private void HandleSpecificPacket(KexInit packet)
{
m_Logger.LogDebug("Received KexInit");
if (m_PendingExchangeContext == null)
{
m_Logger.LogDebug("Trigger re-exchange from client");
m_PendingExchangeContext = new ExchangeContext();
Send(m_KexInitServerToClient);
}
m_KexInitClientToServer = packet;
m_PendingExchangeContext.KexAlgorithm = packet.PickKexAlgorithm();
m_PendingExchangeContext.HostKeyAlgorithm = packet.PickHostKeyAlgorithm();
m_PendingExchangeContext.CipherClientToServer = packet.PickCipherClientToServer();
m_PendingExchangeContext.CipherServerToClient = packet.PickCipherServerToClient();
m_PendingExchangeContext.MACAlgorithmClientToServer = packet.PickMACAlgorithmClientToServer();
m_PendingExchangeContext.MACAlgorithmServerToClient = packet.PickMACAlgorithmServerToClient();
m_PendingExchangeContext.CompressionClientToServer = packet.PickCompressionAlgorithmClientToServer();
m_PendingExchangeContext.CompressionServerToClient = packet.PickCompressionAlgorithmServerToClient();
m_Logger.LogDebug($"Selected KexAlgorithm: {m_PendingExchangeContext.KexAlgorithm.Name}");
m_Logger.LogDebug($"Selected HostKeyAlgorithm: {m_PendingExchangeContext.HostKeyAlgorithm.Name}");
m_Logger.LogDebug($"Selected CipherClientToServer: {m_PendingExchangeContext.CipherClientToServer.Name}");
m_Logger.LogDebug($"Selected CipherServerToClient: {m_PendingExchangeContext.CipherServerToClient.Name}");
m_Logger.LogDebug($"Selected MACAlgorithmClientToServer: {m_PendingExchangeContext.MACAlgorithmClientToServer.Name}");
m_Logger.LogDebug($"Selected MACAlgorithmServerToClient: {m_PendingExchangeContext.MACAlgorithmServerToClient.Name}");
m_Logger.LogDebug($"Selected CompressionClientToServer: {m_PendingExchangeContext.CompressionClientToServer.Name}");
m_Logger.LogDebug($"Selected CompressionServerToClient: {m_PendingExchangeContext.CompressionServerToClient.Name}");
}
private void HandleSpecificPacket(KexInit packet)
{
logger.LogDebug("Processing KexInit packet.");
// TODO - handle re-exchange
// Keep track of the client-to-server packet
kexInitClientToServer = packet;
// A little logging
logger.LogDebug(" ...KEX algorithms: {0}", string.Join(",", packet.KexAlgorithms));
logger.LogDebug(" ...host key algorithms: {0}", string.Join(",", packet.ServerHostKeyAlgorithms));
logger.LogDebug(" ...ciphers ctos: {0}", string.Join(",", packet.EncryptionAlgorithmsClientToServer));
logger.LogDebug(" ...ciphers stoc: {0}", string.Join(",", packet.EncryptionAlgorithmsServerToClient));
logger.LogDebug(" ...MACs ctos: {0}", string.Join(",", packet.MacAlgorithmsClientToServer));
logger.LogDebug(" ...MACs stoc: {0}", string.Join(",", packet.MacAlgorithmsServerToClient));
logger.LogDebug(" ...compression ctos: {0}", string.Join(",", packet.CompressionAlgorithmsClientToServer));
logger.LogDebug(" ...compression stoc: {0}", string.Join(",", packet.CompressionAlgorithmsServerToClient));
// Pick algorithms
pendingExchangeContext.KexAlgorithm = KeyInfo.PickKexAlgorithm(packet.KexAlgorithms);
pendingExchangeContext.HostKeyAlgorithm = KeyInfo.PickHostKeyAlgorithm(packet.ServerHostKeyAlgorithms);
pendingExchangeContext.CipherClientToServer = KeyInfo.PickCipher(packet.EncryptionAlgorithmsClientToServer, "Client-To-Server");
pendingExchangeContext.CipherServerToClient = KeyInfo.PickCipher(packet.EncryptionAlgorithmsServerToClient, "Server-To-Client");
pendingExchangeContext.MACAlgorithmClientToServer = KeyInfo.PickMACAlgorithm(packet.MacAlgorithmsClientToServer, "Client-To-Server");
pendingExchangeContext.MACAlgorithmServerToClient = KeyInfo.PickMACAlgorithm(packet.MacAlgorithmsServerToClient, "Server-To-Client");
pendingExchangeContext.CompressionClientToServer = KeyInfo.PickCompression(packet.CompressionAlgorithmsClientToServer, "Client-To-Server");
pendingExchangeContext.CompressionServerToClient = KeyInfo.PickCompression(packet.CompressionAlgorithmsServerToClient, "Server-To-Client");
}