public string Decrypt(string message)
{
if (message.StartsWith("+OK "))
{
message = message.Substring(4);
}
else if (message.StartsWith("mcps "))
{
message = message.Substring(5);
}
else
{
return(message);
}
byte[] plainText;
byte[] cipherText;
if (message.StartsWith("*"))
{
cipherText = Convert.FromBase64String(message.Remove(0, 1));
plainText = CbcDecrypt(cipherText.Pad(BlockSize));
}
else
{
cipherText = FishBase64.Decode(_encoding.GetBytes(message));
plainText = EcbDecrypt(cipherText.Pad(BlockSize));
}
return(_encoding.GetString(plainText));
}
public string Encrypt(string message)
{
if (_mode == CipherMode.CBC)
{
byte[] enc = CbcEncrypt(_encoding.GetBytes(message).Pad(BlockSize));
return("+OK *" + Convert.ToBase64String(enc));
}
else
{
byte[] enc = EcbEncrypt(_encoding.GetBytes(message).Pad(BlockSize));
return("+OK " + _encoding.GetString(FishBase64.Encode(enc)));
}
}
