public async Task CompletesWithLastRead()
{
var pipe = new Pipe();
var encryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
encryptor.Writer.Write(new byte[] { 0xC1, 0x03, 0x01 });
encryptor.Writer.Complete();
var result = await pipe.Reader.ReadAsync().ConfigureAwait(false);
Assert.That(result.IsCompleted, Is.True);
}
public async Task CompleteAfterReadAsyncIsCalled()
{
var pipe = new Pipe();
var encryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
var reading = pipe.Reader.ReadAsync();
encryptor.Writer.Complete();
var result = await reading;
await Task.Delay(10).ConfigureAwait(false);
Assert.That(result.IsCompleted, Is.True);
}
public async Task CompleteAfterReadAsyncIsCalled()
{
var pipe = new Pipe();
var encryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
var completed = false;
pipe.Reader.OnWriterCompleted((e, o) => completed = true, null);
var reading = pipe.Reader.ReadAsync();
encryptor.Writer.Complete();
var result = await reading;
Assert.That(completed && result.IsCompleted, Is.True);
}
private async Task Encrypt(byte[] decrypted, byte[] encrypted)
{
var pipe = new Pipe();
var encryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
encryptor.Writer.Write(decrypted);
await encryptor.Writer.FlushAsync().ConfigureAwait(false);
var readResult = await pipe.Reader.ReadAsync().ConfigureAwait(false);
var result = readResult.Buffer.ToArray();
Assert.That(result, Is.EquivalentTo(encrypted));
}
/// <summary>
/// Tests the encryption-decryption cycle for the packet from server to client. The specified packet must be the same after the packet has passed this cycle.
/// Packets from server to client are never encrypted by Xor32, so these encryptor/decryptors are not involved here.
/// </summary>
/// <param name="packet">The packet.</param>
/// <returns>The task.</returns>
private async Task EncryptDecryptFromServerToClient(byte[] packet)
{
// this pipe connects the encryptor with the decryptor. You can imagine this as the server-to-client pipe of a network socket, for example.
var pipe = new Pipe();
var encryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
var decryptor = new PipelinedSimpleModulusDecryptor(pipe.Reader, PipelinedSimpleModulusDecryptor.DefaultClientKey);
encryptor.Writer.Write(packet);
await encryptor.Writer.FlushAsync().ConfigureAwait(false);
var readResult = await decryptor.Reader.ReadAsync().ConfigureAwait(false);
var result = readResult.Buffer.ToArray();
Assert.That(result, Is.EquivalentTo(packet));
}
public async ValueTask SimpleModulusEncryption()
{
var pipe = new Pipe();
var pipelinedEncryptor = new PipelinedSimpleModulusEncryptor(pipe.Writer);
var readBuffer = new byte[256];
for (int i = 0; i < PacketCount; i++)
{
await pipelinedEncryptor.Writer.WriteAsync(this.c3Packet);
await pipelinedEncryptor.Writer.FlushAsync();
var readResult = await pipe.Reader.ReadAsync();
readResult.Buffer.CopyTo(readBuffer);
//// In the server, I would process the readBuffer here
pipe.Reader.AdvanceTo(readResult.Buffer.Start, readResult.Buffer.End);
}
pipelinedEncryptor.Writer.Complete();
}