public static string Decrypt(string encryptedData)
{
try
{
byte[] inputArray = Convert.FromBase64String(encryptedData);
SecurityCodecs codec = new SecurityCodecs();
TripleDESCryptoServiceProvider provider = codec.DES3Provider();
ICryptoTransform cTransform = provider.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
provider.Clear();
provider.Dispose();
codec.Dispose();
return(UTF32Encoding.UTF32.GetString(resultArray));
}
catch { return(encryptedData); }
}
private void VerifySignatureInfo()
{
int ikid = 0;
if (!int.TryParse(_Envelope.kid, out ikid))
{
throw new ArgumentOutOfRangeException("Key ID should be a number more than 0, PassedVal:" + _Envelope.kid);
}
if (ikid > ConfigProvider.ConfigurationStore.LiveAuthKeyCount)
{
throw new ArgumentOutOfRangeException(string.Format("Key ID: {0}, is not configured properly or not loaded.", ikid));
}
_CurrentSecretKey = ConfigProvider.ConfigurationStore.LiveAuthKeys[ikid];
byte[] bKey = SOSCodecs.UTF8Encoder.GetBytes(_CurrentSecretKey + "JWTSig");
SHA256Managed SHAprovider = SecurityCodecs.SHA256CryptoProvider;
byte[] bCryptKey = SHAprovider.ComputeHash(bKey);
byte[] bCombined = SOSCodecs.UTF8Encoder.GetBytes(_RawToken.Envelope + "." + _RawToken.Claims);
SecurityCodecs codec = new SecurityCodecs();
HMACSHA256 HMACHACryptoProvider = codec.HMACSHA256Provider(bCryptKey);
_IsTokenValid = SOSCodecs.UrlEncode(HMACHACryptoProvider.ComputeHash(bCombined)) == _RawToken.Signature;
codec.Dispose();
SHAprovider.Clear();
SHAprovider.Dispose();
HMACHACryptoProvider.Clear();
HMACHACryptoProvider.Dispose();
}