credential = new EcsRamRoleCredential($roleName);
-
-        self::assertEquals(false, $this->getPrivateField($credential, 'disableIMDSv1'));
-        self::assertEquals(21600, $this->getPrivateField($credential, 'metadataTokenDuration'));
-    }
-
-    /**
-     * @throws GuzzleException
-     */
-    public function testDefault()
-    {
-        $result           = [
-            'Expiration'      => '2049-10-01 00:00:00',
-            'AccessKeyId'     => 'foo',
-            'AccessKeySecret' => 'bar',
-            'SecurityToken'   => 'token',
-            'Code'            => 'Success',
-        ];
-
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleName');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleName');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleName');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleName');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-
-        $this->credential = new EcsRamRoleCredential();
-        self::assertEquals('foo', $this->credential->getAccessKeyId());
-        self::assertEquals('bar', $this->credential->getAccessKeySecret());
-        self::assertEquals('token', $this->credential->getSecurityToken());
-        self::assertEquals(strtotime('2049-10-01 00:00:00'), $this->credential->getExpiration());
-
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleName');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-
-        $credentialModel = $this->credential->getCredential();
-        $this->assertEquals('foo', $credentialModel->getAccessKeyId());
-        $this->assertEquals('bar', $credentialModel->getAccessKeySecret());
-        self::assertEquals('token', $credentialModel->getSecurityToken());
-        $this->assertEquals('ecs_ram_role', $credentialModel->getType());
-    }
-
-    /**
-     * @expectedException InvalidArgumentException
-     * @expectedExceptionMessageRegExp  /The role name was not found in the instance/
-     * @throws GuzzleException
-     */
-    public function testDefault404()
-    {
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(404, [], 'RoleName');
-
-        $this->credential = new EcsRamRoleCredential();
-
-        $this->expectException(InvalidArgumentException::class);
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/The role name was not found in the instance/');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/The role name was not found in the instance/');
-        }
-
-        self::assertEquals('foo', $this->credential->getAccessKeyId());
-    }
-
-    /**
-     * @expectedException RuntimeException
-     * @expectedExceptionMessageRegExp  /Error retrieving credentials from result: RoleName/
-     * @throws GuzzleException
-     */
-    public function testDefault500()
-    {
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(500, [], 'RoleName');
-        $this->credential = new EcsRamRoleCredential();
-
-        $this->expectException(RuntimeException::class);
-
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/Error retrieving role name from result: RoleName/');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/Error retrieving role name from result: RoleName/');
-        }
-        self::assertEquals('foo', $this->credential->getAccessKeyId());
-    }
-
-    /**
-     * @expectedException RuntimeException
-     * @expectedExceptionMessageRegExp  /Error retrieving credentials from result is empty/
-     * @throws GuzzleException
-     */
-    public function testDefaultEmpty()
-    {
-
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], 'RoleNameTest');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], []);
-
-        $this->credential = new EcsRamRoleCredential();
-
-        $this->expectException(RuntimeException::class);
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/Error retrieving credentials from IMDS result:\[\]/');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/Error retrieving credentials from IMDS result:\[\]/');
-        }
-
-        self::assertEquals('foo', $this->credential->getAccessKeyId());
-    }
-
-    /**
-     * Tears down the fixture, for example, close a network connection.
-     * This method is called after a test is executed.
-     *
-     * @throws GuzzleException
-     */
-    public function testSts()
-    {
-        $result = [
-            'Expiration'      => '2049-10-01 00:00:00',
-            'AccessKeyId'     => 'foo',
-            'AccessKeySecret' => 'bar',
-            'SecurityToken'   => 'token',
-            'Code'            => 'Success',
-        ];
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-
-        self::assertEquals('foo', $this->credential->getAccessKeyId());
-        self::assertEquals('bar', $this->credential->getAccessKeySecret());
-        self::assertEquals('token', $this->credential->getSecurityToken());
-        self::assertEquals(strtotime('2049-10-01 00:00:00'), $this->credential->getExpiration());
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Result contains no credentials
-     */
-    public function testStsIncomplete()
-    {
-        $result     = [
-            'Expiration'  => '2049-10-01 00:00:00',
-            'AccessKeyId' => 'foo',
-        ];
-        $credential = new EcsRamRoleCredential('EcsRamRoleTest2');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from IMDS result:{"Expiration":"2049-10-01 00:00:00","AccessKeyId":"foo"}');
-        // Test
-        self::assertEquals('foo', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Result contains no credentials
-     */
-    public function testStsNoCode()
-    {
-        $result = [
-            'Expiration'      => '2049-10-01 00:00:00',
-            'AccessKeyId'     => 'foo',
-            'AccessKeySecret' => 'bar',
-            'SecurityToken'   => 'token',
-        ];
-        $credential = new EcsRamRoleCredential('EcsRamRoleTest2');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(200, [], $result);
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from IMDS result, Code is not Success:{"Expiration":"2049-10-01 00:00:00","AccessKeyId":"foo","AccessKeySecret":"bar","SecurityToken":"token"}');
-        // Test
-        self::assertEquals('foo', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The role was not found in the instance
-     */
-    public function testSts404()
-    {
-        $result     = [
-            'Expiration'  => '2049-10-01 00:00:00',
-            'AccessKeyId' => 'foo',
-        ];
-        $credential = new EcsRamRoleCredential('EcsRamRoleTest3');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(404, [], $result);
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('The role was not found in the instance');
-        // Test
-        self::assertEquals('foo', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessageRegExp /Error retrieving credentials from result/
-     */
-    public function testSts500()
-    {
-        $result = [
-            'Expiration'  => '2049-10-01 00:00:00',
-            'AccessKeyId' => 'foo',
-        ];
-
-        $credential = new EcsRamRoleCredential('EcsRamRoleTest3');
-        Credentials::mockResponse(200, [], 'Token');
-        Credentials::mockResponse(500, [], $result);
-
-        $this->expectException(RuntimeException::class);
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/Error refreshing credentials from IMDS, statusCode: 500, result/');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/Error refreshing credentials from IMDS, statusCode: 500, result/');
-        }
-
-        // Test
-        self::assertEquals('foo', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage roleName cannot be empty
-     */
-    public function testRoleNameEmpty()
-    {
-        // Setup
-        $roleName = '';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('roleName cannot be empty');
-        // Test
-        new EcsRamRoleCredential($roleName);
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessageRegExp /timed/
-     */
-    public function testStsWithoutMock()
-    {
-        Credentials::cancelMock();
-
-        $credential = new EcsRamRoleCredential('EcsRamRoleTest4');
-
-        $this->expectException(RuntimeException::class);
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/Timeout was reached/');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/Timeout was reached/');
-        }
-        // Test
-        self::assertEquals('foo', $credential->getAccessKeyId());
-    }
-
-    public function testGetRoleNameFromMeta()
-    {
-        $provider = new EcsRamRoleCredential();
-
-        Credentials::mockResponse(200, [], 'RoleName');
-
-        $roleName = $provider->getRoleNameFromMeta();
-        self::assertEquals('RoleName', $roleName);
-    }
-
-    public function testGetRoleNameFromMetaError()
-    {
-        $provider = new EcsRamRoleCredential();
-
-        Credentials::mockResponse(200, [], '');
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from result is empty');
-        $provider->getRoleNameFromMeta();
-    }
-
-    public function testGetRoleNameFromMeta404()
-    {
-        $provider = new EcsRamRoleCredential();
-
-        Credentials::mockResponse(404, [], 'Error');
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('The role name was not found in the instance');
-
-        $provider->getRoleNameFromMeta();
-    }
-
-    public function testRoleNameFromMetaError()
-    {
-        $provider = new EcsRamRoleCredential();
-
-        Credentials::mockResponse(500, [], 'Error');
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from result: Error');
-
-        $provider->getRoleNameFromMeta();
-    }
-}
diff --git a/tests/Unit/Ini/VirtualAccessKeyCredential.php b/tests/Unit/Ini/VirtualAccessKeyCredential.php
index 66604ab..bdfd0ca 100644
--- a/tests/Unit/Ini/VirtualAccessKeyCredential.php
+++ b/tests/Unit/Ini/VirtualAccessKeyCredential.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Ini;
 
+use AlibabaCloud\Configure\Config;
 use org\bovigo\vfs\vfsStream;
 
 /**
@@ -75,7 +76,7 @@ public function url()
 
         return vfsStream::newFile($fileName)
                         ->withContent($this->content)
-                        ->at(vfsStream::setup('AlibabaCloud'))
+                        ->at(vfsStream::setup(Config::KEY))
                         ->url();
     }
 
diff --git a/tests/Unit/Ini/VirtualCLIConfig.php b/tests/Unit/Ini/VirtualCLIConfig.php
index c86b90e..9c9d56b 100644
--- a/tests/Unit/Ini/VirtualCLIConfig.php
+++ b/tests/Unit/Ini/VirtualCLIConfig.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Ini;
 
+use AlibabaCloud\Configure\Config;
 use org\bovigo\vfs\vfsStream;
 
 /**
@@ -45,7 +46,7 @@ public function url()
 
         return vfsStream::newFile($fileName)
                         ->withContent($this->content)
-                        ->at(vfsStream::setup('.aliyun'))
+                        ->at(vfsStream::setup(Config::CLI_CONFIG_DIR))
                         ->url();
     }
 
diff --git a/tests/Unit/Providers/CLIProfileCredentialsProviderTest.php b/tests/Unit/Providers/CLIProfileCredentialsProviderTest.php
index 2874114..0a7c032 100644
--- a/tests/Unit/Providers/CLIProfileCredentialsProviderTest.php
+++ b/tests/Unit/Providers/CLIProfileCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Providers\CLIProfileCredentialsProvider;
 use AlibabaCloud\Credentials\Tests\Unit\Ini\VirtualCLIConfig;
@@ -10,11 +11,6 @@
 use RuntimeException;
 use InvalidArgumentException;
 
-/**
- * Class CLIProfileCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class CLIProfileCredentialsProviderTest extends TestCase
 {
     /**
@@ -64,7 +60,7 @@ public function testConstruct()
         $params = [
             'profileName' => 'test',
         ];
-        putenv("ALIBABA_CLOUD_PROFILE=profileName");
+        putenv(Config:: ENV_PREFIX . "PROFILE=profileName");
 
         $provider = new CLIProfileCredentialsProvider($params);
 
@@ -73,7 +69,7 @@ public function testConstruct()
         self::assertEquals('test', $profileName);
         self::assertEquals('cli_profile', $provider->getProviderName());
 
-        putenv("ALIBABA_CLOUD_PROFILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
     }
 
     public function testEmpty()
@@ -247,7 +243,7 @@ public function testOIDCRoleArn()
 
     public function testDisableCLI()
     {
-        putenv("ALIBABA_CLOUD_CLI_PROFILE_DISABLED=true");
+        putenv(Config:: ENV_PREFIX . "CLI_PROFILE_DISABLED=true");
 
         $provider = new CLIProfileCredentialsProvider();
 
@@ -259,6 +255,6 @@ public function testDisableCLI()
         }
         $provider->getCredentials();
 
-        putenv("ALIBABA_CLOUD_CLI_PROFILE_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "CLI_PROFILE_DISABLED=");
     }
 }
diff --git a/tests/Unit/Providers/DefaultCredentialsProviderTest.php b/tests/Unit/Providers/DefaultCredentialsProviderTest.php
index 5769acd..da95169 100644
--- a/tests/Unit/Providers/DefaultCredentialsProviderTest.php
+++ b/tests/Unit/Providers/DefaultCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Providers\DefaultCredentialsProvider;
 use AlibabaCloud\Credentials\Providers\ProfileCredentialsProvider;
 use AlibabaCloud\Credentials\Credentials;
@@ -11,11 +12,6 @@
 use RuntimeException;
 use InvalidArgumentException;
 
-/**
- * Class DefaultCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class DefaultCredentialsProviderTest extends TestCase
 {
     /**
@@ -58,8 +54,8 @@ public function testGetProviderName()
 
     public function testDefaultProviderWithEnv()
     {
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_ID=id");
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET=secret");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_ID=id");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_SECRET=secret");
 
         $provider = new DefaultCredentialsProvider();
         $credentials = $provider->getCredentials();
@@ -67,25 +63,25 @@ public function testDefaultProviderWithEnv()
         self::assertEquals("secret", $credentials->getAccessKeySecret());
         self::assertEquals("default/env", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_SECURITY_TOKEN=token");
+        putenv(Config:: ENV_PREFIX . "SECURITY_TOKEN=token");
         $credentials = $provider->getCredentials();
         self::assertEquals("id", $credentials->getAccessKeyId());
         self::assertEquals("secret", $credentials->getAccessKeySecret());
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/env", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_ID=");
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET=");
-        putenv("ALIBABA_CLOUD_SECURITY_TOKEN=");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_ID=");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_SECRET=");
+        putenv(Config:: ENV_PREFIX . "SECURITY_TOKEN=");
     }
 
     public function testDefaultProviderWithOIDC()
     {
-        putenv("ALIBABA_CLOUD_ROLE_ARN=role-arn");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=provider-arn");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=role-arn");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=provider-arn");
         $vf = new VirtualFile("token");
         $url = $vf->url("token-file");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=$url");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=$url");
 
         $provider = new DefaultCredentialsProvider();
         $result = '{
@@ -108,28 +104,28 @@ public function testDefaultProviderWithOIDC()
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/oidc_role_arn", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_ROLE_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=");
     }
 
     public function testDefaultProviderWithProfile()
     {
         $vf = VirtualAccessKeyCredential::ok();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=ok");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=ok");
         $provider = new DefaultCredentialsProvider();
         $credentials = $provider->getCredentials();
         self::assertEquals("foo", $credentials->getAccessKeyId());
         self::assertEquals("bar", $credentials->getAccessKeySecret());
         self::assertEquals("default/profile", $credentials->getProviderName());
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
-        putenv("ALIBABA_CLOUD_PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
     }
 
     public function testDefaultProviderWithIMDS()
     {
-        putenv("ALIBABA_CLOUD_ECS_METADATA=roleName");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA=roleName");
 
         $provider = new DefaultCredentialsProvider();
         $result = [
@@ -147,13 +143,13 @@ public function testDefaultProviderWithIMDS()
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/ecs_ram_role", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_ECS_METADATA=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA=");
     }
 
     public function testDefaultProviderWithURI()
     {
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=true");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=http://localhost:8080/token");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=true");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=http://localhost:8080/token");
 
         $provider = new DefaultCredentialsProvider();
         $result = [
@@ -169,20 +165,20 @@ public function testDefaultProviderWithURI()
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/credential_uri", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=");
     }
 
     public function testDefaultProviderWithReuseLast()
     {
         // 同时开启OIDC和CredentialsURI
-        putenv("ALIBABA_CLOUD_ROLE_ARN=test-role-arn");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=test-provider-arn");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=test-role-arn");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=test-provider-arn");
         $vf = new VirtualFile("token");
         $url = $vf->url("token-file");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=$url");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=http://localhost:8080/token");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=true");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=$url");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=http://localhost:8080/token");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=true");
 
         $provider = new DefaultCredentialsProvider();
         $result = [
@@ -218,23 +214,23 @@ public function testDefaultProviderWithReuseLast()
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/credential_uri", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=");
-        putenv("ALIBABA_CLOUD_ROLE_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=");
     }
 
     public function testDefaultProviderWithUnReuseLast()
     {
         // 同时开启OIDC和CredentialsURI
-        putenv("ALIBABA_CLOUD_ROLE_ARN=test-role-arn");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=test-provider-arn");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=test-role-arn");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=test-provider-arn");
         $vf = new VirtualFile("token");
         $url = $vf->url("token-file");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=$url");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=http://localhost:8080/token");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=true");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=$url");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=http://localhost:8080/token");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=true");
 
         $provider = new DefaultCredentialsProvider([
             'reuseLastProviderEnabled' => false,
@@ -272,10 +268,10 @@ public function testDefaultProviderWithUnReuseLast()
         self::assertEquals("token", $credentials->getSecurityToken());
         self::assertEquals("default/oidc_role_arn", $credentials->getProviderName());
 
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=");
-        putenv("ALIBABA_CLOUD_ROLE_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=");
     }
 }
diff --git a/tests/Unit/Providers/EcsRamRoleCredentialsProviderTest.php b/tests/Unit/Providers/EcsRamRoleCredentialsProviderTest.php
index 186dc83..14bbabc 100644
--- a/tests/Unit/Providers/EcsRamRoleCredentialsProviderTest.php
+++ b/tests/Unit/Providers/EcsRamRoleCredentialsProviderTest.php
@@ -9,12 +9,8 @@
 use PHPUnit\Framework\TestCase;
 use RuntimeException;
 use ReflectionClass;
+use AlibabaCloud\Configure\Config;
 
-/**
- * Class EcsRamRoleCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class EcsRamRoleCredentialsProviderTest extends TestCase
 {
 
@@ -61,8 +57,8 @@ public function testConstruct()
             'connectTimeout' => 10,
             'readTimeout' => 10,
         ];
-        putenv("ALIBABA_CLOUD_ECS_METADATA=roleName");
-        putenv("ALIBABA_CLOUD_IMDSV1_DISABLED=false");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA=roleName");
+        putenv(Config:: ENV_PREFIX . "IMDSV1_DISABLED=false");
 
         $provider = new EcsRamRoleCredentialsProvider($params, $config);
 
@@ -77,8 +73,8 @@ public function testConstruct()
         self::assertEquals(true, $provider->isDisableIMDSv1());
         self::assertEquals('ecs_ram_role', $provider->getProviderName());
 
-        putenv("ALIBABA_CLOUD_ECS_METADATA=");
-        putenv("ALIBABA_CLOUD_IMDSV1_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA=");
+        putenv(Config:: ENV_PREFIX . "IMDSV1_DISABLED=");
     }
 
     /**
@@ -88,7 +84,7 @@ public function testConstruct()
     public function testEnvDisabled()
     {
 
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=true");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=true");
         $provider = new EcsRamRoleCredentialsProvider([], []);
 
         $this->expectException(RuntimeException::class);
@@ -99,7 +95,7 @@ public function testEnvDisabled()
         }
         $provider->getCredentials();
 
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=");
     }
 
     public function testGetDisableECSIMDSv1()
@@ -124,37 +120,37 @@ public function testGetDisableECSIMDSv1()
 
         self::assertEquals(false, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=true');
-
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=true');
+        
         $provider = new EcsRamRoleCredentialsProvider($params);
 
         self::assertEquals(true, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=TRUE');
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=TRUE');
 
         $provider = new EcsRamRoleCredentialsProvider($params);
 
         self::assertEquals(true, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=ok');
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=ok');
 
         $provider = new EcsRamRoleCredentialsProvider($params);
 
         self::assertEquals(false, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=1');
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=1');
 
         $provider = new EcsRamRoleCredentialsProvider($params);
 
         self::assertEquals(false, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=false');
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=false');
 
         $provider = new EcsRamRoleCredentialsProvider($params);
 
         self::assertEquals(false, $this->invokeProtectedFunc($provider, 'isDisableIMDSv1'));
 
-        putenv('ALIBABA_CLOUD_IMDSV1_DISABLED=');
+        putenv(Config::ENV_PREFIX + 'IMDSV1_DISABLED=');
 
         $provider = new EcsRamRoleCredentialsProvider($params);
 
diff --git a/tests/Unit/Providers/OIDCRoleArnCredentialsProviderTest.php b/tests/Unit/Providers/OIDCRoleArnCredentialsProviderTest.php
index 0dea255..11e2f11 100644
--- a/tests/Unit/Providers/OIDCRoleArnCredentialsProviderTest.php
+++ b/tests/Unit/Providers/OIDCRoleArnCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Tests\Mock\VirtualFile;
 use AlibabaCloud\Credentials\Providers\OIDCRoleArnCredentialsProvider;
@@ -10,11 +11,6 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 
-/**
- * Class OIDCRoleArnCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class OIDCRoleArnCredentialsProviderTest extends TestCase
 {
 
@@ -47,18 +43,18 @@ public function testConstruct()
             'policy' => 'policy',
             'stsRegionId' => 'cn-beijing',
             'enableVpc' => true,
-            'stsEndpoint' => 'sts.cn-zhangjiakou.aliyuncs.com'
+            'stsEndpoint' => 'sts.cn-zhangjiakou.' . Config:: ENDPOINT_SUFFIX
         ];
         $config = [
             'connectTimeout' => 10,
             'readTimeout' => 10,
         ];
-        putenv("ALIBABA_CLOUD_ROLE_ARN=roleArn");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=providerArn");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=/b/c");
-        putenv("ALIBABA_CLOUD_ROLE_SESSION_NAME=sessionName");
-        putenv("ALIBABA_CLOUD_STS_REGION=cn-hangzhou");
-        putenv("ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED=true");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=roleArn");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=providerArn");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=/b/c");
+        putenv(Config:: ENV_PREFIX . "ROLE_SESSION_NAME=sessionName");
+        putenv(Config:: ENV_PREFIX . "STS_REGION=cn-hangzhou");
+        putenv(Config:: ENV_PREFIX . "VPC_ENDPOINT_ENABLED=true");
 
         $provider = new OIDCRoleArnCredentialsProvider($params, $config);
         self::assertEquals('oidc_role_arn', $provider->getProviderName());
@@ -67,7 +63,7 @@ public function testConstruct()
         $policy = $this->getPrivateField($provider, 'policy');
         $oidcTokenFilePath = $this->getPrivateField($provider, 'oidcTokenFilePath');
         $durationSeconds = $this->getPrivateField($provider, 'durationSeconds');
-        self::assertEquals('sts.cn-zhangjiakou.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('sts.cn-zhangjiakou.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertEquals('policy', $policy);
         self::assertEquals('/a/b', $oidcTokenFilePath);
         self::assertEquals(3600, $durationSeconds);
@@ -79,17 +75,17 @@ public function testConstruct()
         $policy = $this->getPrivateField($provider, 'policy');
         $oidcTokenFilePath = $this->getPrivateField($provider, 'oidcTokenFilePath');
         $durationSeconds = $this->getPrivateField($provider, 'durationSeconds');
-        self::assertEquals('sts-vpc.cn-hangzhou.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('stscn-hangzhou.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertNull($policy);
         self::assertEquals('/b/c', $oidcTokenFilePath);
         self::assertEquals(3600, $durationSeconds);
 
-        putenv("ALIBABA_CLOUD_ROLE_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_PROVIDER_ARN=");
-        putenv("ALIBABA_CLOUD_OIDC_TOKEN_FILE=");
-        putenv("ALIBABA_CLOUD_ROLE_SESSION_NAME=");
-        putenv("ALIBABA_CLOUD_STS_REGION=");
-        putenv("ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED=");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_PROVIDER_ARN=");
+        putenv(Config:: ENV_PREFIX . "OIDC_TOKEN_FILE=");
+        putenv(Config:: ENV_PREFIX . "ROLE_SESSION_NAME=");
+        putenv(Config:: ENV_PREFIX . "STS_REGION=");
+        putenv(Config:: ENV_PREFIX . "VPC_ENDPOINT_ENABLED=");
     }
 
     public function testConstructErrorRoleArn()
diff --git a/tests/Unit/Providers/ProfileCredentialsProviderTest.php b/tests/Unit/Providers/ProfileCredentialsProviderTest.php
index 864ae2a..5889c4f 100644
--- a/tests/Unit/Providers/ProfileCredentialsProviderTest.php
+++ b/tests/Unit/Providers/ProfileCredentialsProviderTest.php
@@ -14,12 +14,8 @@
 use ReflectionClass;
 use RuntimeException;
 use InvalidArgumentException;
+use AlibabaCloud\Configure\Config;
 
-/**
- * Class ProfileCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class ProfileCredentialsProviderTest extends TestCase
 {
 
@@ -53,8 +49,8 @@ public function testConstruct()
         $params = [
             'profileName' => 'test',
         ];
-        putenv("ALIBABA_CLOUD_PROFILE=profileName");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=/a/b");
+        putenv(Config:: ENV_PREFIX . "PROFILE=profileName");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=/a/b");
 
         $provider = new ProfileCredentialsProvider($params);
 
@@ -65,15 +61,15 @@ public function testConstruct()
         self::assertEquals('/a/b', $profileFile);
         self::assertEquals('profile', $provider->getProviderName());
 
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testInvalidType()
     {
         $vf = VirtualAccessKeyCredential::invalidType();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $this->expectException(RuntimeException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
             $this->expectExceptionMessageMatches('/Unsupported credential type from credentials file: invalidType/');
@@ -82,29 +78,29 @@ public function testInvalidType()
         }
         $provider = new ProfileCredentialsProvider();
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testAK()
     {
         $vf = VirtualAccessKeyCredential::ok();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=ok");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=ok");
         $provider = new ProfileCredentialsProvider();
         $credentials = $provider->getCredentials();
         self::assertEquals('foo', $credentials->getAccessKeyId());
         self::assertEquals('bar', $credentials->getAccessKeySecret());
         self::assertEquals('profile/static_ak', $credentials->getProviderName());
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testAKNoKeyError()
     {
         $vf = VirtualAccessKeyCredential::noKey();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
             $this->expectExceptionMessageMatches('/accessKeyId must be a string/');
@@ -113,15 +109,15 @@ public function testAKNoKeyError()
         }
         $provider = new ProfileCredentialsProvider();
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testAKNoTypeError()
     {
         $vf = VirtualAccessKeyCredential::noType();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $this->expectException(RuntimeException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
             $this->expectExceptionMessageMatches('/Unsupported credential type from credentials file/');
@@ -130,15 +126,15 @@ public function testAKNoTypeError()
         }
         $provider = new ProfileCredentialsProvider();
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testRamRoleArn()
     {
         $vf = VirtualRamRoleArnCredential::client();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
 
         $result = '{
@@ -155,15 +151,15 @@ public function testRamRoleArn()
         self::assertEquals('foo', $credentials->getAccessKeyId());
         self::assertEquals('bar', $credentials->getAccessKeySecret());
         self::assertEquals('profile/ram_role_arn/static_ak', $credentials->getProviderName());
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testRamRoleArnError()
     {
         $vf = VirtualRamRoleArnCredential::noRoleArn();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
@@ -172,16 +168,16 @@ public function testRamRoleArnError()
             $this->expectExceptionMessageRegExp('/roleArn cannot be empty/');
         }
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testEcsRamRole()
     {
         $vf = VirtualEcsRamRoleCredential::client();
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=false");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=false");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
 
         $result           = [
@@ -199,9 +195,9 @@ public function testEcsRamRole()
         self::assertEquals('foo', $credentials->getAccessKeyId());
         self::assertEquals('bar', $credentials->getAccessKeySecret());
         self::assertEquals('profile/ecs_ram_role', $credentials->getProviderName());
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
-        putenv("ALIBABA_CLOUD_ECS_METADATA_DISABLED=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "ECS_METADATA_DISABLED=");
     }
 
     public function testOIDCRoleArn()
@@ -209,8 +205,8 @@ public function testOIDCRoleArn()
         $vf = new VirtualFile("token");
         $url = $vf->url("token-file");
         $vf = VirtualOIDCRoleArnCredential::client($url);
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
 
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
@@ -220,15 +216,15 @@ public function testOIDCRoleArn()
         }
         $provider = new ProfileCredentialsProvider();
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testOIDCRoleArnError()
     {
         $vf = VirtualOIDCRoleArnCredential::noRoleArn();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
@@ -237,15 +233,15 @@ public function testOIDCRoleArnError()
             $this->expectExceptionMessageRegExp('/roleArn cannot be empty/');
         }
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testRsaKeyPairNoPrivateKeyFile()
     {
         $vf = VirtualRsaKeyPairCredential::noPrivateKeyFile();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
@@ -254,15 +250,15 @@ public function testRsaKeyPairNoPrivateKeyFile()
             $this->expectExceptionMessageRegExp('/privateKeyFile must be a string/');
         }
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testRsaKeyPairNoPublicKeyId()
     {
         $vf = VirtualRsaKeyPairCredential::noPublicKeyId();
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=$vf");
-        putenv("ALIBABA_CLOUD_PROFILE=phpunit");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=$vf");
+        putenv(Config:: ENV_PREFIX . "PROFILE=phpunit");
         $provider = new ProfileCredentialsProvider();
         $this->expectException(InvalidArgumentException::class);
         if (method_exists($this, 'expectExceptionMessageMatches')) {
@@ -271,8 +267,8 @@ public function testRsaKeyPairNoPublicKeyId()
             $this->expectExceptionMessageRegExp('/publicKeyId must be a string/');
         }
         $provider->getCredentials();
-        putenv("ALIBABA_CLOUD_PROFILE=");
-        putenv("ALIBABA_CLOUD_CREDENTIALS_FILE=");
+        putenv(Config:: ENV_PREFIX . "PROFILE=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_FILE=");
     }
 
     public function testSetIniError()
@@ -283,9 +279,9 @@ public function testSetIniError()
         } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
             $this->expectExceptionMessageRegExp('/Unable to open credentials file/');
         }
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=/c/d');
+        putenv(Config::ENV_PREFIX + 'CREDENTIALS_FILE=/c/d');
         $provider = new ProfileCredentialsProvider();
         $provider->getCredentials();
-        putenv('ALIBABA_CLOUD_CREDENTIALS_FILE=');
+        putenv(Config::ENV_PREFIX + 'CREDENTIALS_FILE=');
     }
 }
diff --git a/tests/Unit/Providers/RamRoleArnCredentialsProviderTest.php b/tests/Unit/Providers/RamRoleArnCredentialsProviderTest.php
index dda6091..3c9410e 100644
--- a/tests/Unit/Providers/RamRoleArnCredentialsProviderTest.php
+++ b/tests/Unit/Providers/RamRoleArnCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Providers\RamRoleArnCredentialsProvider;
 use AlibabaCloud\Credentials\Providers\StaticAKCredentialsProvider;
@@ -10,11 +11,6 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 
-/**
- * Class RamRoleArnCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class RamRoleArnCredentialsProviderTest extends TestCase
 {
 
@@ -48,16 +44,16 @@ public function testConstruct()
             'externalId' => 'externalId',
             'stsRegionId' => 'cn-beijing',
             'enableVpc' => true,
-            'stsEndpoint' => 'sts.cn-zhangjiakou.aliyuncs.com'
+            'stsEndpoint' => 'sts.cn-zhangjiakou.' . Config:: ENDPOINT_SUFFIX
         ];
         $config = [
             'connectTimeout' => 10,
             'readTimeout' => 10,
         ];
-        putenv("ALIBABA_CLOUD_ROLE_ARN=roleArn");
-        putenv("ALIBABA_CLOUD_ROLE_SESSION_NAME=sessionName");
-        putenv("ALIBABA_CLOUD_STS_REGION=cn-hangzhou");
-        putenv("ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED=true");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=roleArn");
+        putenv(Config:: ENV_PREFIX . "ROLE_SESSION_NAME=sessionName");
+        putenv(Config:: ENV_PREFIX . "STS_REGION=cn-hangzhou");
+        putenv(Config:: ENV_PREFIX . "VPC_ENDPOINT_ENABLED=true");
 
         $provider = new RamRoleArnCredentialsProvider($params, $config);
 
@@ -70,7 +66,7 @@ public function testConstruct()
         self::assertEquals('ram_role_arn#credential#foo#roleArn#test#roleSessionName#default', $provider->key());
         $stsEndpoint = $this->getPrivateField($provider, 'stsEndpoint');
         $externalId = $this->getPrivateField($provider, 'externalId');
-        self::assertEquals('sts.cn-zhangjiakou.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('sts.cn-zhangjiakou.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertEquals('externalId', $externalId);
 
         $params = [
@@ -88,13 +84,13 @@ public function testConstruct()
         self::assertEquals('ram_role_arn#credential#foo#roleArn#roleArn#roleSessionName#sessionName', $provider->key());
         $stsEndpoint = $this->getPrivateField($provider, 'stsEndpoint');
         $externalId = $this->getPrivateField($provider, 'externalId');
-        self::assertEquals('sts-vpc.cn-hangzhou.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('sts.cn-hangzhou.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertNull($externalId);
 
-        putenv("ALIBABA_CLOUD_ROLE_ARN=");
-        putenv("ALIBABA_CLOUD_ROLE_SESSION_NAME=");
-        putenv("ALIBABA_CLOUD_STS_REGION=");
-        putenv("ALIBABA_CLOUD_VPC_ENDPOINT_ENABLED=");
+        putenv(Config:: ENV_PREFIX . "ROLE_ARN=");
+        putenv(Config:: ENV_PREFIX . "ROLE_SESSION_NAME=");
+        putenv(Config:: ENV_PREFIX . "STS_REGION=");
+        putenv(Config:: ENV_PREFIX . "VPC_ENDPOINT_ENABLED");
     }
 
     public function testConstructErrorCredentials()
diff --git a/tests/Unit/Providers/RsaKeyPairCredentialsProviderTest.php b/tests/Unit/Providers/RsaKeyPairCredentialsProviderTest.php
index 1b63cac..b9755a1 100644
--- a/tests/Unit/Providers/RsaKeyPairCredentialsProviderTest.php
+++ b/tests/Unit/Providers/RsaKeyPairCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Tests\Unit\Ini\VirtualRsaKeyPairCredential;
 use AlibabaCloud\Credentials\Providers\RsaKeyPairCredentialsProvider;
@@ -10,11 +11,6 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 
-/**
- * Class RsaKeyPairCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class RsaKeyPairCredentialsProviderTest extends TestCase
 {
 
@@ -42,7 +38,7 @@ public function testConstruct()
         $params = [
             'publicKeyId' => 'test',
             'privateKeyFile' => $url,
-            'stsEndpoint' => 'sts.aliyuncs.com',
+            'stsEndpoint' => 'sts.' . Config:: ENDPOINT_SUFFIX,
             'durationSeconds' => 6000,
         ];
         $config = [
@@ -59,7 +55,7 @@ public function testConstruct()
         self::assertEquals('test', $provider->getPublicKeyId());
         $stsEndpoint = $this->getPrivateField($provider, 'stsEndpoint');
         $durationSeconds = $this->getPrivateField($provider, 'durationSeconds');
-        self::assertEquals('sts.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('sts.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertEquals(6000, $durationSeconds);
 
         $params = [
@@ -74,7 +70,7 @@ public function testConstruct()
         self::assertEquals('test', $provider->getPublicKeyId());
         $stsEndpoint = $this->getPrivateField($provider, 'stsEndpoint');
         $durationSeconds = $this->getPrivateField($provider, 'durationSeconds');
-        self::assertEquals('sts.ap-northeast-1.aliyuncs.com', $stsEndpoint);
+        self::assertEquals('sts.ap-northeast-1.' . Config:: ENDPOINT_SUFFIX, $stsEndpoint);
         self::assertEquals(3600, $durationSeconds);
 
     }
diff --git a/tests/Unit/Providers/SessionCredentialsProviderTest.php b/tests/Unit/Providers/SessionCredentialsProviderTest.php
index d577a80..0c3f30a 100644
--- a/tests/Unit/Providers/SessionCredentialsProviderTest.php
+++ b/tests/Unit/Providers/SessionCredentialsProviderTest.php
@@ -76,11 +76,6 @@ public function getCredentialsInCache()
     }
 }
 
-/**
- * Class SessionCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class SessionCredentialsProviderTest extends TestCase
 {
 
diff --git a/tests/Unit/Providers/StaticCredentialsProviderTest.php b/tests/Unit/Providers/StaticCredentialsProviderTest.php
index 5a8a1ac..a1af523 100644
--- a/tests/Unit/Providers/StaticCredentialsProviderTest.php
+++ b/tests/Unit/Providers/StaticCredentialsProviderTest.php
@@ -2,16 +2,12 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Providers\StaticSTSCredentialsProvider;
 use AlibabaCloud\Credentials\Providers\StaticAKCredentialsProvider;
 use PHPUnit\Framework\TestCase;
 
-/**
- * Class StaticCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class StaticCredentialsProviderTest extends TestCase
 {
 
@@ -32,9 +28,9 @@ public function testConstruct()
             'accessKeySecret' => 'test',
             'securityToken' => 'test',
         ];
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_ID=id");
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET=secret");
-        putenv("ALIBABA_CLOUD_SECURITY_TOKEN=token");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_ID=id");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_SECRET=secret");
+        putenv(Config:: ENV_PREFIX . "SECURITY_TOKEN=token");
 
         $provider = new StaticSTSCredentialsProvider($params);
         $credential = $provider->getCredentials();
@@ -68,8 +64,8 @@ public function testConstruct()
         self::assertEquals('', $credential->getSecurityToken());
         self::assertEquals('static_ak', $credential->getProviderName());
 
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_ID=");
-        putenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET=");
-        putenv("ALIBABA_CLOUD_SECURITY_TOKEN=");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_ID=");
+        putenv(Config:: ENV_PREFIX . "ACCESS_KEY_SECRET=");
+        putenv(Config:: ENV_PREFIX . "SECURITY_TOKEN=");
     }
 }
diff --git a/tests/Unit/Providers/URLCredentialsProviderTest.php b/tests/Unit/Providers/URLCredentialsProviderTest.php
index 5bfcfa1..1cd8f1b 100644
--- a/tests/Unit/Providers/URLCredentialsProviderTest.php
+++ b/tests/Unit/Providers/URLCredentialsProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace AlibabaCloud\Credentials\Tests\Unit\Providers;
 
+use AlibabaCloud\Configure\Config;
 use AlibabaCloud\Credentials\Credentials;
 use AlibabaCloud\Credentials\Providers\URLCredentialsProvider;
 use RuntimeException;
@@ -9,11 +10,6 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 
-/**
- * Class URLCredentialsProviderTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Providers
- */
 class URLCredentialsProviderTest extends TestCase
 {
 
@@ -44,7 +40,7 @@ public function testConstruct()
             'connectTimeout' => 10,
             'readTimeout' => 10,
         ];
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=http://test.aliyun.com");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=http://test.aliyun.com");
 
         $provider = new URLCredentialsProvider($params, $config);
 
@@ -59,7 +55,7 @@ public function testConstruct()
         $credentialsURI = $this->getPrivateField($provider, 'credentialsURI');
         self::assertEquals('http://test.aliyun.com', $credentialsURI);
 
-        putenv("ALIBABA_CLOUD_CREDENTIALS_URI=");
+        putenv(Config:: ENV_PREFIX . "CREDENTIALS_URI=");
     }
 
     public function testConstructError()
@@ -79,7 +75,7 @@ public function testConstructError()
     public function testSts()
     {
         $params = [
-            'credentialsURI' => 'http://credentials.aliyun.com',
+            'credentialsURI' => 'http://example.com',
         ];
         $provider = new URLCredentialsProvider($params);
 
diff --git a/tests/Unit/RamRoleArnCredentialTest.php b/tests/Unit/RamRoleArnCredentialTest.php
deleted file mode 100644
index 040791f..0000000
--- a/tests/Unit/RamRoleArnCredentialTest.php
+++ /dev/null
@@ -1,191 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\Credentials;
-use AlibabaCloud\Credentials\RamRoleArnCredential;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use Exception;
-use RuntimeException;
-use InvalidArgumentException;
-use PHPUnit\Framework\TestCase;
-
-class RamRoleArnCredentialTest extends TestCase
-{
-
-    /**
-     * @var RamRoleArnCredential
-     */
-    protected $credential;
-
-    public function testConstruct()
-    {
-        putenv('DEBUG=sdk');
-
-        // Setup
-        $accessKeyId     = 'access_key_id';
-        $accessKeySecret = 'access_key_secret';
-        $arn             = 'role_arn';
-        $sessionName     = 'role_session_name';
-        $policy          = '';
-
-        // Test
-        $credential = new RamRoleArnCredential([
-            'access_key_id'     => 'access_key_id',
-            'access_key_secret' => 'access_key_secret',
-            'role_arn'          => 'role_arn',
-            'role_session_name' => 'role_session_name',
-            'policy'            => '',
-        ]);
-
-        // Assert
-        $this->assertEquals($accessKeyId, $credential->getOriginalAccessKeyId());
-        $this->assertEquals($accessKeySecret, $credential->getOriginalAccessKeySecret());
-        $this->assertEquals($arn, $credential->getRoleArn());
-        $this->assertEquals($sessionName, $credential->getRoleSessionName());
-        $this->assertEquals($policy, $credential->getPolicy());
-        $this->assertInstanceOf(ShaHmac1Signature::class, $credential->getSignature());
-        $this->assertEquals(
-            "$accessKeyId#$accessKeySecret#$arn#$sessionName",
-            (string)$credential
-        );
-
-        $this->assertEquals(
-            [],
-            $credential->getConfig()
-        );
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     */
-    public function testSts()
-    {
-        $result = '{
-    "RequestId": "88FEA385-EF5D-4A8A-8C00-A07DAE3BFD44",
-    "AssumedRoleUser": {
-        "AssumedRoleId": "********************",
-        "Arn": "********************"
-    },
-    "Credentials": {
-        "AccessKeySecret": "********************",
-        "AccessKeyId": "STS.**************",
-        "Expiration": "2049-02-25T03:56:19Z",
-        "SecurityToken": "**************"
-    }
-}';
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-        $credential = new RamRoleArnCredential([
-            'access_key_id'     => 'access_key_id',
-            'access_key_secret' => 'access_key_secret',
-            'role_arn'          => 'role_arn1',
-            'role_session_name' => 'role_session_name',
-            'policy'            => [],
-        ]);
-
-        self::assertEquals('STS.**************', $credential->getAccessKeyId());
-        self::assertEquals('********************', $credential->getAccessKeySecret());
-        self::assertEquals('**************', $credential->getSecurityToken());
-        self::assertEquals(strtotime('2049-02-25T03:56:19Z'), $credential->getExpiration());
-
-        Credentials::mockResponse(200, [], $result);
-        $credentialModel = $credential->getCredential();
-        $this->assertEquals('STS.**************', $credentialModel->getAccessKeyId());
-        $this->assertEquals('********************', $credentialModel->getAccessKeySecret());
-        self::assertEquals('**************', $credentialModel->getSecurityToken());
-        $this->assertEquals('ram_role_arn', $credentialModel->getType());
-    }
-
-    /**
-     * @throws Exception
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Result contains no credentials
-     */
-    public function testStsIncomplete()
-    {
-        // Setup
-        Credentials::cancelMock();
-        $result = '{
-    "RequestId": "88FEA385-EF5D-4A8A-8C00-A07DAE3BFD44",
-    "AssumedRoleUser": {
-        "AssumedRoleId": "********************",
-        "Arn": "********************"
-    },
-    "Credentials": {
-        "AccessKeyId": "STS.**************",
-        "Expiration": "2020-02-25T03:56:19Z",
-        "SecurityToken": "**************"
-    }
-}';
-        Credentials::mockResponse(200, [], $result);
-        $credential = new RamRoleArnCredential([
-            'access_key_id'     => 'access_key_id2',
-            'access_key_secret' => 'access_key_secret2',
-            'role_arn'          => 'role_arn2',
-            'role_session_name' => 'role_session_name2',
-            'policy'            => '',
-        ]);
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from RamRoleArn result:{"RequestId":"88FEA385-EF5D-4A8A-8C00-A07DAE3BFD44","AssumedRoleUser":{"AssumedRoleId":"********************","Arn":"********************"},"Credentials":{"AccessKeyId":"STS.**************","Expiration":"2020-02-25T03:56:19Z","SecurityToken":"**************"}}');
-        // Test
-        self::assertEquals('TMPSK.**************', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage access_key_id cannot be empty
-     */
-    public function testAccessKeyIdEmpty()
-    {
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeyId cannot be empty');
-        // Test
-        new RamRoleArnCredential([
-            'access_key_id'     => '',
-            'access_key_secret' => 'access_key_secret',
-            'role_arn'          => 'role_arn',
-            'role_session_name' => 'role_session_name',
-            'policy'            => '',
-        ]);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage Missing required access_key_secret option in config for ram_role_arn
-     */
-    public function testAccessKeyIdFormat()
-    {
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('Missing required access_key_secret option in config for ram_role_arn');
-        // Test
-        new RamRoleArnCredential([
-            'access_key_id'     => 'access_key_id',
-            'access_key_secret' => null,
-            'role_arn'          => 'role_arn',
-            'role_session_name' => 'role_session_name',
-            'policy'            => '',
-        ]);
-    }
-
-     /**
-     * @before
-     */
-    protected function initialize()
-    {
-        // Setup
-        Credentials::cancelMock();
-        $this->credential = new  RamRoleArnCredential([
-            'access_key_id'     => 'access_key_id',
-            'access_key_secret' => 'access_key_secret',
-            'role_arn'          => 'role_arn',
-            'role_session_name' => 'role_session_name',
-            'policy'            => '',
-        ]);
-    }
-}
diff --git a/tests/Unit/Request/RequestTest.php b/tests/Unit/Request/RequestTest.php
index 0e61c1c..7490b6b 100644
--- a/tests/Unit/Request/RequestTest.php
+++ b/tests/Unit/Request/RequestTest.php
@@ -7,11 +7,6 @@
 use PHPUnit\Framework\TestCase;
 use InvalidArgumentException;
 
-/**
- * Class RequestTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Request
- */
 class RequestTest extends TestCase
 {
 
diff --git a/tests/Unit/RsaKeyPairCredentialTest.php b/tests/Unit/RsaKeyPairCredentialTest.php
deleted file mode 100644
index f174c7d..0000000
--- a/tests/Unit/RsaKeyPairCredentialTest.php
+++ /dev/null
@@ -1,238 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\Credentials;
-use AlibabaCloud\Credentials\Utils\Helper;
-use AlibabaCloud\Credentials\RsaKeyPairCredential;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use AlibabaCloud\Credentials\Tests\Unit\Ini\VirtualRsaKeyPairCredential;
-use Exception;
-use RuntimeException;
-use InvalidArgumentException;
-use GuzzleHttp\Exception\GuzzleException;
-use PHPUnit\Framework\TestCase;
-
-class RsaKeyPairCredentialTest extends TestCase
-{
-    /**
-     * @var RsaKeyPairCredential
-     */
-    protected $credential;
-
-    public static function testNotFoundFile()
-    {
-        // Setup
-        $publicKeyId = 'PUBLIC_KEY_ID';
-
-        if (Helper::isWindows()) {
-            $privateKeyFile = 'C:\\projects\\no.no';
-        } else {
-            $privateKeyFile = '/a/b/no.no';
-        }
-
-        // Test
-        try {
-            new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-        } catch (Exception $e) {
-            self::assertEquals(
-                strtolower("file_get_contents($privateKeyFile): failed to open stream: No such file or directory"),
-                strtolower($e->getMessage())
-            );
-        }
-    }
-
-    public static function testOpenBasedirException()
-    {
-        // Setup
-        $publicKeyId = 'PUBLIC_KEY_ID';
-        if (Helper::isWindows()) {
-            $dirs           = 'C:\\projects;C:\\Users';
-            $privateKeyFile = 'C:\\AlibabaCloud\\no.no';
-        } else {
-            $dirs           = 'vfs://AlibabaCloud:/home:/Users:/private:/a/b';
-            $privateKeyFile = '/dev/no.no';
-        }
-
-        // Test
-        ini_set('open_basedir', $dirs);
-        try {
-            new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-        } catch (Exception $e) {
-            self::assertEquals(
-                "file_get_contents(): open_basedir restriction in effect. File($privateKeyFile) is not within the allowed path(s): ($dirs)",
-                $e->getMessage()
-            );
-        }
-        ini_set('open_basedir', null);
-    }
-
-    public function testConstruct()
-    {
-        // Setup
-        $publicKeyId    = 'public_key_id';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-
-        // Test
-        $credential = new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-
-        // Assert
-        $this->assertEquals($publicKeyId, $credential->getPublicKeyId());
-        $this->assertStringEqualsFile($privateKeyFile, $credential->getPrivateKey());
-        $this->assertEquals(
-            "publicKeyId#$publicKeyId",
-            (string)$credential
-        );
-        $this->assertEquals([], $credential->getConfig());
-        $this->assertInstanceOf(ShaHmac1Signature::class, $credential->getSignature());
-        $this->assertEquals($publicKeyId, $credential->getOriginalAccessKeyId());
-        $this->assertNotEmpty($credential->getOriginalAccessKeySecret());
-    }
-
-    /**
-     * @throws Exception
-     * @throws GuzzleException
-     */
-    public function testSts()
-    {
-        $publicKeyId    = 'public_key_id';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-        $result = '{
-    "RequestId": "F702286E-F231-4F40-BB86-XXXXXX",
-    "SessionAccessKey": {
-        "SessionAccessKeyId": "TMPSK.**************",
-        "Expiration": "2049-02-19T07:02:36.225Z",
-        "SessionAccessKeySecret": "**************"
-    }
-}';
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-        Credentials::mockResponse(200, [], $result);
-
-        // Test
-        $credential = new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-
-        self::assertEquals('TMPSK.**************', $credential->getAccessKeyId());
-        self::assertEquals('**************', $credential->getAccessKeySecret());
-        self::assertEquals('', $credential->getSecurityToken());
-        self::assertEquals(strtotime('2049-02-19T07:02:36.225Z'), $credential->getExpiration());
-
-        Credentials::mockResponse(200, [], $result);
-        $credentialModel = $this->credential->getCredential();
-        $this->assertEquals('TMPSK.**************', $credentialModel->getAccessKeyId());
-        $this->assertEquals('**************', $credentialModel->getAccessKeySecret());
-        self::assertEquals('', $credentialModel->getSecurityToken());
-        $this->assertEquals('rsa_key_pair', $credentialModel->getType());
-    }
-
-    /**
-     * @throws Exception
-     * @throws GuzzleException
-     * @expectedException \RuntimeException
-     * @expectedExceptionMessage Result contains no credentials
-     */
-    public function testStsIncomplete()
-    {
-        // Setup
-        $publicKeyId    = 'public_key_id_new';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-        Credentials::cancelMock();
-        $result = '{
-    "RequestId": "F702286E-F231-4F40-BB86-XXXXXX",
-    "SessionAccessKey": {
-        "SessionAccessKeyId": "TMPSK.**************",
-        "Expiration": "2023-02-19T07:02:36.225Z"
-    }
-}';
-        Credentials::mockResponse(200, [], $result);
-
-        $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('Error retrieving credentials from RsaKeyPair result:{"RequestId":"F702286E-F231-4F40-BB86-XXXXXX","SessionAccessKey":{"SessionAccessKeyId":"TMPSK.**************","Expiration":"2023-02-19T07:02:36.225Z"}}');
-
-        $credential = new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-
-        // Test
-        self::assertEquals('TMPSK.**************', $credential->getAccessKeyId());
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage public_key_id cannot be empty
-     */
-    public function testPublicKeyIdEmpty()
-    {
-        // Setup
-        $publicKeyId    = '';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('publicKeyId cannot be empty');
-        // Test
-        new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage public_key_id must be a string
-     */
-    public function testPublicKeyIdFormat()
-    {
-        // Setup
-        $publicKeyId    = null;
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('publicKeyId must be a string');
-        // Test
-        new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage private_key_file cannot be empty
-     */
-    public function testPrivateKeyFileEmpty()
-    {
-        // Setup
-        $publicKeyId    = 'publicKeyId';
-        $privateKeyFile = '';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('privateKeyFile cannot be empty');
-        // Test
-        new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage private_key_file must be a string
-     */
-    public function testPrivateKeyFileFormat()
-    {
-        // Setup
-        $publicKeyId    = 'publicKeyId';
-        $privateKeyFile = null;
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('privateKeyFile must be a string');
-        // Test
-        new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-    }
-
-     /**
-     * @before
-     */
-    protected function initialize()
-    {
-        // Setup
-        Credentials::cancelMock();
-
-        // Setup
-        $publicKeyId    = 'public_key_id';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-
-        // Test
-        $this->credential = new RsaKeyPairCredential($publicKeyId, $privateKeyFile);
-    }
-}
diff --git a/tests/Unit/Signature/BearerTokenSignatureTest.php b/tests/Unit/Signature/BearerTokenSignatureTest.php
deleted file mode 100644
index cf31e73..0000000
--- a/tests/Unit/Signature/BearerTokenSignatureTest.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit\Signature;
-
-use AlibabaCloud\Credentials\Signature\BearerTokenSignature;
-use PHPUnit\Framework\TestCase;
-
-/**
- * Class BearerTokenSignatureTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Signature
- */
-class BearerTokenSignatureTest extends TestCase
-{
-    public function testBearerTokenSignature()
-    {
-        // Setup
-        $string          = 'this is a BearToken test.';
-        $accessKeySecret = 'accessKeySecret';
-        $expected        = null;
-
-        // Test
-        $signature = new BearerTokenSignature();
-
-        // Assert
-        static::assertInstanceOf(BearerTokenSignature::class, $signature);
-        static::assertEquals($expected, $signature->sign($string, $accessKeySecret));
-        static::assertEquals('', $signature->getMethod());
-        static::assertEquals('1.0', $signature->getVersion());
-        static::assertEquals('BEARERTOKEN', $signature->getType());
-    }
-}
diff --git a/tests/Unit/Signature/ShaHmac1SignatureTest.php b/tests/Unit/Signature/ShaHmac1SignatureTest.php
deleted file mode 100644
index 66a5a0d..0000000
--- a/tests/Unit/Signature/ShaHmac1SignatureTest.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit\Signature;
-
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use PHPUnit\Framework\TestCase;
-
-/**
- * Class ShaHmac1SignatureTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Signature
- */
-class ShaHmac1SignatureTest extends TestCase
-{
-    public function testShaHmac1Signature()
-    {
-        // Setup
-        $string          = 'this is a ShaHmac1 test.';
-        $accessKeySecret = 'accessKeySecret';
-        $expected        = 'PEr0Vp78B4Fslzf54dzdXD4Qt3E=';
-
-        // Test
-        $signature = new ShaHmac1Signature();
-
-        // Assert
-        static::assertInstanceOf(ShaHmac1Signature::class, $signature);
-        static::assertEquals('HMAC-SHA1', $signature->getMethod());
-        static::assertEquals('1.0', $signature->getVersion());
-        static::assertEquals('', $signature->getType());
-        static::assertEquals($expected, $signature->sign($string, $accessKeySecret));
-    }
-}
diff --git a/tests/Unit/Signature/ShaHmac256SignatureTest.php b/tests/Unit/Signature/ShaHmac256SignatureTest.php
deleted file mode 100644
index 8ba521a..0000000
--- a/tests/Unit/Signature/ShaHmac256SignatureTest.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit\Signature;
-
-use AlibabaCloud\Credentials\Signature\ShaHmac256Signature;
-use PHPUnit\Framework\TestCase;
-
-/**
- * Class ShaHmac256SignatureTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Signature
- */
-class ShaHmac256SignatureTest extends TestCase
-{
-    public function testShaHmac256Signature()
-    {
-        // Setup
-        $string          = 'this is a ShaHmac256 test.';
-        $accessKeySecret = 'accessKeySecret';
-        $expected        = 'v1Kg2HYGWRaLsRu2iXkAZu3R7vDh0txyYHs48HVxkeA=';
-
-        // Test
-        $signature = new ShaHmac256Signature();
-
-        // Assert
-        static::assertInstanceOf(ShaHmac256Signature::class, $signature);
-        static::assertEquals('HMAC-SHA256', $signature->getMethod());
-        static::assertEquals('1.0', $signature->getVersion());
-        static::assertEquals('', $signature->getType());
-        static::assertEquals(
-            $expected,
-            $signature->sign($string, $accessKeySecret)
-        );
-    }
-}
diff --git a/tests/Unit/Signature/ShaHmac256WithRsaSignatureTest.php b/tests/Unit/Signature/ShaHmac256WithRsaSignatureTest.php
deleted file mode 100644
index c800d5e..0000000
--- a/tests/Unit/Signature/ShaHmac256WithRsaSignatureTest.php
+++ /dev/null
@@ -1,63 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit\Signature;
-
-use AlibabaCloud\Credentials\Signature\ShaHmac256WithRsaSignature;
-use AlibabaCloud\Credentials\Tests\Unit\Ini\VirtualRsaKeyPairCredential;
-use PHPUnit\Framework\TestCase;
-use InvalidArgumentException;
-
-/**
- * Class ShaHmac256WithRsaSignatureTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Signature
- */
-class ShaHmac256WithRsaSignatureTest extends TestCase
-{
-    public function testShaHmac256Signature()
-    {
-        // Setup
-        $string         = 'string';
-        $privateKeyFile = VirtualRsaKeyPairCredential::privateKeyFileUrl();
-        $expected       =
-            'gjWgwRf/BjOYbjrPleU9qzNrZXNO+Z9aiwxmbBj1TPF2/PEOjBy5/YSk+GfL2GGg5pkupzrKiG+4FQ4r+EjeQcdByRDv1x1eBrQHwAbieKmjLc1++vJWQQpSKJykMl5dRzADUwsXYzvCCvVCIXjYZJNsrdt/0G+gaRVX7oelAX+d1MiTjRam7Ugzxcr1nELz2dc3DOyhXqCw8loNtsFVNcrDC5B/urx4eYdAFWRYVbORdTTgPdOF/gNJOWPqQgvFQsICJpScwIXP2OntCjYj8EBGNafBK3bCe4jxHwtxBA72PmuJ/ZHxUqSstwbcVk5S40PlRIhqtrfn6ajxYk41SQ==';
-
-        // Test
-        $signature = new ShaHmac256WithRsaSignature();
-
-        // Assert
-        static::assertInstanceOf(ShaHmac256WithRsaSignature::class, $signature);
-        static::assertEquals('SHA256withRSA', $signature->getMethod());
-        static::assertEquals('1.0', $signature->getVersion());
-        static::assertEquals('PRIVATEKEY', $signature->getType());
-        static::assertEquals(
-            $expected,
-            $signature->sign($string, \file_get_contents($privateKeyFile))
-        );
-    }
-
-    /**
-     * @expectedException        \InvalidArgumentException
-     * @expectedExceptionCode    0
-     * @expectedExceptionMessage openssl_sign(): supplied key param cannot be coerced into a private key
-     */
-    public function testShaHmac256SignatureBadPrivateKey()
-    {
-        // Setup
-        $string         = 'string';
-        $privateKeyFile = VirtualRsaKeyPairCredential::badPrivateKey();
-
-        $this->expectException(InvalidArgumentException::class);
-        if (method_exists($this, 'expectExceptionMessageMatches')) {
-            $this->expectExceptionMessageMatches('/supplied key param cannot be coerced into a private key/i');
-        } elseif (method_exists($this, 'expectExceptionMessageRegExp')) {
-            $this->expectExceptionMessageRegExp('/supplied key param cannot be coerced into a private key/i');
-        }
-
-        // Test
-        $signature = new ShaHmac256WithRsaSignature();
-
-        // Assert
-        $signature->sign($string, \file_get_contents($privateKeyFile));
-    }
-}
diff --git a/tests/Unit/StsCredentialTest.php b/tests/Unit/StsCredentialTest.php
deleted file mode 100644
index 67c92c0..0000000
--- a/tests/Unit/StsCredentialTest.php
+++ /dev/null
@@ -1,109 +0,0 @@
-<?php
-
-namespace AlibabaCloud\Credentials\Tests\Unit;
-
-use AlibabaCloud\Credentials\StsCredential;
-use AlibabaCloud\Credentials\Signature\ShaHmac1Signature;
-use PHPUnit\Framework\TestCase;
-use InvalidArgumentException;
-
-class StsCredentialTest extends TestCase
-{
-    public function testConstruct()
-    {
-        // Setup
-        $accessKeyId     = 'accessKeyId';
-        $accessKeySecret = 'accessKeySecret';
-        $securityToken   = 'securityToken';
-        $expiration      = time();
-
-        // Test
-        $credential = new StsCredential($accessKeyId, $accessKeySecret, $expiration, $securityToken);
-
-        // Assert
-        $this->assertEquals($accessKeyId, $credential->getAccessKeyId());
-        $this->assertEquals($accessKeySecret, $credential->getAccessKeySecret());
-        $this->assertEquals($securityToken, $credential->getSecurityToken());
-        $this->assertEquals($expiration, $credential->getExpiration());
-        $this->assertInstanceOf(ShaHmac1Signature::class, $credential->getSignature());
-        $this->assertEquals(
-            "$accessKeyId#$accessKeySecret#$securityToken",
-            (string)$credential
-        );
-
-        $credentialModel = $credential->getCredential();
-        $this->assertEquals($accessKeyId, $credentialModel->getAccessKeyId());
-        $this->assertEquals($accessKeySecret, $credentialModel->getAccessKeySecret());
-        self::assertEquals($securityToken, $credentialModel->getSecurityToken());
-        $this->assertEquals('sts', $credentialModel->getType());
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage access_key_id cannot be empty
-     */
-    public function testAccessKeyIdEmpty()
-    {
-        // Setup
-        $accessKeyId     = '';
-        $accessKeySecret = 'accessKeySecret';
-        $securityToken   = 'securityToken';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeyId cannot be empty');
-
-        new StsCredential($accessKeyId, $accessKeySecret, $securityToken);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage access_key_id must be a string
-     */
-    public function testAccessKeyIdFormat()
-    {
-        // Setup
-        $accessKeyId     = null;
-        $accessKeySecret = 'accessKeySecret';
-        $securityToken   = 'securityToken';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeyId must be a string');
-
-        new StsCredential($accessKeyId, $accessKeySecret, $securityToken);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage access_key_secret cannot be empty
-     */
-    public function testAccessKeySecretEmpty()
-    {
-        // Setup
-        $accessKeyId     = 'accessKeyId';
-        $accessKeySecret = '';
-        $securityToken   = 'securityToken';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('accessKeySecret cannot be empty');
-
-        new StsCredential($accessKeyId, $accessKeySecret, $securityToken);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage access_key_secret must be a string
-     */
-    public function testAccessKeySecretFormat()
-    {
-        // Setup
-        $accessKeyId     = 'accessKeyId';
-        $accessKeySecret = null;
-        $securityToken   = 'securityToken';
-
-        $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionCode(0);
-        $this->expectExceptionMessage('accessKeySecret must be a string');
-
-        new StsCredential($accessKeyId, $accessKeySecret, $securityToken);
-    }
-}
diff --git a/tests/Unit/Utils/FilterTest.php b/tests/Unit/Utils/FilterTest.php
index 4ef7149..f50a95d 100644
--- a/tests/Unit/Utils/FilterTest.php
+++ b/tests/Unit/Utils/FilterTest.php
@@ -7,11 +7,6 @@
 use Exception;
 use PHPUnit\Framework\TestCase;
 
-/**
- * Class FilterTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit\Filter
- */
 class FilterTest extends TestCase
 {
     /**
diff --git a/tests/Unit/Utils/HelperTest.php b/tests/Unit/Utils/HelperTest.php
index bef8b55..8ebfbc2 100644
--- a/tests/Unit/Utils/HelperTest.php
+++ b/tests/Unit/Utils/HelperTest.php
@@ -7,12 +7,8 @@
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 use ReflectionException;
+use AlibabaCloud\Configure\Config;
 
-/**
- * Class HelperTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
 class HelperTest extends TestCase
 {
     public static function testDefault()
@@ -58,25 +54,25 @@ public static function testSwitch()
 
     public static function testString()
     {
-        putenv('STRING="Alibaba Cloud"');
-        self::assertEquals('"Alibaba Cloud"', getenv('STRING'));
-        self::assertEquals('Alibaba Cloud', Helper::env('STRING'));
+        putenv('STRING="Cloud"');
+        self::assertEquals('"Cloud"', getenv('STRING'));
+        self::assertEquals('Cloud', Helper::env('STRING'));
 
-        putenv('STRING="Alibaba Cloud');
-        self::assertEquals('"Alibaba Cloud', getenv('STRING'));
-        self::assertEquals('"Alibaba Cloud', Helper::env('STRING'));
+        putenv('STRING="Cloud');
+        self::assertEquals('"Cloud', getenv('STRING'));
+        self::assertEquals('"Cloud', Helper::env('STRING'));
     }
 
     public static function testEnvNotEmpty()
     {
-        self::assertFalse(Helper::envNotEmpty('ALIBABA_CLOUD_NOT_EXISTS'));
+        self::assertFalse(Helper::envNotEmpty(Config::ENV_PREFIX + 'NOT_EXISTS'));
     }
 
     public static function testEnvNotEmptyException()
     {
-        putenv('ALIBABA_CLOUD_NOT_EXISTS=');
+        putenv(Config::ENV_PREFIX + 'NOT_EXISTS=');
 
-        self::assertFalse(Helper::envNotEmpty('ALIBABA_CLOUD_NOT_EXISTS'));
+        self::assertFalse(Helper::envNotEmpty(Config::ENV_PREFIX + 'NOT_EXISTS'));
     }
 
     public static function testInOpenBaseDir()
@@ -86,11 +82,11 @@ public static function testInOpenBaseDir()
             ini_set('open_basedir', $dirs);
             self::assertEquals($dirs, ini_get('open_basedir'));
         } else {
-            $dirs = 'vfs://AlibabaCloud:/home:/Users:/private:/a/b';
+            $dirs = 'vfs://' . Config::KEY . ':/home:/Users:/private:/a/b';
             ini_set('open_basedir', $dirs);
             self::assertEquals($dirs, ini_get('open_basedir'));
-            self::assertTrue(Helper::inOpenBasedir('/Users/alibabacloud'));
-            self::assertTrue(Helper::inOpenBasedir('/private/alibabacloud'));
+            self::assertTrue(Helper::inOpenBasedir('/Users/test'));
+            self::assertTrue(Helper::inOpenBasedir('/private/test'));
             self::assertFalse(Helper::inOpenBasedir('/no/permission'));
             self::assertFalse(Helper::inOpenBasedir('/a'));
             self::assertTrue(Helper::inOpenBasedir('/a/b/'));
@@ -142,11 +138,11 @@ public function testGetsHomeDirectoryForWindowsUser()
     {
         putenv('HOME=');
         putenv('HOMEDRIVE=C:');
-        putenv('HOMEPATH=\\Users\\Alibaba');
+        putenv('HOMEPATH=\\Users\\Test');
         $ref = new ReflectionClass(Helper::class);
         $method = $ref->getMethod('getHomeDirectory');
         $method->setAccessible(true);
-        $this->assertEquals('C:\\Users\\Alibaba', $method->invoke(null));
+        $this->assertEquals('C:\\Users\\Test', $method->invoke(null));
     }
 
     /**
@@ -176,11 +172,12 @@ public function testSnakeToCamelCase()
 
     public function testGetUserAgent()
     {
-        self::assertStringStartsWith('AlibabaCloud', Helper::getUserAgent());
+        self::assertStringStartsWith(Config::KEY, Helper::getUserAgent());
         self::assertStringEndsWith('Credentials/' . Credential::VERSION . ' TeaDSL/1', Helper::getUserAgent());
     }
 
-    public function testUnsetReturnNull() {
+    public function testUnsetReturnNull()
+    {
         $params = [
             'key' => 'value',
             'test' => '',
diff --git a/tests/Unit/Utils/MockTraitTest.php b/tests/Unit/Utils/MockTraitTest.php
index 49178b3..273e45d 100644
--- a/tests/Unit/Utils/MockTraitTest.php
+++ b/tests/Unit/Utils/MockTraitTest.php
@@ -7,11 +7,6 @@
 use GuzzleHttp\Psr7\Request;
 use PHPUnit\Framework\TestCase;
 
-/**
- * Class MockTraitTest
- *
- * @package AlibabaCloud\Credentials\Tests\Unit
- */
 class MockTraitTest extends TestCase
 {
      /**