public void Connect(string server, int port = 13000)
{
try
{
Client = new TcpClient(server, port);
Stream = Client.GetStream();
//Client.ReceiveBufferSize = 10_048_576;
//Client.SendBufferSize = 10_048_576;
Task.Run(ListenToServer);
Task.Run(ProcessIO);
RSAParameters param;
using (var rsa = new RSACryptoServiceProvider(512))
{
param = rsa.ExportParameters(false);
this.RSAParams = rsa.ExportParameters(true);
}
using (var aes = new AesCryptoServiceProvider())
{
this.PhysicalKey = new AESKey {
IV = aes.IV, Key = aes.Key
};
}
this.SessionKey = Helper.GenerateSessionKey();
string encSession = Helper.AESEncrypt(JsonConvert.SerializeObject(this.SessionKey), this.PhysicalKey);
this.SendMessage($"init{Helper.SocketMessageAttributeSeperator}{Name}{Helper.SocketMessageAttributeSeperator}{JsonConvert.SerializeObject(param)}{Helper.SocketMessageAttributeSeperator}{JsonConvert.SerializeObject(PhysicalKey)}{Helper.SocketMessageAttributeSeperator}{encSession}", EncryptionMode.RSA);
}
catch (Exception)
{
}
}
public void Send(string msg, EncryptionMode mode)
{
string encryptionIndicator = mode switch
{
EncryptionMode.AES => "aes",
EncryptionMode.None => "non",
EncryptionMode.RSA => "rsa",
_ => ""
} +Helper.SocketMessageAttributeSeperator;
if (mode == EncryptionMode.RSA)
{
msg += Helper.MacSeperator + Helper.RSASign(msg, TcpListener.Instance.RSAPrivateParameters);
msg = Helper.RSAEncrypt(msg, this.RSAParameters);
}
else if (mode == EncryptionMode.AES)
{
msg += Helper.MacSeperator + Helper.RSASign(msg, TcpListener.Instance.RSAPrivateParameters);
var buffer = new StringBuilder();
var maxSize = 100;
int iters = (int)Math.Ceiling(1f * msg.Length / maxSize);
for (var i = 0; i < iters; i++)
{
string item;
if (i * maxSize + 100 > msg.Length)
{
item = msg.Substring(i * maxSize);
}
else
{
item = msg.Substring(i * maxSize, 100);
}
if (this.SessionKey.IsExpired)
{
buffer.Append(Helper.SessionKeySeperator);
this.SessionKey = Helper.GenerateSessionKey();
buffer.Append(Helper.AESEncrypt(JsonConvert.SerializeObject(this.SessionKey), this.PhysicalKey));
buffer.Append(Helper.SessionKeySeperator);
buffer.Append(Helper.AESChunkSeperator);
}
buffer.Append(Helper.AESEncrypt(item, this.SessionKey.AESKey));
buffer.Append(Helper.AESChunkSeperator);
}
msg = buffer.ToString();
}
this.SendQueue.Enqueue(encryptionIndicator + msg + Helper.SocketMessageSplitter);
}
/// <summary>
/// body AES加密
/// </summary>
/// <param name="body"></param>
/// <returns></returns>
public static string BodyForAesEncrypt(object body)
{
var bodyData = JsonSerializeHelper.ToJsonForlowercase(body);
return(Helper.EncodeBytes(Helper.AESEncrypt(bodyData, CtripConfig.AesKey, CtripConfig.AesIv)));
}
public async void SendMessage(string msg, EncryptionMode mode)
{
while (!Initialized)
{
await Task.Delay(100);
}
string encryptionIndicator = "";
switch (mode)
{
case EncryptionMode.None:
encryptionIndicator = "non";
break;
case EncryptionMode.RSA:
encryptionIndicator = "rsa";
break;
case EncryptionMode.AES:
encryptionIndicator = "aes";
break;
default:
break;
}
encryptionIndicator += Helper.SocketMessageAttributeSeperator;
if (mode == EncryptionMode.RSA)
{
msg += Helper.MacSeperator + Helper.RSASign(msg, this.RSAParams);
msg = Helper.RSAEncrypt(msg, this.ServerParams);
}
if (mode == EncryptionMode.AES)
{
msg += Helper.MacSeperator + Helper.RSASign(msg, this.RSAParams);
var buffer = new StringBuilder();
var maxSize = 100;
int iters = (int)Math.Ceiling(1f * msg.Length / maxSize);
for (var i = 0; i < iters; i++)
{
string item;
if (i * maxSize + 100 > msg.Length)
{
item = msg.Substring(i * maxSize);
}
else
{
item = msg.Substring(i * maxSize, 100);
}
if (this.SessionKey.IsExpired)
{
buffer.Append(Helper.SessionKeySeperator);
this.SessionKey = Helper.GenerateSessionKey();
buffer.Append(Helper.AESEncrypt(JsonConvert.SerializeObject(this.SessionKey), this.PhysicalKey));
buffer.Append(Helper.SessionKeySeperator);
buffer.Append(Helper.AESChunkSeperator);
}
buffer.Append(Helper.AESEncrypt(item, this.SessionKey.AESKey));
buffer.Append(Helper.AESChunkSeperator);
}
msg = buffer.ToString();
}
this.SendQueue.Enqueue(encryptionIndicator + msg + Helper.SocketMessageSplitter);
}
