public bool CheckSign(string message, string sign)
{
var rsa = new RSA();
rsa.CryptoKey.EncodeKeyFromString(CheckKey);
var hash = GetHash(message);
var decodedHash = rsa.Encode(StringToByteArray(sign));
decodedHash = decodedHash.Trim(hash.Length);
return hash.SequenceEqual(decodedHash);
}
