Form1.cs

View Code

  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.Security.Cryptography;
 10 using System.IO;
 11 
 12 namespace EncryptTextFileOne
 13 {
 14     public partial class Form1 : Form
 15     {
 16         public Form1()
 17         {
 18             InitializeComponent();
 19         }
 20 
 21         //选择加密解密文件路径
 22         private void button1_Click(object sender, EventArgs e)
 23         {
 24             openFileDialog1.Filter = "文本文件|*.txt|*.*|*.*";
 25             if (openFileDialog1.ShowDialog() == DialogResult.OK)
 26             {
 27                 textBox1.Text = openFileDialog1.FileName;
 28             }
 29         }
 30         ///*************************/
 31 
 32         //加密
 33         private void button2_Click(object sender, EventArgs e)
 34         {
 35             if (textBox1.Text == "")
 36             { MessageBox.Show("请选择要加密的文件"); }
 37             else
 38             {
 39                 try
 40                 {
 41                     string strPath = textBox1.Text;//加密文件的路径
 42                     int intLent = strPath.LastIndexOf("\\") + 1;
 43                     int intLong = strPath.Length;
 44                     string strName = strPath.Substring(intLent, intLong - intLent);//要加密的文件名称
 45                     int intTxt = strName.LastIndexOf(".");
 46                     int intTextLeng = strName.Length;
 47                     string strTxt = strName.Substring(intTxt, intTextLeng - intTxt);//取出文件的扩展名
 48                     strName = strName.Substring(0, intTxt);
 49                     //加密后的文件名及路径
 50                     string strOutName = strPath.Substring(0, strPath.LastIndexOf("\\") + 1) + strName + "Out" + strTxt;
 51                     byte[] key = { 24, 55, 102, 24, 98, 26, 67, 29, 84, 19, 37, 118, 104, 85, 121, 27, 93, 86, 24, 55, 102, 24, 98, 26, 67, 29, 9, 2, 49, 69, 73, 92 };
 52                     byte[] IV = { 22, 56, 82, 77, 84, 31, 74, 24, 55, 102, 24, 98, 26, 67, 29, 99 };
 53                     RijndaelManaged myRijndael = new RijndaelManaged();
 54                     FileStream fsOut = File.Open(strOutName, FileMode.Create, FileAccess.Write);
 55                     FileStream fsIn = File.Open(strPath, FileMode.Open, FileAccess.Read);
 56                     //写入加密文本文件
 57                     CryptoStream csDecrypt = new CryptoStream(fsOut, myRijndael.CreateEncryptor(key, IV), CryptoStreamMode.Write);
 58                     //读加密文本
 59                     BinaryReader br = new BinaryReader(fsIn);
 60                     csDecrypt.Write(br.ReadBytes((int)fsIn.Length), 0, (int)fsIn.Length);
 61                     csDecrypt.FlushFinalBlock();
 62                     csDecrypt.Close();
 63                     fsIn.Close();
 64                     fsOut.Close();
 65                     if (MessageBox.Show("加密成功!加密后的文件名及路径为:\n" + strOutName + ",是否册除源文件", "信息提示", MessageBoxButtons.YesNo) == DialogResult.Yes)
 66                     {
 67                         File.Delete(strPath);
 68                         textBox1.Text = "";
 69                     }
 70                     else
 71                     { textBox1.Text = ""; }
 72                 }
 73                 catch (Exception ee)
 74                 {
 75                     MessageBox.Show(ee.Message);
 76                 }
 77             }
 78         }
 79 
 80 
 81         //解密
 82         private void button3_Click(object sender, EventArgs e)
 83         {
 84             if (textBox1.Text == "")
 85             {
 86                 MessageBox.Show("请选择要解密的文件路径");
 87             }
 88             else
 89             {
 90                 string strPath = textBox1.Text;//加密文件的路径
 91                 int intLent = strPath.LastIndexOf("\\") + 1;
 92                 int intLong = strPath.Length;
 93                 string strName = strPath.Substring(intLent, intLong - intLent);//要加密的文件名称
 94                 int intTxt = strName.LastIndexOf(".");
 95                 int intTextLeng = strName.Length;
 96                 strName = strName.Substring(0, intTxt);
 97 
 98                 if (strName.LastIndexOf("Out") != -1)
 99                 {
100                     strName = strName.Substring(0, strName.LastIndexOf("Out"));
101 
102                 }
103                 else
104                 {
105                     strName = strName + "In";
106                 }
107                 //加密后的文件名及路径
108                 string strInName = strPath.Substring(0, strPath.LastIndexOf("\\") + 1) + strName + ".txt";
109                 byte[] key = { 24, 55, 102, 24, 98, 26, 67, 29, 84, 19, 37, 118, 104, 85, 121, 27, 93, 86, 24, 55, 102, 24, 98, 26, 67, 29, 9, 2, 49, 69, 73, 92 };
110                 byte[] IV = { 22, 56, 82, 77, 84, 31, 74, 24, 55, 102, 24, 98, 26, 67, 29, 99 };
111                 RijndaelManaged myRijndael = new RijndaelManaged();
112                 FileStream fsOut = File.Open(strPath, FileMode.Open, FileAccess.Read);
113                 CryptoStream csDecrypt = new CryptoStream(fsOut, myRijndael.CreateDecryptor(key, IV), CryptoStreamMode.Read);
114                 StreamReader sr = new StreamReader(csDecrypt);//把文件读出来
115                 StreamWriter sw = new StreamWriter(strInName);//解密后文件写入一个新的文件
116                 sw.Write(sr.ReadToEnd());
117                 sw.Flush();
118                 sw.Close();
119                 sr.Close();
120                 fsOut.Close();
121                 if (MessageBox.Show("解密成功!解密后的文件名及路径为:"+strInName+"，是否册除源文件", "信息提示", MessageBoxButtons.YesNo) == DialogResult.Yes)
122                 {
123                     File.Delete(strPath);
124                     textBox1.Text = "";
125                 }
126                 else
127                 {
128                     textBox1.Text = "";
129                 }
130 
131             }
132         }
133         
134 
135         /***************************/
136     }
137 }

Form1.Designer.cs

View Code

  1 namespace EncryptTextFileOne
  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.button2 = new System.Windows.Forms.Button();
 33             this.button3 = new System.Windows.Forms.Button();
 34             this.button1 = new System.Windows.Forms.Button();
 35             this.textBox1 = new System.Windows.Forms.TextBox();
 36             this.label1 = new System.Windows.Forms.Label();
 37             this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
 38             this.groupBox1.SuspendLayout();
 39             this.SuspendLayout();
 40             // 
 41 // groupBox1
 42 // 
 43             this.groupBox1.Controls.Add(this.button2);
 44             this.groupBox1.Controls.Add(this.button3);
 45             this.groupBox1.Controls.Add(this.button1);
 46             this.groupBox1.Controls.Add(this.textBox1);
 47             this.groupBox1.Controls.Add(this.label1);
 48             this.groupBox1.Location = new System.Drawing.Point(9, 3);
 49             this.groupBox1.Name = "groupBox1";
 50             this.groupBox1.Size = new System.Drawing.Size(302, 108);
 51             this.groupBox1.TabIndex = 1;
 52             this.groupBox1.TabStop = false;
 53             this.groupBox1.Text = "加密与解密";
 54             // 
 55 // button2
 56 // 
 57             this.button2.Location = new System.Drawing.Point(17, 79);
 58             this.button2.Name = "button2";
 59             this.button2.Size = new System.Drawing.Size(75, 23);
 60             this.button2.TabIndex = 7;
 61             this.button2.Text = "加密(&D)";
 62             this.button2.UseVisualStyleBackColor = true;
 63             this.button2.Click += new System.EventHandler(this.button2_Click);
 64             // 
 65 // button3
 66 // 
 67             this.button3.Location = new System.Drawing.Point(211, 79);
 68             this.button3.Name = "button3";
 69             this.button3.Size = new System.Drawing.Size(75, 23);
 70             this.button3.TabIndex = 6;
 71             this.button3.Text = "解密(&F)";
 72             this.button3.UseVisualStyleBackColor = true;
 73             this.button3.Click += new System.EventHandler(this.button3_Click);
 74             // 
 75 // button1
 76 // 
 77             this.button1.Location = new System.Drawing.Point(199, 12);
 78             this.button1.Name = "button1";
 79             this.button1.Size = new System.Drawing.Size(87, 23);
 80             this.button1.TabIndex = 5;
 81             this.button1.Text = "选择文件(&Q)";
 82             this.button1.UseVisualStyleBackColor = true;
 83             this.button1.Click += new System.EventHandler(this.button1_Click);
 84             // 
 85 // textBox1
 86 // 
 87             this.textBox1.Location = new System.Drawing.Point(17, 44);
 88             this.textBox1.Name = "textBox1";
 89             this.textBox1.Size = new System.Drawing.Size(269, 21);
 90             this.textBox1.TabIndex = 4;
 91             // 
 92 // label1
 93 // 
 94             this.label1.AutoSize = true;
 95             this.label1.Location = new System.Drawing.Point(15, 17);
 96             this.label1.Name = "label1";
 97             this.label1.Size = new System.Drawing.Size(65, 12);
 98             this.label1.TabIndex = 3;
 99             this.label1.Text = "文件路径：";
100             // 
101 // Form1
102 // 
103             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
104             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
105             this.ClientSize = new System.Drawing.Size(326, 119);
106             this.Controls.Add(this.groupBox1);
107             this.MaximizeBox = false;
108             this.MinimizeBox = false;
109             this.Name = "Form1";
110             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
111             this.Text = "对文本文件进行加密与解密";
112             this.groupBox1.ResumeLayout(false);
113             this.groupBox1.PerformLayout();
114             this.ResumeLayout(false);
115 
116         }
117 
118         #endregion
119 
120         private System.Windows.Forms.GroupBox groupBox1;
121         private System.Windows.Forms.Button button2;
122         private System.Windows.Forms.Button button3;
123         private System.Windows.Forms.Button button1;
124         private System.Windows.Forms.TextBox textBox1;
125         private System.Windows.Forms.Label label1;
126         private System.Windows.Forms.OpenFileDialog openFileDialog1;
127     }
128 }

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 13:30 纳米程序员阅读(912) 评论(0) 编辑收藏举报

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