Jose.EncryptionException: 'Unable to decrypt content or authentication tag do not match

[Dhazan1]

I'm encrypting, then immediately I'm decrypting, but I keep getting this error.
This is the link to the code write-up https://github.com/Dhazan1/JoseLibraryImplementationInAsp.net/tree/main

[dvsekhvalnov]

Thanks, i'll try to run soonish.

[Dhazan1]

Thanks, i'll try to run soonish.

Still awaiting your response

[dvsekhvalnov]

Hi @Dhazan1 , thanks for reminding me.

Are you sure that you are using correct P-256 curve key? Especially if private d param is really matching public x and y? because it is named kid by some reason in your sample.

When i replaced your key to other one, it perfectly working.

            var publicKey = new Jwk(crv: "P-256",
                 x: "BHId3zoDv6pDgOUh8rKdloUZ0YumRTcaVDCppUPoYgk",
                 y: "g3QIDhaWEksYtZ9OWjNHn9a6-i_P9o5_NrdISP0VWDU"
            );

            var privateKey = new Jwk(crv: "P-256",
                  x: "BHId3zoDv6pDgOUh8rKdloUZ0YumRTcaVDCppUPoYgk",
                  y: "g3QIDhaWEksYtZ9OWjNHn9a6-i_P9o5_NrdISP0VWDU",
                  d: "KpTnMOHEpskXvuXHFCfiRtGUHUZ9Dq5CCcZQ-19rYs4"
               );

            var payload = new Dictionary<string, object>()
                        {
                         {"pan","1234567891234567" },
                         {"exp","1223"}
                        };


            var plain = JsonConvert.SerializeObject(payload);

            Console.WriteLine(plain);

            var encryptedData1 = Jose.JWE.Encrypt(plain, new[] { new JweRecipient(JweAlgorithm.ECDH_ES, publicKey) }, encryption);

            Console.WriteLine(encryptedData1);

           var decryptedDataTest = JWE.Decrypt(encryptedData1, privateKey);

            Console.WriteLine(decryptedDataTest.Plaintext);