/// <summary>
/// Decrypts a buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <returns>The decrypted buffer.</returns>
public byte[] Decrypt(byte[] buffer)
{
byte[] ret = new byte[buffer.Length];
switch (_algorithm)
{
case BlowfishAlgorithm.ECB:
Libeay32.CAST_ecb_encrypt(buffer, ret, _key, 0);
break;
case BlowfishAlgorithm.CBC:
Libeay32.CAST_cbc_encrypt(buffer, ret, buffer.Length, _key, _decryptIv, 0);
break;
case BlowfishAlgorithm.CFB64:
Libeay32.CAST_cfb64_encrypt(buffer, ret, buffer.Length, _key, _decryptIv, ref _decryptNum, 0);
break;
case BlowfishAlgorithm.OFB64:
Libeay32.CAST_ofb64_encrypt(buffer, ret, buffer.Length, _key, _decryptIv, out _decryptNum);
break;
}
return(ret);
}
/// <summary>
/// Sets the key for the cryptography.
/// </summary>
/// <param name="data">The key</param>
public void SetKey(byte[] data)
{
_encryptNum = 0;
_decryptNum = 0;
Libeay32.CAST_set_key(_key, data.Length, data);
}
