Form1.cs

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  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.IO;
 10 using System.Security.Cryptography;
 11 
 12 namespace EncryptTextFileTwo
 13 {
 14     public partial class Form1 : Form
 15     {
 16         public Form1()
 17         {
 18             InitializeComponent();
 19         }
 20 
 21         //打开图片
 22         private void button1_Click(object sender, EventArgs e)
 23         {
 24             openFileDialog1.Filter = "jpg,bmp,gif|*.jpg;*.gif;*.bmp";
 25             if (openFileDialog1.ShowDialog() == DialogResult.OK)
 26             {
 27                 pictureBox1.ImageLocation = openFileDialog1.FileName;
 28             }
 29         }
 30         //打开加密文件
 31         private void button2_Click(object sender, EventArgs e)
 32         {
 33             openFileDialog1.Filter = "文本文件|*.txt";
 34             if (openFileDialog1.ShowDialog() == DialogResult.OK)
 35             {
 36                 textBox1.Text = openFileDialog1.FileName;
 37             }
 38         }
 39         // 加密
 40         private void button3_Click(object sender, EventArgs e)
 41         {
 42             try
 43             {
 44                 if (pictureBox1.ImageLocation == null)
 45                 { MessageBox.Show("请选择一幅图片用于加密"); return; }
 46                 if (textBox1.Text == "")
 47                 { MessageBox.Show("请选择加密文件路径"); return; }
 48                 //图片流
 49                 FileStream fsPic = new FileStream(pictureBox1.ImageLocation, FileMode.Open, FileAccess.Read);
 50                 //加密文件流
 51                 FileStream fsText = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read);
 52                 //初始化Key IV
 53                 byte[] bykey = new byte[16];
 54                 byte[] byIv = new byte[8];
 55                 fsPic.Read(bykey, 0, 16);
 56                 fsPic.Read(byIv, 0, 8);
 57                 //临时加密文件
 58                 string strPath = textBox1.Text;//加密文件的路径
 59                 int intLent = strPath.LastIndexOf("\\") + 1;
 60                 int intLong = strPath.Length;
 61                 string strName = strPath.Substring(intLent, intLong - intLent);//要加密的文件名称
 62                 string strLinPath = "C:\\" + strName;//临时加密文件路径，所以被加密的文件不可以放在C盘的根目录下
 63                 FileStream fsOut = File.Open(strLinPath, FileMode.Create, FileAccess.Write);
 64                 //开始加密
 65                 RC2CryptoServiceProvider desc = new RC2CryptoServiceProvider();//des进行加
 66                 BinaryReader br = new BinaryReader(fsText);//从要加密的文件中读出文件内容
 67                 CryptoStream cs = new CryptoStream(fsOut, desc.CreateEncryptor(bykey, byIv), CryptoStreamMode.Write);//写入临时加密文件
 68                 cs.Write(br.ReadBytes((int)fsText.Length), 0, (int)fsText.Length);//写入加密流
 69                 cs.FlushFinalBlock();
 70                 cs.Flush();
 71                 cs.Close();
 72                 fsPic.Close();
 73                 fsText.Close();
 74                 fsOut.Close();
 75                 File.Delete(textBox1.Text.TrimEnd());//册除原文件
 76                 File.Copy(strLinPath, textBox1.Text);//复制加密文件
 77                 File.Delete(strLinPath);//册除临时文件
 78                 MessageBox.Show("加密成功");
 79                 pictureBox1.ImageLocation = null;
 80                 textBox1.Text = "";
 81             }
 82             catch (Exception ee)
 83             {
 84                 MessageBox.Show(ee.Message);
 85             }
 86 
 87         }
 88 
 89         //解密
 90         private void button4_Click(object sender, EventArgs e)
 91         {
 92             try
 93             {
 94                 //图片流
 95                 FileStream fsPic = new FileStream(pictureBox1.ImageLocation, FileMode.Open, FileAccess.Read);
 96                 //解密文件流
 97                 FileStream fsOut = File.Open(textBox1.Text, FileMode.Open, FileAccess.Read);
 98                 //初始化Key IV
 99                 byte[] bykey = new byte[16];
100                 byte[] byIv = new byte[8];
101                 fsPic.Read(bykey, 0, 16);
102                 fsPic.Read(byIv, 0, 8);
103                 //临时解密文件
104                 string strPath = textBox1.Text;//加密文件的路径
105                 int intLent = strPath.LastIndexOf("\\") + 1;
106                 int intLong = strPath.Length;
107                 string strName = strPath.Substring(intLent, intLong - intLent);//要加密的文件名称
108                 string strLinPath = "C:\\" + strName;//临时解密文件路径
109                 FileStream fs = new FileStream(strLinPath, FileMode.Create, FileAccess.Write);
110                 //开始解密
111                 RC2CryptoServiceProvider desc = new RC2CryptoServiceProvider();//des进行解
112                 CryptoStream csDecrypt = new CryptoStream(fsOut, desc.CreateDecryptor(bykey, byIv), CryptoStreamMode.Read);//读出加密文件
113                 BinaryReader sr = new BinaryReader(csDecrypt);//从要加密流中读出文件内容
114                 BinaryWriter sw = new BinaryWriter(fs);//写入解密流
115                 sw.Write(sr.ReadBytes(Convert.ToInt32(fsOut.Length)));//
116                 sw.Flush();
117                 sw.Close();
118                 sr.Close();
119                 fs.Close();
120                 fsOut.Close();
121                 fsPic.Close();
122                 csDecrypt.Flush();
123 
124                 File.Delete(textBox1.Text.TrimEnd());//册除原文件
125                 File.Copy(strLinPath, textBox1.Text);//复制加密文件
126                 File.Delete(strLinPath);//册除临时文件
127                 MessageBox.Show("解密成功");
128                 pictureBox1.ImageLocation = null;
129                 textBox1.Text = "";
130             }
131             catch (Exception ee)
132             {
133                 MessageBox.Show(ee.Message);
134             }
135         }
136     }
137 }

Form1.Designer.cs

View Code

  1 namespace EncryptTextFileTwo
  2 {
  3     partial class Form1
  4     {
  5         /// <summary>
  6 /// 必需的设计器变量。
  7 /// </summary>
  8         private System.ComponentModel.IContainer components = null;
  9 
 10         /// <summary>
 11 /// 清理所有正在使用的资源。
 12 /// </summary>
 13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
 14         protected override void Dispose(bool disposing)
 15         {
 16             if (disposing && (components != null))
 17             {
 18                 components.Dispose();
 19             }
 20             base.Dispose(disposing);
 21         }
 22 
 23         #region Windows 窗体设计器生成的代码
 24 
 25         /// <summary>
 26 /// 设计器支持所需的方法 - 不要
 27 /// 使用代码编辑器修改此方法的内容。
 28 /// </summary>
 29         private void InitializeComponent()
 30         {
 31             this.groupBox1 = new System.Windows.Forms.GroupBox();
 32             this.button4 = new System.Windows.Forms.Button();
 33             this.button3 = new System.Windows.Forms.Button();
 34             this.textBox1 = new System.Windows.Forms.TextBox();
 35             this.button2 = new System.Windows.Forms.Button();
 36             this.label2 = new System.Windows.Forms.Label();
 37             this.label1 = new System.Windows.Forms.Label();
 38             this.pictureBox1 = new System.Windows.Forms.PictureBox();
 39             this.button1 = new System.Windows.Forms.Button();
 40             this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
 41             this.groupBox1.SuspendLayout();
 42             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
 43             this.SuspendLayout();
 44             // 
 45 // groupBox1
 46 // 
 47             this.groupBox1.Controls.Add(this.button4);
 48             this.groupBox1.Controls.Add(this.button3);
 49             this.groupBox1.Controls.Add(this.textBox1);
 50             this.groupBox1.Controls.Add(this.button2);
 51             this.groupBox1.Controls.Add(this.label2);
 52             this.groupBox1.Controls.Add(this.label1);
 53             this.groupBox1.Controls.Add(this.pictureBox1);
 54             this.groupBox1.Controls.Add(this.button1);
 55             this.groupBox1.Location = new System.Drawing.Point(11, 3);
 56             this.groupBox1.Name = "groupBox1";
 57             this.groupBox1.Size = new System.Drawing.Size(282, 206);
 58             this.groupBox1.TabIndex = 0;
 59             this.groupBox1.TabStop = false;
 60             // 
 61 // button4
 62 // 
 63             this.button4.Location = new System.Drawing.Point(189, 172);
 64             this.button4.Name = "button4";
 65             this.button4.Size = new System.Drawing.Size(75, 23);
 66             this.button4.TabIndex = 15;
 67             this.button4.Text = "解密";
 68             this.button4.UseVisualStyleBackColor = true;
 69             this.button4.Click += new System.EventHandler(this.button4_Click);
 70             // 
 71 // button3
 72 // 
 73             this.button3.Location = new System.Drawing.Point(90, 172);
 74             this.button3.Name = "button3";
 75             this.button3.Size = new System.Drawing.Size(75, 23);
 76             this.button3.TabIndex = 14;
 77             this.button3.Text = "加密";
 78             this.button3.UseVisualStyleBackColor = true;
 79             this.button3.Click += new System.EventHandler(this.button3_Click);
 80             // 
 81 // textBox1
 82 // 
 83             this.textBox1.Location = new System.Drawing.Point(21, 145);
 84             this.textBox1.Name = "textBox1";
 85             this.textBox1.Size = new System.Drawing.Size(243, 21);
 86             this.textBox1.TabIndex = 13;
 87             // 
 88 // button2
 89 // 
 90             this.button2.Location = new System.Drawing.Point(170, 116);
 91             this.button2.Name = "button2";
 92             this.button2.Size = new System.Drawing.Size(94, 23);
 93             this.button2.TabIndex = 12;
 94             this.button2.Text = "打开文本文件\r\n";
 95             this.button2.UseVisualStyleBackColor = true;
 96             this.button2.Click += new System.EventHandler(this.button2_Click);
 97             // 
 98 // label2
 99 // 
100             this.label2.AutoSize = true;
101             this.label2.Location = new System.Drawing.Point(21, 126);
102             this.label2.Name = "label2";
103             this.label2.Size = new System.Drawing.Size(65, 12);
104             this.label2.TabIndex = 11;
105             this.label2.Text = "文本文件：";
106             // 
107 // label1
108 // 
109             this.label1.AutoSize = true;
110             this.label1.Location = new System.Drawing.Point(17, 26);
111             this.label1.Name = "label1";
112             this.label1.Size = new System.Drawing.Size(65, 12);
113             this.label1.TabIndex = 10;
114             this.label1.Text = "显示图片：";
115             // 
116 // pictureBox1
117 // 
118             this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
119             this.pictureBox1.Location = new System.Drawing.Point(17, 45);
120             this.pictureBox1.Name = "pictureBox1";
121             this.pictureBox1.Size = new System.Drawing.Size(247, 61);
122             this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
123             this.pictureBox1.TabIndex = 9;
124             this.pictureBox1.TabStop = false;
125             // 
126 // button1
127 // 
128             this.button1.Location = new System.Drawing.Point(187, 15);
129             this.button1.Name = "button1";
130             this.button1.Size = new System.Drawing.Size(75, 23);
131             this.button1.TabIndex = 8;
132             this.button1.Text = "打开图片";
133             this.button1.UseVisualStyleBackColor = true;
134             this.button1.Click += new System.EventHandler(this.button1_Click);
135             // 
136 // Form1
137 // 
138             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
139             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
140             this.ClientSize = new System.Drawing.Size(304, 218);
141             this.Controls.Add(this.groupBox1);
142             this.MaximizeBox = false;
143             this.MinimizeBox = false;
144             this.Name = "Form1";
145             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
146             this.Text = "利用图片对文件进行加密与解密";
147             this.groupBox1.ResumeLayout(false);
148             this.groupBox1.PerformLayout();
149             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
150             this.ResumeLayout(false);
151 
152         }
153 
154         #endregion
155 
156         private System.Windows.Forms.GroupBox groupBox1;
157         private System.Windows.Forms.Button button4;
158         private System.Windows.Forms.Button button3;
159         private System.Windows.Forms.TextBox textBox1;
160         private System.Windows.Forms.Button button2;
161         private System.Windows.Forms.Label label2;
162         private System.Windows.Forms.Label label1;
163         private System.Windows.Forms.PictureBox pictureBox1;
164         private System.Windows.Forms.Button button1;
165         private System.Windows.Forms.OpenFileDialog openFileDialog1;
166     }
167 }

作者：墨明棋妙
出处：http://www.cnblogs.com/ynbt/
关于作者：专注于.Net、WCF和移动互联网开发。
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，如有问题，可以通过ynbt_wang@163.com联系我，非常感谢。。

posted on 2012-04-27 13:29 纳米程序员阅读(684) 评论(0) 编辑收藏举报

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