//使用客户端的公共密钥加密对称密钥并发送给客。encryptAndSendSymmetricKey(client, rsa, symm);//使用对称密钥加密信息并发送encryptAndSendSecretMessage(client, symm, msg);}catch (Exception e){Console.WriteLine(e.Message);Console.WriteLine(e.StackTrace);}finally{try{client.Close();listener.Stop();}catch{//错误}Console.WriteLine("Server exiting...");}}private static RSAParameters getClientPublicKey(TcpClient client){// 从字节流获取串行化的公共密钥，通过串并转换写入类的实例byte[] buffer = new byte[RSA_KEY_SIZE_BYTES];NetworkStream ns = client.GetStream();MemoryStream ms = new MemoryStream();BinaryFormatter bf = new BinaryFormatter();RSAParameters result;int len = 0;int totalLen = 0;

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