Issue 245: rsa-oaep-384|512

README.md

@@ -9,6 +9,8 @@ JWE JSON Serialization cross-tested with [JWCrypto](https://github.com/latchset/
 Library is fully FIPS compliant since v2.1
 
 ## Which version?
+- v5.1 support for experimental algorithms RSA-OAEP-384, RSA-OAEP-512
+
 - v5.0 brings Linux, OSX and FreeBSD compatibility for [ECDH encryption](#ecdh-es-and-ecdh-es-with-aes-key-wrap-key-management-family-of-algorithms) as long as managed `ECDsa` keys support. Fixes cross compatibility issues with encryption over NIST P-384, P-521 curves. And introduces new [security fixes and controls](#customizing-compression).
 
 - v4.1 added additional capabilities to manage runtime avaliable alg suite, see [Customizing library for security](#customizing-library-for-security). And also introduced default max limits for `PBKDF2` (`PBES2-*`) max iterations according to [OWASP PBKDF2 Recomendations](https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2).
@@ -78,7 +80,7 @@ AES Key Wrap implementation ideas and test data from http://www.cryptofreak.org/
 - NONE (unprotected) plain text algorithm without integrity protection
 
 **Encryption**
-- RSAES OAEP 256 (using SHA-256 and MGF1 with SHA-256) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
+- RSAES OAEP 256, 384, 512 (using SHA-256, 384, 512 and MGF1 with SHA-256, 384, 512) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - RSAES OAEP (using SHA-1 and MGF1 with SHA-1) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - RSAES-PKCS1-V1_5 encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - Direct symmetric key encryption with pre-shared key A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM and A256GCM
@@ -101,7 +103,7 @@ AES Key Wrap implementation ideas and test data from http://www.cryptofreak.org/
 - NONE (unprotected) plain text algorithm without integrity protection
 
 **Encryption**
-- RSAES OAEP 256 (using SHA-256 and MGF1 with SHA-256) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
+- RSAES OAEP 256, 384, 512 (using SHA-256, 384, 512 and MGF1 with SHA-256, 384, 512) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - RSAES OAEP (using SHA-1 and MGF1 with SHA-1) encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - RSAES-PKCS1-V1_5 encryption with A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM, A256GCM
 - Direct symmetric key encryption with pre-shared key A128CBC-HS256, A192CBC-HS384, A256CBC-HS512, A128GCM, A192GCM and A256GCM
@@ -302,7 +304,7 @@ Accepts `CngKey`, `ECDsa` and `Jwk` types of keys (see above).
 
 **NET40-NET45**:
 
-RSA-OAEP-256, RSA-OAEP and RSA1_5 key management requires `RSACryptoServiceProvider` (usually public) key of corresponding length.
+RSA-OAEP-256, RSA-OAEP-384, RSA-OAEP-512, RSA-OAEP and RSA1_5 key management requires `RSACryptoServiceProvider` (usually public) key of corresponding length.
 
 ```C#
 var payload = new Dictionary<string, object>()
@@ -317,7 +319,7 @@ string token = Jose.JWT.Encode(payload, publicKey, JweAlgorithm.RSA_OAEP, JweEnc
 ```
 
 **NETCORE:**
-RSA-OAEP-256, RSA-OAEP and RSA1_5 key management requires `RSA` (usually public) or `Jwk` key of type `RSA` of corresponding length.
+RSA-OAEP-256, RSA-OAEP-384, RSA-OAEP-512, RSA-OAEP and RSA1_5 key management requires `RSA` (usually public) or `Jwk` key of type `RSA` of corresponding length.
 
 ``` cs
 var payload = new Dictionary<string, object>()
@@ -587,7 +589,7 @@ string json = Jose.JWT.Decode(token, secretKey);
 string json = Jose.JWT.Decrypt(token, secretKey);
 ```
 
-**RS256, RS384, RS512**, **PS256, PS384, PS512** signatures and **RSA-OAEP-256**, **RSA-OAEP, RSA1_5** key management algorithms expects
+**RS256, RS384, RS512**, **PS256, PS384, PS512** signatures and **RSA-OAEP-256**, **RSA-OAEP-384**, **RSA-OAEP-512**, **RSA-OAEP, RSA1_5** key management algorithms expects
 
 **NET40-NET45**: `RSACryptoServiceProvider` as a key, public/private is asymmetric to encoding:
 

UnitTests/TestSuite.cs

@@ -958,6 +958,51 @@ public void Decrypt_RSA_OAEP_256_A256CBC_HS512()
             Assert.Equal(@"{""exp"":1392553211,""sub"":""alice"",""nbf"":1392552611,""aud"":[""https:\/\/app-one.com"",""https:\/\/app-two.com""],""iss"":""https:\/\/openid.net"",""jti"":""586dd129-a29f-49c8-9de7-454af1155e27"",""iat"":1392552611}", json);
         }
 
+        [Fact]
+        public void Decrypt_RSA_OAEP_256_A128GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.Ki1uPWs34nXxE2nGmie94nGkcl1KbJcutGIRL2x7025JXITQ905nGlMqPf4YjgzvJxj51oc0EARPfC6IrFVlefuJzeKbJgZNj0IBkIKL1UbxkP0PrCovuXOnQhfYbcbppC0uNA6SDdGUiCJZH9DNnEBjQcbUWmDAdLSmI0ZkBhYK7fsla7dITP6rcAPM8wQcN6JqcVFZ-s_-uP8B6o2ywkawdtTacsQq9UxJvJ5bKfXJSNT-0xZY5kevgUo7rbJIpzv6BpFsA4EduOVMGu9Y7Xu_4seNIHZQA4NEqTxtbwjuq1lUdkm6Bnkr7GSXJ8tRjoFRf6OD2aX-snFx6Zg-MA.ez2XiQxsD1dvkehk._UCAGhvkeUWHKNa5lHQZvPpvWyH7j4E6wPJFLeNIFe53WCWVBVqFPoBRa5SANLak2COOgF__KBezLp935hROEvmtgFqJ5adl9uF501fCN0Cq-53bZP5MjKP237fOcZYQrGcei2GRRG-vOMt--owVX0Wjyy4Jy0oLqf9-hHoImtyLTpM89nN1s3jKcpsMntIfiqespShHLehZ0zW4v9pzT0ScHmSdjSqsisqcA0Za71GzPRoNIq5BzCvIf0TR6Q.hm0FdUsB0iHd1yrJW4Omzg";
+
+            //when
+            string json = Jose.JWT.Decode(token, testSuiteUtils.PrivKey());
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert.Equal(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1730312729,""iss"":""https://openid.net"",""exp"":1730313329,""iat"":1730312729,""jti"":""d8915fdb-8985-4c86-ae8d-28567016f623""}", json);            
+        }
+
+        [Fact]
+        public void Decrypt_RSA_OAEP_384_A192GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMTkyR0NNIiwiYWxnIjoiUlNBLU9BRVAtMzg0In0.pHwaRvG-WVUQtofFUwjedVIY_MxZs8V3ulf-46pFSAKqyERjJF0Za-LoDqN_EvMMwJp4TJ2JgEFHk9vLoThh-7EtJ3noaLaDxTXbt38slZ6xw1J-dziSUKXaiJstUiGLuJAK5liKwFWdqNtolBG0plEc2vvuROu7xUNoFuwb286992sKOAQb_1CFomDk5QuaiTN8pDwtQDLt8UsU5Gurml1U9bdU08FnH0PYIZlyVxKDL7a_fAfG-4o9_S__p8xLpYfp0aKX4MMbHSZcnMgqiwbfx_PiWQLhTYWeqf8XNNEYnGdv_QHK11FAd2NnT_RS028WJkf9W8veJTc-UUujjg.yej5UbPyU3A9gQD2.euXP6xG2-cLGJ0rTTjhwbeUX-qUKgT0Rr5JmtwDtGpZG8LyUpTpYhhLLcDTMtiUd0l0GeJPRzeApt5XTy-2RgpS-vcTn0b4t2xH27GPtN5Jvvsc-0rJlSbmptIE3QImrbckEXnwNCbz0qt95wPFSde04UzRWsna-LaSQ6se_pXbfga2kn5TiZ6ZKWh6fcfV6WIY3DtcWY1GCwdX2VW1vrqp-EQbWrOKqZp8Zx6BLwo521SPFg36EnJZWopoQBA.ZAC9GsPtN4P_ZhEKU1Hnpg";
+
+            //when
+            string json = Jose.JWT.Decode(token, testSuiteUtils.PrivKey());
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert.Equal(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1729866729,""iss"":""https://openid.net"",""exp"":1729867329,""iat"":1729866729,""jti"":""da2aa440-2923-4501-b169-04fe0904da4d""}", json);            
+        }
+
+        [Fact]
+        public void Decrypt_RSA_OAEP_512_A256GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMjU2R0NNIiwiYWxnIjoiUlNBLU9BRVAtNTEyIn0.Xti41IW1gNT9RqV2Eah4v8ylTP_E1DOjniWw9EJbEHTWzAjXeQ7sWdHLgH_h7G6xNhppLziGbsSZeqBcB_r-jkRXkSpP-kUyKp8QddvXCgUHHgme39LnnNjZXQ6KHBFiM0F0zQp3DJhxBe0lFEezrW3oSjusX43ybsTx3OqKWpp1TwhLyiGtjrKP82b2KcPS8XHT5mOP-_-KFKqOtut3m4jpLO6xYTClP-HZFtTHTz-CrK1y5XisDez-hk9LwzwJu0G-MFL5mNtWL24yeskbD2JWXzOHpkywiZ-pUU_BkfGqCHJnNGlbbX19xEHpd4a4XkPI_IatFX7QNCZOfRoiSw.mftbPhWtNUuxaRO_.GQPlZZruXeXEWeYu6QtCbu0i2bXBWThic-5VjVlRa2hu_ZJm1X4yUmmLdIsc8AE0F28dxbgvAI6HxTwVJkihPT_n5EF8zMdUPsTOMmxQOqfyRWgNX1WOvFgtsf8D1AlQ0Ukf0Pyt57nb-0ha6x5Bj9jMUmGQNfL98bDzNYrR-Y-cHIRfXzbyXw3u5f4qdczmdsNgWJ7ZQSm-4Rc8QSCP70bnISRPehhIOGYrKJenL9GaIUZa0lRrNv6YS17mhQ.6R_c3mLxSQ524Uk8usfNPg";
+
+            //when
+            string json = Jose.JWT.Decode(token, testSuiteUtils.PrivKey());
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert.Equal(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1729866729,""iss"":""https://openid.net"",""exp"":1729867329,""iat"":1729866729,""jti"":""b02ef943-92d6-4bf4-b7ac-18d2e122efa5""}", json);
+        }
+
         [Fact]
         public void Encrypt_RSA_OAEP_256_A128GCM()
         {
@@ -1007,6 +1052,55 @@ public void Encrypt_RSA_OAEP_256_A128GCM_JsonWebKey()
             Assert.Equal(json, Jose.JWT.Decode(token, testSuiteUtils.PrivKey()));
         }
 
+        [Fact]
+        public void Encrypt_RSA_OAEP_384_A192GCM()
+        {
+            //given
+            const string json = @"{""hello"": ""world""}";
+
+            //when
+            string token = Jose.JWT.Encode(json, testSuiteUtils.PubKey(), JweAlgorithm.RSA_OAEP_384, JweEncryption.A192GCM);
+
+            //then
+            Console.Out.WriteLine("RSA_OAEP_384_A192GCM={0}", token);
+
+            string[] parts = token.Split('.');
+
+            Assert.Equal(5, parts.Length); //Make sure 5 parts
+            Assert.Equal("eyJhbGciOiJSU0EtT0FFUC0zODQiLCJlbmMiOiJBMTkyR0NNIn0", parts[0]); //Header is non-encrypted and static text
+            Assert.Equal(342, parts[1].Length); //CEK size
+            Assert.Equal(16, parts[2].Length); //IV size
+            Assert.Equal(24, parts[3].Length); //cipher text size
+            Assert.Equal(22, parts[4].Length); //auth tag size
+
+            Assert.Equal(json, Jose.JWT.Decode(token, testSuiteUtils.PrivKey()));
+        }
+
+        [Fact]
+        public void Encrypt_RSA_OAEP_512_A256GCM()
+        {
+            //given
+            const string json = @"{""hello"": ""world""}";
+
+            //when
+            Jwk publicKey = new Jwk("AQAB", "qFZv0pea_jn5Mo4qEUmStuhlulso8n1inXbEotd_zTrQp9K0RK0hf7t0K4BjKVhaiqIam4tVVQvkmYeBeYr1MmnO_0N97dMBz_7fmvyv0hgHaBdQ5mR5u3LTlHo8tjRE7-GzZmGs6jMcyj7HbXobDPQJZpqNy6JjliDVXxW8nWJDetxGBlqmTj1E1fr2RCsZLreDOPSDIedG1upz9RraShsIDzeefOcKibcAaKeeVI3rkAU8_mOauLSXv37hlk0h6sStJb3qZQXyOUkVkjXIkhvNu_ve0v7LiLT4G_OxYGzpOQcCnimKdojzNP6GtVDaMPh-QkSJE32UCos9R3wI2Q");
+            string token = Jose.JWT.Encode(json, publicKey, JweAlgorithm.RSA_OAEP_512, JweEncryption.A256GCM);
+
+            //then
+            Console.Out.WriteLine("RSA_OAEP_512_A256GCM={0}", token);
+
+            string[] parts = token.Split('.');
+
+            Assert.Equal(5, parts.Length); //Make sure 5 parts
+            Assert.Equal("eyJhbGciOiJSU0EtT0FFUC01MTIiLCJlbmMiOiJBMjU2R0NNIn0", parts[0]); //Header is non-encrypted and static text
+            Assert.Equal(342, parts[1].Length); //CEK size
+            Assert.Equal(16, parts[2].Length); //IV size
+            Assert.Equal(24, parts[3].Length); //cipher text size
+            Assert.Equal(22, parts[4].Length); //auth tag size
+
+            Assert.Equal(json, Jose.JWT.Decode(token, testSuiteUtils.PrivKey()));
+        }
+
         [Fact]
         public void Encrypt_RSA_OAEP_256_A192GCM()
         {

UnitTestsNet40/TestSuite.cs

@@ -704,6 +704,51 @@ public void Decrypt_RSA_OAEP_256_A256CBC_HS512()
             Assert.That(json, Is.EqualTo(@"{""exp"":1392553211,""sub"":""alice"",""nbf"":1392552611,""aud"":[""https:\/\/app-one.com"",""https:\/\/app-two.com""],""iss"":""https:\/\/openid.net"",""jti"":""586dd129-a29f-49c8-9de7-454af1155e27"",""iat"":1392552611}"));
         }
 
+        [Test]
+        public void Decrypt_RSA_OAEP_256_A128GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMTI4R0NNIiwiYWxnIjoiUlNBLU9BRVAtMjU2In0.Ki1uPWs34nXxE2nGmie94nGkcl1KbJcutGIRL2x7025JXITQ905nGlMqPf4YjgzvJxj51oc0EARPfC6IrFVlefuJzeKbJgZNj0IBkIKL1UbxkP0PrCovuXOnQhfYbcbppC0uNA6SDdGUiCJZH9DNnEBjQcbUWmDAdLSmI0ZkBhYK7fsla7dITP6rcAPM8wQcN6JqcVFZ-s_-uP8B6o2ywkawdtTacsQq9UxJvJ5bKfXJSNT-0xZY5kevgUo7rbJIpzv6BpFsA4EduOVMGu9Y7Xu_4seNIHZQA4NEqTxtbwjuq1lUdkm6Bnkr7GSXJ8tRjoFRf6OD2aX-snFx6Zg-MA.ez2XiQxsD1dvkehk._UCAGhvkeUWHKNa5lHQZvPpvWyH7j4E6wPJFLeNIFe53WCWVBVqFPoBRa5SANLak2COOgF__KBezLp935hROEvmtgFqJ5adl9uF501fCN0Cq-53bZP5MjKP237fOcZYQrGcei2GRRG-vOMt--owVX0Wjyy4Jy0oLqf9-hHoImtyLTpM89nN1s3jKcpsMntIfiqespShHLehZ0zW4v9pzT0ScHmSdjSqsisqcA0Za71GzPRoNIq5BzCvIf0TR6Q.hm0FdUsB0iHd1yrJW4Omzg";
+
+            //when
+            string json = Jose.JWT.Decode(token, RsaKey.New(PrivKey().ExportParameters(true)));
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert.That(json,  Is.EqualTo(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1730312729,""iss"":""https://openid.net"",""exp"":1730313329,""iat"":1730312729,""jti"":""d8915fdb-8985-4c86-ae8d-28567016f623""}"));
+        }
+
+        [Test]
+        public void Decrypt_RSA_OAEP_384_A192GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMTkyR0NNIiwiYWxnIjoiUlNBLU9BRVAtMzg0In0.pHwaRvG-WVUQtofFUwjedVIY_MxZs8V3ulf-46pFSAKqyERjJF0Za-LoDqN_EvMMwJp4TJ2JgEFHk9vLoThh-7EtJ3noaLaDxTXbt38slZ6xw1J-dziSUKXaiJstUiGLuJAK5liKwFWdqNtolBG0plEc2vvuROu7xUNoFuwb286992sKOAQb_1CFomDk5QuaiTN8pDwtQDLt8UsU5Gurml1U9bdU08FnH0PYIZlyVxKDL7a_fAfG-4o9_S__p8xLpYfp0aKX4MMbHSZcnMgqiwbfx_PiWQLhTYWeqf8XNNEYnGdv_QHK11FAd2NnT_RS028WJkf9W8veJTc-UUujjg.yej5UbPyU3A9gQD2.euXP6xG2-cLGJ0rTTjhwbeUX-qUKgT0Rr5JmtwDtGpZG8LyUpTpYhhLLcDTMtiUd0l0GeJPRzeApt5XTy-2RgpS-vcTn0b4t2xH27GPtN5Jvvsc-0rJlSbmptIE3QImrbckEXnwNCbz0qt95wPFSde04UzRWsna-LaSQ6se_pXbfga2kn5TiZ6ZKWh6fcfV6WIY3DtcWY1GCwdX2VW1vrqp-EQbWrOKqZp8Zx6BLwo521SPFg36EnJZWopoQBA.ZAC9GsPtN4P_ZhEKU1Hnpg";
+
+            //when
+            string json = Jose.JWT.Decode(token, PrivKey());
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert. That(json, Is.EqualTo(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1729866729,""iss"":""https://openid.net"",""exp"":1729867329,""iat"":1729866729,""jti"":""da2aa440-2923-4501-b169-04fe0904da4d""}"));
+        }
+
+        [Test]
+        public void Decrypt_RSA_OAEP_512_A256GCM()
+        {
+            //given
+            const string token = "eyJlbmMiOiJBMjU2R0NNIiwiYWxnIjoiUlNBLU9BRVAtNTEyIn0.Xti41IW1gNT9RqV2Eah4v8ylTP_E1DOjniWw9EJbEHTWzAjXeQ7sWdHLgH_h7G6xNhppLziGbsSZeqBcB_r-jkRXkSpP-kUyKp8QddvXCgUHHgme39LnnNjZXQ6KHBFiM0F0zQp3DJhxBe0lFEezrW3oSjusX43ybsTx3OqKWpp1TwhLyiGtjrKP82b2KcPS8XHT5mOP-_-KFKqOtut3m4jpLO6xYTClP-HZFtTHTz-CrK1y5XisDez-hk9LwzwJu0G-MFL5mNtWL24yeskbD2JWXzOHpkywiZ-pUU_BkfGqCHJnNGlbbX19xEHpd4a4XkPI_IatFX7QNCZOfRoiSw.mftbPhWtNUuxaRO_.GQPlZZruXeXEWeYu6QtCbu0i2bXBWThic-5VjVlRa2hu_ZJm1X4yUmmLdIsc8AE0F28dxbgvAI6HxTwVJkihPT_n5EF8zMdUPsTOMmxQOqfyRWgNX1WOvFgtsf8D1AlQ0Ukf0Pyt57nb-0ha6x5Bj9jMUmGQNfL98bDzNYrR-Y-cHIRfXzbyXw3u5f4qdczmdsNgWJ7ZQSm-4Rc8QSCP70bnISRPehhIOGYrKJenL9GaIUZa0lRrNv6YS17mhQ.6R_c3mLxSQ524Uk8usfNPg";
+
+            //when
+            string json = Jose.JWT.Decode(token, PrivKey());
+
+            //then
+            Console.Out.WriteLine("json = {0}", json);
+
+            Assert.That(json, Is.EqualTo(@"{""sub"":""alice"",""aud"":[""https://app-one.com"",""https://app-two.com""],""nbf"":1729866729,""iss"":""https://openid.net"",""exp"":1729867329,""iat"":1729866729,""jti"":""b02ef943-92d6-4bf4-b7ac-18d2e122efa5""}"));
+        }
+
         [Test]
         public void Encrypt_RSA_OAEP_256_A128GCM()
         {
@@ -803,6 +848,54 @@ public void Encrypt_RSA_OAEP_256_A256GCM()
             Assert.That(Jose.JWT.Decode(token, RsaKey.New(PrivKey().ExportParameters(true))), Is.EqualTo(json), "Make sure we are consistent with ourselfs");
         }
 
+        [Test]
+        public void Encrypt_RSA_OAEP_384_A192GCM()
+        {
+            //given
+            const string json = @"{""hello"": ""world""}";
+
+            //when
+            string token = Jose.JWT.Encode(json, RsaKey.New(PubKey().ExportParameters(false)), JweAlgorithm.RSA_OAEP_384, JweEncryption.A192GCM);
+
+            //then
+            Console.Out.WriteLine("RSA_OAEP_384_A192GCM={0}", token);
+
+            string[] parts = token.Split('.');
+
+            Assert.That(parts.Length, Is.EqualTo(5)); //Make sure 5 parts
+            Assert.That(parts[0], Is.EqualTo("eyJhbGciOiJSU0EtT0FFUC0zODQiLCJlbmMiOiJBMTkyR0NNIn0")); //Header is non-encrypted and static text
+            Assert.That(parts[1].Length, Is.EqualTo(342)); //CEK size
+            Assert.That(parts[2].Length, Is.EqualTo(16)); //IV size
+            Assert.That(parts[3].Length, Is.EqualTo(24)); //cipher text size
+            Assert.That(parts[4].Length, Is.EqualTo(22)); //auth tag size
+
+            Assert.That(Jose.JWT.Decode(token, RsaKey.New(PrivKey().ExportParameters(true))), Is.EqualTo(json));
+        }
+
+        [Test]
+        public void Encrypt_RSA_OAEP_512_A256GCM()
+        {
+            //given
+            const string json = @"{""hello"": ""world""}";
+
+            //when            
+            string token = Jose.JWT.Encode(json, RsaKey.New(PubKey().ExportParameters(false)), JweAlgorithm.RSA_OAEP_512, JweEncryption.A256GCM);
+
+            //then
+            Console.Out.WriteLine("RSA_OAEP_512_A256GCM={0}", token);
+
+            string[] parts = token.Split('.');
+
+            Assert.That(parts.Length, Is.EqualTo(5)); //Make sure 5 parts
+            Assert.That(parts[0], Is.EqualTo("eyJhbGciOiJSU0EtT0FFUC01MTIiLCJlbmMiOiJBMjU2R0NNIn0")); //Header is non-encrypted and static text
+            Assert.That(parts[1].Length, Is.EqualTo(342)); //CEK size
+            Assert.That(parts[2].Length, Is.EqualTo(16)); //IV size
+            Assert.That(parts[3].Length, Is.EqualTo(24)); //cipher text size
+            Assert.That(parts[4].Length, Is.EqualTo(22)); //auth tag size
+
+            Assert.That(Jose.JWT.Decode(token, RsaKey.New(PrivKey().ExportParameters(true))), Is.EqualTo(json));
+        }
+
         [Test]
         public void Decrypt_RSA_1_5_A128CBC_HS256()
         {