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pages/en/lb3/readmes/loopback-component-oauth2.md

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+# loopback-component-oauth2
+
+The LoopBack oAuth 2.0 component provides full integration between [OAuth 2.0](http://tools.ietf.org/html/rfc6749)
+and [LoopBack](http://loopback.io). It enables LoopBack applications to function
+as an oAuth 2.0 provider to authenticate and authorize client applications and/or
+resource owners (i.e. users) to access protected API endpoints.
+
+The oAuth 2.0 protocol implementation is based on [oauth2orize](https://github.com/jaredhanson/oauth2orize)
+and [passport](http://passportjs.org/). 
+
+See [LoopBack Documentation - OAuth 2.0 Component](http://loopback.io/doc/en/lb2/OAuth-2.0.html) for more information.
+
+## Install
+
+Install the component as usual:
+
+```
+$ npm install loopback-component-oauth2
+```
+
+## Use
+
+Use in an application as follows:
+
+```js
+var oauth2 = require('loopback-component-oauth2');
+
+var options = { 
+  dataSource: app.dataSources.db, // Data source for oAuth2 metadata persistence
+  loginPage: '/login', // The login page url
+  loginPath: '/login' // The login form processing url
+};
+
+oauth2.oAuth2Provider(
+  app, // The app instance
+  options // The options
+);
+```
+
+The app instance will be used to set up middleware and routes. The data source
+provides persistence for the oAuth 2.0 metadata models.
+
+For more information, see [OAuth 2.0](http://loopback.io/doc/en/lb2/OAuth-2.0.html) LoopBack component official documentation.
+
+## Example
+
+This [example](https://github.com/strongloop/strong-gateway) demonstrates
+how to implement an OAuth service provider, complete with protected API access.