private Task <string> Decrypt(AuthResult aResult)
{
var jweHeader = Jose.JWT.Headers(aResult.JweToken);
if (!jweHeader.TryGetValue("alg", out var alg))
{
throw new Exception("Required Element Missing (JWE.alg)");
}
if (!jweHeader.TryGetValue("typ", out var typ))
{
throw new Exception("Required Element Missing (JWE.typ)");
}
if (!jweHeader.TryGetValue("enc", out var enc))
{
throw new Exception("Required Element Missing (JWE.enc)");
}
try
{
using var key = KeyStore.GetClientKey();
return(Task.FromResult(Jose.JWT.Decode(aResult.JweToken, key, JweAlgorithm.RSA_OAEP, JweEncryption.A256CBC_HS512)));
}
catch (Exception)
{
throw new Exception("The JWE Decode error");
}
}
public void CheckClientSignature()
{
var clientKey = KeyStore.GetClientKey();
var clientWallet = BlockChainAddress.Deserialize("12K5LnVWKCu9QGyB39uGAgVSAfBs33PKS96HSL93");
var scriptBuilder = new ScriptBuilder();
var inputScript = scriptBuilder.New()
.AddToStack(clientKey.GetSignature())
.AddToStack(clientKey.GetPublicKey())
.Build();
var outputScript = scriptBuilder.New()
.AddOperation(OpCodes.OP_DUP)
.AddOperation(OpCodes.OP_HASH160)
.AddToStack(clientWallet.PublicKeyHash)
.AddOperation(OpCodes.OP_EQUALVERIFY)
.AddOperation(OpCodes.OP_CHECKSIG)
.Build();
var serializedInputScript = inputScript.Serialize();
var serializedOutputScript = outputScript.Serialize();
var deserializedInputScript = Script.Deserialize(serializedInputScript);
var deserializedOutputScript = Script.Deserialize(serializedOutputScript);
var interpreter = new ScriptInterpreter();
bool isCorrect = interpreter.Check(deserializedInputScript, deserializedOutputScript);
Assert.IsTrue(isCorrect);
}
private Task <string> Sign(string data, string kid)
{
var extraHeaders = new Dictionary <string, object>
{
{ "typ", "JOSE" },
{ "kid", kid },
{ "iat", DateTime.UtcNow },
{ "cty", "JWE" }
};
using var key = KeyStore.GetClientKey();
return(Task.FromResult(Jose.JWT.Encode(data, key, JwsAlgorithm.RS256, extraHeaders: extraHeaders)));
}