do you have C# example? how to verify digital-signatures in C# what do you think about this ?

[nyghtrocker]

`public bool VerifySignature(string encodedPublicKey, string signature, string payload)
{
byte[] decodedPublicKey = Convert.FromBase64String(encodedPublicKey);
var decodedSignature = Convert.FromBase64String(signature);
var decodedPayload = Convert.FromBase64String(payload);

        AsymmetricKeyParameter asymmetricKeyParameter = PublicKeyFactory.CreateKey(decodedPublicKey);
        RsaKeyParameters rsaKeyParameters = (RsaKeyParameters)asymmetricKeyParameter;
        RSAParameters rsaParameters = new RSAParameters
        {
            Modulus = rsaKeyParameters.Modulus.ToByteArrayUnsigned(),
            Exponent = rsaKeyParameters.Exponent.ToByteArrayUnsigned()
        };
       
        RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
        rsa.ImportParameters(rsaParameters);

        SHA256 sha256 = SHA256.Create();
        byte[] hash = sha256.ComputeHash(decodedPayload);

        RSAPKCS1SignatureDeformatter rsaDeformatter = new RSAPKCS1SignatureDeformatter(rsa);
        rsaDeformatter.SetHashAlgorithm("SHA256");
        if (!rsaDeformatter.VerifySignature(hash, decodedSignature))
            throw new ApplicationException(string.Format("Invalid signature"));            
        return true;
    }`