public BufferReference encrypt(IV iv, BufferReference content)
{
_provider.IV = iv.Data;
// don't see a way how we can reuse MemoryStream / CryptoStream here, need
// to implement based on TransFormBlock, but even then we need to create the
// Encryptor for each instance.
_outputStream.SetLength(0);
writeIV(_provider.IV, _outputStream);
using (var encryptor = _provider.CreateEncryptor())
{
// note: cryptostream closes our output stream, which is fine for us!)
using (var stream = new CryptoStream(_outputStream, encryptor, CryptoStreamMode.Write))
{
stream.Write(content.Buffer, content.Offset, content.Length);
stream.FlushFinalBlock();
return _outputStream.asBufferReference();
}
}
}
public static BufferReference encrypt(Key key, IV? iv_, BufferReference content)
{
using (var service = new EncryptionService(key))
{
var iv = iv_ ?? service.createRandomIV();
return service.encrypt(iv, content);
}
}
public static BufferReference encrypt(string serializedKey, IV? iv_, BufferReference content)
{
return encrypt(Key.deserialize(serializedKey), iv_, content);
}