public override ICryptoTransform CreateEncryptor(byte[] key, byte[] iv)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (key.Length < KeySizeInBytes)
{
throw new ArgumentOutOfRangeException("key", "key must be at least 256 bits long");
}
return(base.CreateEncryptor(AesKw.Take(KeySizeInBytes, key), iv));
}
internal AesKwDecryptor(byte[] keyBytes, byte[] iv)
{
// Create the AES provider
_aes = AesKw.Create(keyBytes);
// Set the AES IV to Zeroes
var aesIv = new byte[_aes.BlockSize >> 3];
aesIv.Zero();
_aes.IV = aesIv;
// Remember the real IV
_iv = iv.Clone() as byte[];
}
