/// <summary>
/// Gets the decrypting stream.
/// </summary>
/// <param name="output">The output.</param>
/// <returns></returns>
public override FinishingStream GetDecryptingStream(Stream output, Keyczar.KeyczarBase keyczar)
{
var alg = new AesManaged
{
Mode = GetMode(),
Key = AesKeyBytes,
Padding = PaddingMode.PKCS7,
BlockSize = BlockLength * 8
};
return(new DotNetSymmetricStream(alg, output, HmacKey.Maybe(h => h.HashLength, () => 0), encrypt: false));
}
/// <summary>
/// Gets the encrypting stream.
/// </summary>
/// <param name="output">The output.</param>
/// <returns></returns>
public override FinishingStream GetEncryptingStream(Stream output, Keyczar.KeyczarBase keyczar)
{
var alg = new AesManaged
{
Mode = GetMode(),
Key = AesKeyBytes,
Padding = PaddingMode.PKCS7,
BlockSize = BlockLength * 8
};
alg.GenerateIV();
int hashlength = HmacKey.Maybe(h => h.HashLength, () => 0);
return(new DotNetSymmetricStream(alg, output, hashlength, encrypt: true));
}