public CryptCarotDAV_CryptStream(CryptCarotDAV crypter, Stream baseStream, long?streamLength = null) : base()
{
innerStream = new HashStream(baseStream, new SHA256CryptoServiceProvider());
innerStreamLength = streamLength ?? innerStream.Length;
Array.Copy(_salt, header, 24);
aes = new AesCryptoServiceProvider();
aes.BlockSize = BlockSize;
aes.KeySize = KeySize;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.Zeros;
aes.Key = crypter.Key;
aes.IV = crypter.IV;
encryptor = aes.CreateEncryptor();
cryptStream = new CryptoStream(innerStream, encryptor, CryptoStreamMode.Read);
if (innerStreamLength > 0)
{
patlen = (int)((innerStreamLength - 1) % BlockSizeByte + 1);
}
else
{
patlen = BlockSizeByte;
}
cryptlen = innerStreamLength + BlockSizeByte - patlen;
}
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (!disposed)
{
if (isDisposing)
{
innerStream?.Dispose();
cryptStream?.Dispose();
}
innerStream = null;
cryptStream = null;
disposed = true;
}
}