C#实现将聊天数据发送加密
作者：芝麻粒儿
这篇文章主要为大家详细介绍了如何利用C#实现将聊天数据发送加密的功能，文中的示例代码讲解详细，对我们学习C#有一定的帮助，感兴趣的小伙伴可以跟随小编一起了解一下
实践过程
效果
代码
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
#region 定义全局对象及变量
private IPEndPoint Server;//服务器端
private IPEndPoint Client;//客户端
private Socket mySocket;//套接字
private EndPoint ClientIP;//IP地址
byte[] buffer, data;//接收缓存
bool blFlag = true;//标识是否第一次发送信息
bool ISPort = false;//判断端口打开
int SendNum1, ReceiveNum1, DisNum1; //记录窗体加载时的已发送\已接收\丢失的数据报
int SendNum2, ReceiveNum2, DisNum2; //记录当前已发送\已接收\丢失的数据报
int SendNum3, ReceiveNum3, DisNum3; //缓存已发送\已接收\丢失的数据报
int port;//端口号
#endregion
//异步接收信息
private void StartLister(IAsyncResult IAResult)
{
int Num = mySocket.EndReceiveFrom(IAResult, ref ClientIP);
string strInfo = Encoding.Unicode.GetString(buffer, 0, Num);
rtbContent.AppendText("用户" + ClientIP.ToString());
rtbContent.AppendText("：");
rtbContent.AppendText("\r\n");
rtbContent.AppendText(DecryptDES(strInfo, "mrsoftxk"));//对接收到的信息进行解密
rtbContent.AppendText("\r\n");
mySocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref ClientIP, new AsyncCallback(StartLister), null);
}
//初始化已发送、已接收和丢失的数据报
private void Form1_Load(object sender, EventArgs e)
{
if (blFlag == true)
{
IPGlobalProperties NetInfo = IPGlobalProperties.GetIPGlobalProperties();
UdpStatistics myUdpStat = null;
myUdpStat = NetInfo.GetUdpIPv4Statistics();
SendNum1 = Int32.Parse(myUdpStat.DatagramsSent.ToString());
ReceiveNum1 = Int32.Parse(myUdpStat.DatagramsReceived.ToString());
DisNum1 = Int32.Parse(myUdpStat.IncomingDatagramsDiscarded.ToString());
}
}
//设置端口号
private void button4_Click(object sender, EventArgs e)
{
try
{
port = Convert.ToInt32(textBox4.Text);
CheckForIllegalCrossThreadCalls = false;
buffer = new byte[1024];
data = new byte[1024];
Server = new IPEndPoint(IPAddress.Any, port);
Client = new IPEndPoint(IPAddress.Broadcast, port);
ClientIP = (EndPoint)Server;
mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
mySocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
mySocket.Bind(Server);
mySocket.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref ClientIP, new AsyncCallback(StartLister), null);
ISPort = true;//打开指定端口号
}
catch { }
}
//发送信息
private void button2_Click(object sender, EventArgs e)
{
if (ISPort == true)//判断是否有打开的端口号
{
IPGlobalProperties NetInfo = IPGlobalProperties.GetIPGlobalProperties();
UdpStatistics myUdpStat = null;
myUdpStat = NetInfo.GetUdpIPv4Statistics();
try
{
if (blFlag == false)//非第一次发送
{
SendNum2 = Int32.Parse(myUdpStat.DatagramsSent.ToString());
ReceiveNum2 = Int32.Parse(myUdpStat.DatagramsReceived.ToString());
DisNum2 = Int32.Parse(myUdpStat.IncomingDatagramsDiscarded.ToString());
textBox1.Text = Convert.ToString(SendNum2 - SendNum3);
textBox2.Text = Convert.ToString(ReceiveNum2 - ReceiveNum3);
textBox3.Text = Convert.ToString(DisNum2 - DisNum3);
}
SendNum2 = Int32.Parse(myUdpStat.DatagramsSent.ToString());
ReceiveNum2 = Int32.Parse(myUdpStat.DatagramsReceived.ToString());
DisNum2 = Int32.Parse(myUdpStat.IncomingDatagramsDiscarded.ToString());
SendNum3 = SendNum2; //记录本次的发送数据报
ReceiveNum3 = ReceiveNum2;//记录本次的接收数据报
DisNum3 = DisNum2; //记录本次的丢失数据报
if (blFlag == true)//第一次发送
{
textBox1.Text = Convert.ToString(SendNum2 - SendNum1);
textBox2.Text = Convert.ToString(ReceiveNum2 - ReceiveNum1);
textBox3.Text = Convert.ToString(DisNum2 - DisNum1);
blFlag = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
string str = EncryptDES(rtbSend.Text, "mrsoftxk");//加密要发送的信息
data = Encoding.Unicode.GetBytes(str);
mySocket.SendTo(data, data.Length, SocketFlags.None, Client);
rtbSend.Text = "";
}
else
{
MessageBox.Show("请首先打开端口！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
button4.Focus();
}
}
//清屏
private void button1_Click(object sender, EventArgs e)
{
rtbContent.Clear();
}
//退出
private void button3_Click(object sender, EventArgs e)
{
Application.Exit();
}
//按<Ctrl+Enter>组合键发送信息
private void rtbSend_KeyDown(object sender, KeyEventArgs e)
{
//当同时按下Ctrl和Enter时，发送消息
if (e.Control && e.KeyValue == 13)
{
e.Handled = true;
button2_Click(this, null);
}
}
//聊天记录随时滚动
private void rtbContent_TextChanged(object sender, EventArgs e)
{
rtbContent.ScrollToCaret();
}
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };//密钥
#region DES加密字符串
///<summary>
///DES加密字符串
///</summary>
///<param name="str">待加密的字符串</param>
///<param name="key">加密密钥,要求为8位</param>
///<returns>加密成功返回加密后的字符串，失败返回源字符串</returns>
public string EncryptDES(string str, string key)
{
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(key.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(str);
DESCryptoServiceProvider myDES = new DESCryptoServiceProvider();
MemoryStream MStream = new MemoryStream();
CryptoStream CStream = new CryptoStream(MStream, myDES.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
CStream.Write(inputByteArray, 0, inputByteArray.Length);
CStream.FlushFinalBlock();
return Convert.ToBase64String(MStream.ToArray());
}
catch
{
return str;
}
}
#endregion
#region DES解密字符串
///<summary>
///DES解密字符串
///</summary>
///<param name="str">待解密的字符串</param>
///<param name="key">解密密钥,要求为8位,和加密密钥相同</param>
///<returns>解密成功返回解密后的字符串，失败返源字符串</returns>
public string DecryptDES(string str, string key)
{
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(key);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(str);
DESCryptoServiceProvider myDES = new DESCryptoServiceProvider();
MemoryStream MStream = new MemoryStream();
CryptoStream CStream = new CryptoStream(MStream, myDES.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
CStream.Write(inputByteArray, 0, inputByteArray.Length);
CStream.FlushFinalBlock();
return Encoding.UTF8.GetString(MStream.ToArray());
}
catch
{
return str;
}
}
#endregion
}
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.splitContainer1 = new System.Windows.Forms.SplitContainer();
this.rtbContent = new System.Windows.Forms.RichTextBox();
this.splitContainer2 = new System.Windows.Forms.SplitContainer();
this.rtbSend = new System.Windows.Forms.RichTextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.textBox1 = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.label8 = new System.Windows.Forms.Label();
this.textBox4 = new System.Windows.Forms.TextBox();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.button4 = new System.Windows.Forms.Button();
this.splitContainer1.Panel1.SuspendLayout();
this.splitContainer1.Panel2.SuspendLayout();
this.splitContainer1.SuspendLayout();
this.splitContainer2.Panel1.SuspendLayout();
this.splitContainer2.Panel2.SuspendLayout();
this.splitContainer2.SuspendLayout();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// splitContainer1
//
this.splitContainer1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.splitContainer1.Location = new System.Drawing.Point(4, 4);
this.splitContainer1.Name = "splitContainer1";
this.splitContainer1.Orientation = System.Windows.Forms.Orientation.Horizontal;
//
// splitContainer1.Panel1
//
this.splitContainer1.Panel1.Controls.Add(this.rtbContent);
//
// splitContainer1.Panel2
//
this.splitContainer1.Panel2.Controls.Add(this.splitContainer2);
this.splitContainer1.Size = new System.Drawing.Size(430, 364);
this.splitContainer1.SplitterDistance = 240;
this.splitContainer1.SplitterWidth = 3;
this.splitContainer1.TabIndex = 1;
//
// rtbContent
//
this.rtbContent.BackColor = System.Drawing.Color.White;
this.rtbContent.BorderStyle = System.Windows.Forms.BorderStyle.None;
this.rtbContent.Dock = System.Windows.Forms.DockStyle.Fill;
this.rtbContent.Location = new System.Drawing.Point(0, 0);
this.rtbContent.Name = "rtbContent";
this.rtbContent.ReadOnly = true;
this.rtbContent.Size = new System.Drawing.Size(428, 238);
this.rtbContent.TabIndex = 9;
this.rtbContent.Text = "";
this.rtbContent.TextChanged += new System.EventHandler(this.rtbContent_TextChanged);
//
// splitContainer2
//
this.splitContainer2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.splitContainer2.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer2.Location = new System.Drawing.Point(0, 0);
this.splitContainer2.Name = "splitContainer2";
this.splitContainer2.Orientation = System.Windows.Forms.Orientation.Horizontal;
//
// splitContainer2.Panel1
//
this.splitContainer2.Panel1.Controls.Add(this.rtbSend);
//
// splitContainer2.Panel2
//
this.splitContainer2.Panel2.Controls.Add(this.button1);
this.splitContainer2.Panel2.Controls.Add(this.button2);
this.splitContainer2.Panel2.Controls.Add(this.button3);
this.splitContainer2.Size = new System.Drawing.Size(430, 121);
this.splitContainer2.SplitterDistance = 87;
this.splitContainer2.SplitterWidth = 1;
this.splitContainer2.TabIndex = 0;
//
// rtbSend
//
this.rtbSend.BorderStyle = System.Windows.Forms.BorderStyle.None;
this.rtbSend.Dock = System.Windows.Forms.DockStyle.Fill;
this.rtbSend.Location = new System.Drawing.Point(0, 0);
this.rtbSend.Name = "rtbSend";
this.rtbSend.Size = new System.Drawing.Size(428, 85);
this.rtbSend.TabIndex = 2;
this.rtbSend.Text = "";
this.rtbSend.KeyDown += new System.Windows.Forms.KeyEventHandler(this.rtbSend_KeyDown);
//
// button1
//
this.button1.Location = new System.Drawing.Point(294, 4);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(39, 23);
this.button1.TabIndex = 4;
this.button1.Text = "清屏";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(339, 4);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(38, 23);
this.button2.TabIndex = 3;
this.button2.Text = "发送";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(383, 4);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(39, 23);
this.button3.TabIndex = 5;
this.button3.Text = "关闭";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// groupBox1
//
this.groupBox1.Controls.Add(this.textBox3);
this.groupBox1.Controls.Add(this.label5);
this.groupBox1.Controls.Add(this.textBox2);
this.groupBox1.Controls.Add(this.label4);
this.groupBox1.Controls.Add(this.textBox1);
this.groupBox1.Controls.Add(this.label3);
this.groupBox1.Location = new System.Drawing.Point(440, 87);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(109, 165);
this.groupBox1.TabIndex = 8;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "数据传输信息";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(20, 132);
this.textBox3.Name = "textBox3";
this.textBox3.ReadOnly = true;
this.textBox3.Size = new System.Drawing.Size(77, 21);
this.textBox3.TabIndex = 7;
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(8, 115);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(77, 12);
this.label5.TabIndex = 6;
this.label5.Text = "丢失数据报：";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(20, 86);
this.textBox2.Name = "textBox2";
this.textBox2.ReadOnly = true;
this.textBox2.Size = new System.Drawing.Size(77, 21);
this.textBox2.TabIndex = 7;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(8, 69);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(89, 12);
this.label4.TabIndex = 4;
this.label4.Text = "已接收数据报：";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(20, 40);
this.textBox1.Name = "textBox1";
this.textBox1.ReadOnly = true;
this.textBox1.Size = new System.Drawing.Size(77, 21);
this.textBox1.TabIndex = 6;
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(8, 23);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(89, 12);
this.label3.TabIndex = 2;
this.label3.Text = "已发送数据报：";
//
// label8
//
this.label8.AutoSize = true;
this.label8.Location = new System.Drawing.Point(8, 23);
this.label8.Name = "label8";
this.label8.Size = new System.Drawing.Size(53, 12);
this.label8.TabIndex = 2;
this.label8.Text = "端口号：";
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(20, 40);
this.textBox4.Name = "textBox4";
this.textBox4.Size = new System.Drawing.Size(77, 21);
this.textBox4.TabIndex = 0;
this.textBox4.Text = "8888";
//
// groupBox2
//
this.groupBox2.Controls.Add(this.button4);
this.groupBox2.Controls.Add(this.textBox4);
this.groupBox2.Controls.Add(this.label8);
this.groupBox2.Location = new System.Drawing.Point(440, 258);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(109, 110);
this.groupBox2.TabIndex = 2;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "端口设置";
//
// button4
//
this.button4.Location = new System.Drawing.Point(22, 68);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(75, 32);
this.button4.TabIndex = 1;
this.button4.Text = "设置";
this.button4.UseVisualStyleBackColor = true;
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(555, 372);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.splitContainer1);
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "对数据报进行加密保障通信完全";
this.Load += new System.EventHandler(this.Form1_Load);
this.splitContainer1.Panel1.ResumeLayout(false);
this.splitContainer1.Panel2.ResumeLayout(false);
this.splitContainer1.ResumeLayout(false);
this.splitContainer2.Panel1.ResumeLayout(false);
this.splitContainer2.Panel2.ResumeLayout(false);
this.splitContainer2.ResumeLayout(false);
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.SplitContainer splitContainer1;
private System.Windows.Forms.RichTextBox rtbContent;
private System.Windows.Forms.SplitContainer splitContainer2;
private System.Windows.Forms.RichTextBox rtbSend;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label8;
private System.Windows.Forms.TextBox textBox4;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Button button4;
}
到此这篇关于C#实现将聊天数据发送加密的文章就介绍到这了,更多相关C#聊天数据发送加密内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！