passworddes.cs

关于C#用DES对文件加解密操作及用C#操作SQL Server图像处理

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.IO;
using System.Security.Cryptography;

namespace Full
{
	/// <summary>
	/// PasswordDES 的摘要说明。
	/// </summary>
	public class PasswordDES : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox txtAddPassword;
		private System.Windows.Forms.TextBox txtAddPasswordOut;
		private System.Windows.Forms.Button btnBrower1;
		private System.Windows.Forms.Button btnAddPassword;
		private System.Windows.Forms.TextBox txtPassword;
		private System.Windows.Forms.TextBox txtPasswordResect;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.TextBox txtPasswordIn;
		private System.Windows.Forms.Button btnPassword;
		private System.Windows.Forms.Button btnBrower2;
		private System.Windows.Forms.TextBox txtPasswordOutFile;
		private System.Windows.Forms.TextBox txtAddPasswordFile;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.Label label8;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public PasswordDES()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(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.groupBox1 = new System.Windows.Forms.GroupBox();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.txtAddPassword = new System.Windows.Forms.TextBox();
			this.txtAddPasswordOut = new System.Windows.Forms.TextBox();
			this.btnBrower1 = new System.Windows.Forms.Button();
			this.btnAddPassword = new System.Windows.Forms.Button();
			this.txtPassword = new System.Windows.Forms.TextBox();
			this.txtPasswordResect = new System.Windows.Forms.TextBox();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.txtPasswordIn = new System.Windows.Forms.TextBox();
			this.btnPassword = new System.Windows.Forms.Button();
			this.btnBrower2 = new System.Windows.Forms.Button();
			this.txtPasswordOutFile = new System.Windows.Forms.TextBox();
			this.txtAddPasswordFile = new System.Windows.Forms.TextBox();
			this.label5 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.label8 = new System.Windows.Forms.Label();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.groupBox1.SuspendLayout();
			this.groupBox2.SuspendLayout();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.txtPasswordResect);
			this.groupBox1.Controls.Add(this.txtPassword);
			this.groupBox1.Controls.Add(this.btnAddPassword);
			this.groupBox1.Controls.Add(this.btnBrower1);
			this.groupBox1.Controls.Add(this.txtAddPasswordOut);
			this.groupBox1.Controls.Add(this.txtAddPassword);
			this.groupBox1.Controls.Add(this.label4);
			this.groupBox1.Controls.Add(this.label3);
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Controls.Add(this.label1);
			this.groupBox1.Location = new System.Drawing.Point(8, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(344, 144);
			this.groupBox1.TabIndex = 0;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "加密设置";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 16);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "被加密文件名";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(8, 48);
			this.label2.Name = "label2";
			this.label2.TabIndex = 1;
			this.label2.Text = "加密输出文件";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(8, 80);
			this.label3.Name = "label3";
			this.label3.TabIndex = 2;
			this.label3.Text = "设密大于6位";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(8, 112);
			this.label4.Name = "label4";
			this.label4.TabIndex = 3;
			this.label4.Text = "重设密码";
			// 
			// txtAddPassword
			// 
			this.txtAddPassword.Location = new System.Drawing.Point(112, 16);
			this.txtAddPassword.Name = "txtAddPassword";
			this.txtAddPassword.Size = new System.Drawing.Size(224, 21);
			this.txtAddPassword.TabIndex = 4;
			this.txtAddPassword.Text = "textBox1";
			// 
			// txtAddPasswordOut
			// 
			this.txtAddPasswordOut.Location = new System.Drawing.Point(112, 48);
			this.txtAddPasswordOut.Name = "txtAddPasswordOut";
			this.txtAddPasswordOut.Size = new System.Drawing.Size(224, 21);
			this.txtAddPasswordOut.TabIndex = 5;
			this.txtAddPasswordOut.Text = "textBox2";
			// 
			// btnBrower1
			// 
			this.btnBrower1.Location = new System.Drawing.Point(256, 80);
			this.btnBrower1.Name = "btnBrower1";
			this.btnBrower1.TabIndex = 6;
			this.btnBrower1.Text = "浏览文件";
			this.btnBrower1.Click += new System.EventHandler(this.btnBrower1_Click);
			// 
			// btnAddPassword
			// 
			this.btnAddPassword.Location = new System.Drawing.Point(256, 112);
			this.btnAddPassword.Name = "btnAddPassword";
			this.btnAddPassword.TabIndex = 7;
			this.btnAddPassword.Text = "加密文件";
			this.btnAddPassword.Click += new System.EventHandler(this.btnAddPassword_Click);
			// 
			// txtPassword
			// 
			this.txtPassword.Location = new System.Drawing.Point(112, 80);
			this.txtPassword.Name = "txtPassword";
			this.txtPassword.PasswordChar = '*';
			this.txtPassword.TabIndex = 8;
			this.txtPassword.Text = "textBox3";
			// 
			// txtPasswordResect
			// 
			this.txtPasswordResect.Location = new System.Drawing.Point(112, 112);
			this.txtPasswordResect.Name = "txtPasswordResect";
			this.txtPasswordResect.PasswordChar = '*';
			this.txtPasswordResect.TabIndex = 9;
			this.txtPasswordResect.Text = "textBox4";
			// 
			// groupBox2
			// 
			this.groupBox2.Controls.Add(this.txtPasswordIn);
			this.groupBox2.Controls.Add(this.btnPassword);
			this.groupBox2.Controls.Add(this.btnBrower2);
			this.groupBox2.Controls.Add(this.txtPasswordOutFile);
			this.groupBox2.Controls.Add(this.txtAddPasswordFile);
			this.groupBox2.Controls.Add(this.label5);
			this.groupBox2.Controls.Add(this.label7);
			this.groupBox2.Controls.Add(this.label8);
			this.groupBox2.Location = new System.Drawing.Point(8, 168);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(344, 144);
			this.groupBox2.TabIndex = 1;
			this.groupBox2.TabStop = false;
			this.groupBox2.Text = "解密设置";
			// 
			// txtPasswordIn
			// 
			this.txtPasswordIn.Location = new System.Drawing.Point(112, 80);
			this.txtPasswordIn.Name = "txtPasswordIn";
			this.txtPasswordIn.PasswordChar = '*';
			this.txtPasswordIn.TabIndex = 9;
			this.txtPasswordIn.Text = "textBox4";
			// 
			// btnPassword
			// 
			this.btnPassword.Location = new System.Drawing.Point(256, 112);
			this.btnPassword.Name = "btnPassword";
			this.btnPassword.TabIndex = 7;
			this.btnPassword.Text = "解密文件";
			this.btnPassword.Click += new System.EventHandler(this.btnPassword_Click);
			// 
			// btnBrower2
			// 
			this.btnBrower2.Location = new System.Drawing.Point(256, 80);
			this.btnBrower2.Name = "btnBrower2";
			this.btnBrower2.TabIndex = 6;
			this.btnBrower2.Text = "浏览文件";
			this.btnBrower2.Click += new System.EventHandler(this.btnBrower2_Click);
			// 
			// txtPasswordOutFile
			// 
			this.txtPasswordOutFile.Location = new System.Drawing.Point(112, 48);
			this.txtPasswordOutFile.Name = "txtPasswordOutFile";
			this.txtPasswordOutFile.Size = new System.Drawing.Size(224, 21);
			this.txtPasswordOutFile.TabIndex = 5;
			this.txtPasswordOutFile.Text = "textBox2";
			// 
			// txtAddPasswordFile
			// 
			this.txtAddPasswordFile.Location = new System.Drawing.Point(112, 16);
			this.txtAddPasswordFile.Name = "txtAddPasswordFile";
			this.txtAddPasswordFile.Size = new System.Drawing.Size(224, 21);
			this.txtAddPasswordFile.TabIndex = 4;
			this.txtAddPasswordFile.Text = "textBox1";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(8, 80);
			this.label5.Name = "label5";
			this.label5.TabIndex = 3;
			this.label5.Text = "输入密码";
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(8, 48);
			this.label7.Name = "label7";
			this.label7.TabIndex = 1;
			this.label7.Text = "解密输出文件";
			// 
			// label8
			// 
			this.label8.Location = new System.Drawing.Point(8, 16);
			this.label8.Name = "label8";
			this.label8.TabIndex = 0;
			this.label8.Text = "被加密文件名";
			// 
			// PasswordDES
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(360, 317);
			this.Controls.Add(this.groupBox2);
			this.Controls.Add(this.groupBox1);
			this.Name = "PasswordDES";
			this.Text = "PasswordDES";
			this.groupBox1.ResumeLayout(false);
			this.groupBox2.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		//打开文件
		private void btnBrower1_Click(object sender, System.EventArgs e)
		{
			if(this.openFileDialog1.ShowDialog() == DialogResult.OK)
			{
				this.txtAddPassword.Text = this.openFileDialog1.FileName;
			}
		}

		//加密文件
		private void btnAddPassword_Click(object sender, System.EventArgs e)
		{
			if(this.txtAddPassword.Text == "")
			{
				MessageBox.Show("请选择被加密文件!");
				return;
			}
			if(this.txtAddPasswordOut.Text == "")
			{
				MessageBox.Show("请选择加密输出文件!");
				return;
			}
			if(this.txtPassword.Text.Length < 6 | this.txtPassword.Text != this.txtPasswordResect.Text)
			{
				MessageBox.Show("请输入正确密码文件!");
				return;
			}
			
			string myInFileName = this.txtAddPassword.Text;
			string myOutFileName = this.txtAddPasswordOut.Text;
			string myKeyString = this.txtPassword.Text;
			byte[] myDESIV = {0 * 01,0 * 02,0 * 03,0 * 04,0 * 05,0 * 06,0 * 07,0 * 08};
			byte[] myDESKey = {};
			if(myKeyString.Length == 6)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],0 * 07,0 * 08};
			}
			if(myKeyString.Length == 7)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],(byte)myKeyString[6],0 * 07};
			}
			if(myKeyString.Length >= 8)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],(byte)myKeyString[6],(byte)myKeyString[7]};
			}
			FileStream myInFileStream = new FileStream(myInFileName,FileMode.Open,FileAccess.Read);
			FileStream myOutFileStream = new FileStream(myOutFileName,FileMode.OpenOrCreate,FileAccess.Write);
			myOutFileStream.SetLength(0);
			byte[] insertData = new byte[100];
			int completedLength = 0;
			long inFileSize = myInFileStream.Length;
			DES myDES = new DESCryptoServiceProvider();
			CryptoStream encryptStream = new CryptoStream(myOutFileStream,myDES.CreateEncryptor(myDESKey,myDESIV),CryptoStreamMode.Write);
			while(completedLength < inFileSize)
			{
				int length = myInFileStream.Read(insertData,0,100);
				encryptStream.Write(insertData,0,length);
				completedLength = completedLength + length;
			}
			encryptStream.Close();
			myOutFileStream.Close();
			myInFileStream.Close();
			MessageBox.Show("加密成功");

		}

		private void btnBrower2_Click(object sender, System.EventArgs e)
		{
			if(this.openFileDialog1.ShowDialog() == DialogResult.OK)
			{
				this.txtAddPasswordFile.Text = this.openFileDialog1.FileName;
			}
		}

		private void btnPassword_Click(object sender, System.EventArgs e)
		{
			if(this.txtAddPasswordFile.Text == "")
			{
				MessageBox.Show("请选择被解密文件!");
				return;
			}
			if(this.txtPasswordOutFile.Text == "")
			{
				MessageBox.Show("请选择解密输出文件!");
				return;
			}
			if(this.txtPasswordIn.Text.Length < 6)
			{
				MessageBox.Show("请输入正确密码文件!");
				return;
			}
			string myInFileName = this.txtAddPasswordFile.Text;
			string myOutFileName = this.txtPasswordOutFile.Text;
			string myKeyString = this.txtPasswordIn.Text;
			byte[] myDESIV = {0 * 01,0 * 02,0 * 03,0 * 04,0 * 05,0 * 06,0 * 07,0 * 08};
			byte[] myDESKey = {};
			if(myKeyString.Length == 6)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],0 * 07,0 * 08};
			}
			if(myKeyString.Length == 7)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],(byte)myKeyString[6],0 * 07};
			}
			if(myKeyString.Length >= 8)
			{
				myDESKey = new byte[] {(byte)myKeyString[0],(byte)myKeyString[1],(byte)myKeyString[2],(byte)myKeyString[3],(byte)myKeyString[4],(byte)myKeyString[5],(byte)myKeyString[6],(byte)myKeyString[7]};
			}
			FileStream myInFileStream = new FileStream(myInFileName,FileMode.Open,FileAccess.Read);
			FileStream myOutFileStream = new FileStream(myOutFileName,FileMode.OpenOrCreate,FileAccess.Write);
			myOutFileStream.SetLength(0);
			byte[] insertData = new byte[100];
			int completedLength = 0;
			long inFileSize = myInFileStream.Length;
			DES myDES = new DESCryptoServiceProvider();
			CryptoStream encryptStream = new CryptoStream(myOutFileStream,myDES.CreateDecryptor(myDESKey,myDESIV),CryptoStreamMode.Write);
			while(completedLength < inFileSize)
			{
				int length = myInFileStream.Read(insertData,0,100);
				encryptStream.Write(insertData,0,length);
				completedLength = completedLength + length;
			}
			encryptStream.Close();
			myOutFileStream.Close();
			myInFileStream.Close();
			MessageBox.Show("加密成功");
		}
	}
}