Add serde to Public and Private

This allows serialisation and deserialisation of the Public and Private
structures, which is required for storing these in many database or
serialised forms.

Signed-off-by: William Brown <william.brown@suse.com>

Author: Firstyear

.codespellrc

@@ -1,3 +1,3 @@
 [codespell]
 skip = .git,target,Cargo.lock
-ignore-words-list = acsend,crate,keypair,daa
+ignore-words-list = acsend,crate,keypair,daa,de,ser

tss-esapi/Cargo.toml

@@ -37,6 +37,7 @@ paste = "1.0.14"
 [dev-dependencies]
 env_logger = "0.9.0"
 sha2 = "0.10.1"
+serde_json = "^1.0.108"
 
 [build-dependencies]
 semver = "1.0.7"

tss-esapi/src/structures/buffers/private.rs

@@ -2,8 +2,34 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use crate::traits::impl_mu_standard;
+use crate::traits::{Marshall, UnMarshall};
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use tss_esapi_sys::_PRIVATE;
 
 buffer_type!(Private, ::std::mem::size_of::<_PRIVATE>(), TPM2B_PRIVATE);
 
 impl_mu_standard!(Private, TPM2B_PRIVATE);
+
+impl Serialize for Private {
+    /// Serialise the [Private] data into it's bytes representation of the TCG
+    /// TPM2B_PRIVATE structure.
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let bytes = self.marshall().map_err(serde::ser::Error::custom)?;
+        serializer.serialize_bytes(&bytes)
+    }
+}
+
+impl<'de> Deserialize<'de> for Private {
+    /// Deserialise the [Private] data from it's bytes representation of the TCG
+    /// TPM2B_PRIVATE structure.
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let bytes = <Vec<u8>>::deserialize(deserializer)?;
+        Self::unmarshall(&bytes).map_err(serde::de::Error::custom)
+    }
+}

tss-esapi/src/structures/tagged/public.rs

@@ -8,7 +8,7 @@ use crate::{
     attributes::ObjectAttributes,
     interface_types::algorithm::{HashingAlgorithm, PublicAlgorithm},
     structures::{Digest, EccPoint, PublicKeyRsa, SymmetricCipherParameters},
-    traits::{impl_mu_standard, Marshall},
+    traits::{impl_mu_standard, Marshall, UnMarshall},
     tss2_esys::{TPM2B_PUBLIC, TPMT_PUBLIC},
     Error, Result, ReturnCode, WrapperErrorKind,
 };
@@ -18,6 +18,7 @@ use keyed_hash::PublicKeyedHashParameters;
 use rsa::PublicRsaParameters;
 
 use log::error;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use std::convert::{TryFrom, TryInto};
 use tss_esapi_sys::{TPMU_PUBLIC_ID, TPMU_PUBLIC_PARMS};
 
@@ -493,6 +494,30 @@ impl TryFrom<TPMT_PUBLIC> for Public {
 
 impl_mu_standard!(Public, TPMT_PUBLIC);
 
+impl Serialize for Public {
+    /// Serialise the [Public] data into it's bytes representation of the TCG
+    /// TPMT_PUBLIC structure.
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let bytes = self.marshall().map_err(serde::ser::Error::custom)?;
+        serializer.serialize_bytes(&bytes)
+    }
+}
+
+impl<'de> Deserialize<'de> for Public {
+    /// Deserialise the [Public] data from it's bytes representation of the TCG
+    /// TPMT_PUBLIC structure.
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let bytes = <Vec<u8>>::deserialize(deserializer)?;
+        Self::unmarshall(&bytes).map_err(serde::de::Error::custom)
+    }
+}
+
 impl TryFrom<TPM2B_PUBLIC> for Public {
     type Error = Error;
 

tss-esapi/tests/integration_tests/common/mod.rs

@@ -32,11 +32,13 @@ use tss_esapi::{
 };
 
 mod marshall;
+mod serde;
 mod tpm2b_types_equality_checks;
 mod tpma_types_equality_checks;
 mod tpml_types_equality_checks;
 mod tpms_types_equality_checks;
 mod tpmt_types_equality_checks;
+pub use self::serde::*;
 pub use marshall::*;
 pub use tpm2b_types_equality_checks::*;
 pub use tpma_types_equality_checks::*;

tss-esapi/tests/integration_tests/common/serde.rs

@@ -0,0 +1,16 @@
+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+use serde::{de::DeserializeOwned, Serialize};
+use tss_esapi::traits::{Marshall, UnMarshall};
+
+pub fn check_serialise_deserialise<
+    T: Serialize + DeserializeOwned + Marshall + UnMarshall + Eq + std::fmt::Debug,
+>(
+    val: &T,
+) {
+    let json = serde_json::to_vec(val).expect("Failed to serialise value");
+
+    let unmarshalled: T = serde_json::from_slice(&json).expect("Failed to deserialise");
+
+    assert_eq!(val, &unmarshalled);
+}

tss-esapi/tests/integration_tests/structures_tests/buffers_tests/private.rs

@@ -11,6 +11,13 @@ fn marshall_unmarshall() {
     crate::common::check_marshall_unmarshall(&private);
 }
 
+#[test]
+fn serialise_deserialise() {
+    crate::common::check_serialise_deserialise(&Private::default());
+    let private = Private::try_from([0xff; 100].to_vec()).unwrap();
+    crate::common::check_serialise_deserialise(&private);
+}
+
 #[test]
 fn marshall_unmarshall_offset() {
     crate::common::check_marshall_unmarshall_offset(&Private::default());

tss-esapi/tests/integration_tests/structures_tests/tagged_tests/public.rs

@@ -14,6 +14,13 @@ fn marshall_unmarshall() {
         .for_each(crate::common::check_marshall_unmarshall);
 }
 
+#[test]
+fn serialise_deserialise() {
+    crate::common::publics()
+        .iter()
+        .for_each(crate::common::check_serialise_deserialise);
+}
+
 #[test]
 fn tpm2b_conversion() {
     crate::common::publics().iter().for_each(|public| {