/// <summary>
/// initialize the exportedSessionKey and internal keys
/// </summary>
/// <param name="flags">the flags of challenge</param>
/// <param name="challenge">the challenge packet</param>
/// <param name="responseKeyLM">the response key lm</param>
/// <param name="lmChallengeResponse">the challenge response lm</param>
/// <param name="encryptedRandomSessionKey">the encrypted random session key</param>
/// <param name="exportedSessionKey">the exported session key</param>
private void InitializeKeys(
NegotiateTypes flags,
NlmpChallengePacket challenge,
byte[] responseKeyLM,
byte[] lmChallengeResponse,
out byte[] encryptedRandomSessionKey,
out byte[] exportedSessionKey
)
{
// keyExchangeKey
byte[] keyExchangeKey = null;
// get random session key
NlmpUtility.GetEncryptedRandomSessionKey(
this.client.Config.Version, flags, this.client.Context.SessionBaseKey, lmChallengeResponse,
responseKeyLM, challenge.Payload.ServerChallenge, out encryptedRandomSessionKey, out keyExchangeKey,
out exportedSessionKey);
this.client.Context.ClientSigningKey = NlmpUtility.SignKey(flags, exportedSessionKey, "Client");
this.client.Context.ServerSigningKey = NlmpUtility.SignKey(flags, exportedSessionKey, "Server");
this.client.Context.ClientSealingKey = NlmpUtility.SealKey(flags, exportedSessionKey, "Client");
this.client.Context.ServerSealingKey = NlmpUtility.SealKey(flags, exportedSessionKey, "Server");
NlmpUtility.RC4Init(this.client.Context.ClientHandle, this.client.Context.ClientSealingKey);
NlmpUtility.RC4Init(this.client.Context.ServerHandle, this.client.Context.ServerSealingKey);
}
/// <summary>
/// after successfully authenticate, initialize the keys and handles
/// </summary>
/// <param name="exportedSessionKey">the exported key to initialize the keys and handles</param>
private void InitializeKeys(byte[] exportedSessionKey)
{
// initialize keys
this.nlmpServer.Context.ClientSigningKey =
NlmpUtility.SignKey(this.nlmpServer.Context.NegFlg, exportedSessionKey, "Client");
this.nlmpServer.Context.ServerSigningKey =
NlmpUtility.SignKey(this.nlmpServer.Context.NegFlg, exportedSessionKey, "Server");
this.nlmpServer.Context.ClientSealingKey =
NlmpUtility.SealKey(this.nlmpServer.Context.NegFlg, exportedSessionKey, "Client");
this.nlmpServer.Context.ServerSealingKey =
NlmpUtility.SealKey(this.nlmpServer.Context.NegFlg, exportedSessionKey, "Server");
// initialize handles
NlmpUtility.RC4Init(this.nlmpServer.Context.ClientHandle, this.nlmpServer.Context.ClientSealingKey);
NlmpUtility.RC4Init(this.nlmpServer.Context.ServerHandle, this.nlmpServer.Context.ServerSealingKey);
}