void send_pico_auth_message(Channel channel, EncKeys keys, Nonce serviceNonce, KeyPair picoIdentityKey, KeyPair picoEphemeralKey, string extra_data_to_send)
{
Json json = new Json();
PicoBuffer buf = new PicoBuffer(0);
PicoBuffer toEncrypt = new PicoBuffer(0);
picoIdentityKey.getpublicder(buf);
toEncrypt.append_lengthprepend(buf);
PicoBuffer toSign = new PicoBuffer(0);
toSign.append(serviceNonce.get_buffer(), serviceNonce.get_length());
toSign.append(new byte[] { 0x00, 0x00, 0x00, 0x00 });
buf.clear();
picoEphemeralKey.getpublicder(buf);
toSign.append(buf);
buf.clear();
picoIdentityKey.sign_data(toSign, buf);
toEncrypt.append_lengthprepend(buf);
PicoBuffer mac = new PicoBuffer(0);
buf.clear();
picoIdentityKey.getpublicder(buf);
CryptoSupport.generate_mac(keys.pMacKey, buf, mac);
toEncrypt.append_lengthprepend(mac);
PicoBuffer extraData = new PicoBuffer(0);
extraData.append(extra_data_to_send);
toEncrypt.append_lengthprepend(extraData);
PicoBuffer iv = new PicoBuffer(16);
CryptoSupport.generate_iv(iv);
PicoBuffer encrypted = new PicoBuffer(0);
CryptoSupport.encrypt(keys.pEncKey, iv, toEncrypt, encrypted);
buf.clear();
Base64.encode(encrypted, buf);
json.add("encryptedData", buf);
buf.clear();
Base64.encode(iv, buf);
json.add("iv", buf);
json.add("sessionId", 0);
buf.clear();
json.serialize(buf);
channel.write_buffer(buf);
json.delete();
buf.delete();
toEncrypt.delete();
toSign.delete();
mac.delete();
extraData.delete();
iv.delete();
encrypted.delete();
}
void echo_main(string channel_name)
{
Channel channel = Channel.connect(channel_name);
PicoBuffer buf = new PicoBuffer(0);
PicoBuffer toSend = new PicoBuffer(0);
channel.read(buf);
toSend.append_lengthprepend(buf);
byte[] bytesToSend = new byte[toSend.get_pos() + 1];
toSend.copy_to_array(bytesToSend);
channel.write(bytesToSend, bytesToSend.Length);
buf.delete();
toSend.delete();
channel.delete();
}
public void length_prepend()
{
PicoBuffer b;
PicoBuffer b2;
b = new PicoBuffer(3);
b2 = new PicoBuffer(3);
b2.append("67890");
Assert.AreEqual(b2.get_pos(), 5);
Assert.AreEqual(b2.get_size() % 3, 0);
b.append_lengthprepend(b2);
byte[] expected = new byte[] { 0x00, 0x00, 0x00, 0x05, Convert.ToByte('6'), Convert.ToByte('7'), Convert.ToByte('8'), Convert.ToByte('9'), Convert.ToByte('0'), 0x00 };
byte[] ret = new byte[10];
b.copy_to_array(ret, 10);
CollectionAssert.AreEqual(ret, expected);
b.delete();
b2.delete();
}
