private static void VerifyDecrypt(NistKnownAnswerTestVector vector)
{
var rijndael = new Rijndael(vector.Key);
int feedbackSize = vector.BitLength < 128 ? 8 : vector.BitLength;
var transform = RijndaelDecryptionTransformFactory.Create(rijndael, vector.CipherMode, vector.IV,
feedbackSize, PaddingMode.None);
byte[] output = new byte[vector.Ciphertext.Length];
transform.TransformBlock(vector.Ciphertext, 0, vector.Ciphertext.Length, output, 0);
AssertBytesEqual(vector.Plaintext, output, vector.BitLength);
}
/// <summary>
/// Creates a decryption transform that can be used by the .NET cryptography APIs.
/// </summary>
/// <param name="cipherMode">The mode if the cipher to use.</param>
/// <param name="initializationVector">An initialization vector (if used by the <paramref name="cipherMode"/>, or <see langword="null"/> if not used).</param>
/// <param name="feedbackSizeInBits">Size of the feedback register in bits for feedback modes.</param>
/// <param name="paddingMode">The style of padding to apply to the last block.</param>
/// <returns>An decryption transform that can be used by the .NET cryptography APIs.</returns>
public ICryptoTransform CreateDecryptor(CipherMode cipherMode, byte[] initializationVector,
int feedbackSizeInBits, PaddingMode paddingMode)
{
return(RijndaelDecryptionTransformFactory.Create(this, cipherMode, initializationVector, feedbackSizeInBits,
paddingMode));
}
