public static string DecryptThenMacWithAES(string key, string ciphertext)
{
return(Encoding.UTF8.GetString(DecryptThenMacWithAES(CryptManager.DecodeBase64ToBytes(key), CryptManager.DecodeBase64ToBytes(ciphertext), null)));
}
/// <summary>
/// Creates a Decryptor CryptoStream based on the AES 128 OFB algorithm.
/// </summary>
/// <param name="inputStream">The input stream.</param>
/// <param name="key">The Key.</param>
/// <param name="iv"></param>
/// <returns>the Decryptor CryptoStream</returns>
private static CryptoStream GetAES128DecryptorStream(Stream inputStream, string key, string iv)
{
// Pre: iv is a 16bytes base64 encoded string
return(CryptManager.Instance.GetAES128DecryptorStream(inputStream, CryptManager.DecodeBase64ToBytes(key),
CryptManager.DecodeBase64ToBytes(iv)));
}
public static string EncryptThenMacWithAES(string key, string plaintext)
{
string result = CryptManager.EncodeBase64(EncryptThenMacWithAES(CryptManager.DecodeBase64ToBytes(key), Encoding.UTF8.GetBytes(plaintext), null));
return(result);
}
