VS中用C#编写一个DES（或3DES)加解密的Windows应用程序
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窗体中设三个TextBox,用来输入八字节的明文(或密文)、密钥和输出加密（或解密）后的数据（都是十六进制数据）；设两个Button,分别为加密和解密。初学者求码，谢谢！
谢谢1.2楼的回答！可是我新手却实现不了。而且想要的是输入输出都为十六进制的数，想做一个相当于一个十六制的运算器。我最终的目的是通过这个学习，新添加一些异或等运算制作达到方便工作所需的计算器。
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace ZU14
public partial class Form1 : Form
public Form1()
InitializeComponent();
//ZU14.DES des = new ZU14.DES();
ZU14.DES des = null;
private void btn_jiami_Click(object sender, EventArgs e)
textBox2.Text = des.Encrypt(textBox1.Text);
// MessageBox.Show("加密成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
private void btn_jiemi_Click(object sender, EventArgs e)
textBox3.Text = des.Decrypt(textBox2.Text);
//MessageBox.Show("解密成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
private void btn_wjjiami_Click(object sender, EventArgs e)
OpenFileDialog open = new OpenFileDialog();
open.InitialDirectory = @"d:\";
open.Filter = "文本文件(*.txt,*.doc,*.xls)|*.txt;*.doc;*.xls";
if (open.ShowDialog()== DialogResult.OK)
des.EncryptFile(open.FileName, open.FileName);
MessageBox.Show("加密成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
private void btn_wjjiemi_Click(object sender, EventArgs e)
OpenFileDialog open = new OpenFileDialog();
open.InitialDirectory = @"d:\";
open.Filter = "文本文件(*.txt,*.doc,*.xls)|*.txt;*.doc;*.xls";
if (open.ShowDialog() == DialogResult.OK)
des.DecryptFile(open.FileName);
MessageBox.Show("解密成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
private void button1_Click(object sender, EventArgs e)
zifu.setmisi1 = textBox4.Text.Trim();
zifu.setmisi2 = textBox5.Text.Trim();
des = new ZU14.DES();
上面的代码是窗体的
下面是调用的两个类的
using System;
using System.Collections.Generic;
using System.Text;
namespace ZU14
class zifu
private static string misi1;
private static string misi2;
public static string getmisi1
get
return misi1;
public static string setmisi1
set
misi1 = value;
public static string getmisi2
get
return misi2;
public static string setmisi2
set
misi2 = value;
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Security;
using System.Security.Cryptography;
using System.Collections;
using System.Data;
using System.Windows.Forms;
namespace ZU14
class DES
string iv =zifu.getmisi1; //"1234的yza";
string key = zifu.getmisi2;//"123在yzb";
/// <summary>
/// DES加密偏移量，必须是>=8位长的字符串
/// </summary>
public string IV
get return iv;
set iv = value;
/// <summary>
/// DES加密的私钥，必须是8位长的字符串
/// </summary>
public string Key
get return key;
set key = value;
/// <summary>
/// 对字符串进行DES加密
/// </summary>
/// <param name="sourceString">待加密的字符串</param>
/// <returns>加密后的BASE64编码的字符串</returns>
public string Encrypt(string sourceString)
byte[] btKey = Encoding.Default.GetBytes(key);
byte[] btIV = Encoding.Default.GetBytes(iv);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
using (MemoryStream ms = new MemoryStream())
byte[] inData = Encoding.Default.GetBytes(sourceString);
try
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write))
cs.Write(inData, 0, inData.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
catch
throw;
/// <summary>
/// 对DES加密后的字符串进行解密
/// </summary>
/// <param name="encryptedString">待解密的字符串</param>
/// <returns>解密后的字符串</returns>
public string Decrypt(string encryptedString)
byte[] btKey = Encoding.Default.GetBytes(key);
byte[] btIV = Encoding.Default.GetBytes(iv);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
using (MemoryStream ms = new MemoryStream())
byte[] inData = Convert.FromBase64String(encryptedString);
try
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(btKey, btIV), CryptoStreamMode.Write))
cs.Write(inData, 0, inData.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
catch
throw;
/// <summary>
/// 对文件内容进行DES加密
/// </summary>
/// <param name="sourceFile">待加密的文件绝对路径</param>
/// <param name="destFile">加密后的文件保存的绝对路径</param>
public void EncryptFile(string sourceFile, string destFile)
if (!File.Exists(sourceFile)) throw new FileNotFoundException("指定的文件路径不存在！", sourceFile);
byte[] btKey = Encoding.Default.GetBytes(key);
byte[] btIV = Encoding.Default.GetBytes(iv);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] btFile = File.ReadAllBytes(sourceFile);
using (FileStream fs = new FileStream(destFile, FileMode.Create, FileAccess.Write))
try
using (CryptoStream cs = new CryptoStream(fs, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write))
cs.Write(btFile, 0, btFile.Length);
cs.FlushFinalBlock();
catch
// throw;
finally
fs.Close();
/// <summary>
/// 对文件内容进行DES加密，加密后覆盖掉原来的文件
/// </summary>
/// <param name="sourceFile">待加密的文件的绝对路径</param>
public void EncryptFile(string sourceFile)
EncryptFile(sourceFile, sourceFile);
/// <summary>
/// 对文件内容进行DES解密
/// </summary>
/// <param name="sourceFile">待解密的文件绝对路径</param>
/// <param name="destFile">解密后的文件保存的绝对路径</param>
public void DecryptFile(string sourceFile, string destFile)
if (!File.Exists(sourceFile)) throw new FileNotFoundException("指定的文件路径不存在！", sourceFile);
byte[] btKey = Encoding.Default.GetBytes(key);
byte[] btIV = Encoding.Default.GetBytes(iv);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] btFile = File.ReadAllBytes(sourceFile);
using (FileStream fs = new FileStream(destFile, FileMode.Create, FileAccess.Write))
try
using (CryptoStream cs = new CryptoStream(fs, des.CreateDecryptor(btKey, btIV), CryptoStreamMode.Write))
cs.Write(btFile, 0, btFile.Length);
cs.FlushFinalBlock();
catch
// MessageBox.Show(ex.Message);
//throw;
finally
fs.Close();
/// <summary>
/// 对文件内容进行DES解密，加密后覆盖掉原来的文件
/// </summary>
/// <param name="sourceFile">待解密的文件的绝对路径</param>
public void DecryptFile(string sourceFile)
DecryptFile(sourceFile, sourceFile);
有什么看不明白的，再联系我，我的账号就是我的QQ 参考技术A 这是csdn上高手 周公 的博文（DES加密解密），你看看，很有价值。
地址：http://blog.csdn.net/zhoufoxcn/archive/2007/01/29/1497095.aspx
里面只是加密解密的源代码 ，你要winform的，直接将这些加密解密代码放到你的winform程序里面就行，将要加密的字符串从你的textbox种获取就行。
C#的DES文件加解密工具类
using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO;
namespace www.xinduofen.com
{
class FileDES
{
///
/// 加密文件随机数生成
///
private static RandomNumberGenerator rand = new RNGCryptoServiceProvider();
private const ulong FC_TAG = 0xFC010203040506CF;
private const int BUFFER_SIZE = 32 * 1024;
///
/// 异常内部处理类
///
private class CryptoHelpException : ApplicationException
{
public CryptoHelpException(string msg) : base(msg) { }
}
///
/// 加密文件，此方法不对异常进行处理，需要调用方进行捕获
///
/// 待加密文件
/// 加密后输出文件
/// 加密密码
/// 方法未产生任何异常 - 成功
public static void EncryptFile(string inFile, string outFile, string password)
{
using (FileStream fin = File.OpenRead(inFile),
fout = File.OpenWrite(outFile))
{
// 获取IV和salt
byte[] IV = GenerateRandomBytes(16);
byte[] salt = GenerateRandomBytes(16);
// 创建加密对象
SymmetricAlgorithm sma = FileDES.CreateRijndael(password, salt);
sma.IV = IV;
// 在输出文件开始部分写入IV和salt
fout.Write(IV, 0, IV.Length);
fout.Write(salt, 0, salt.Length);
// 创建散列加密
HashAlgorithm hasher = SHA256.Create();
long lSize = fin.Length; // 输入文件长度
byte[] bytes = new byte[BUFFER_SIZE]; // 缓存
int read = -1; // 输入文件读取数量
int value = 0;
using (CryptoStream cout = new CryptoStream(fout, sma.CreateEncryptor(), CryptoStreamMode.Write),
chash = new CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
BinaryWriter bw = new BinaryWriter(cout);
bw.Write(lSize);
bw.Write(FC_TAG);
// 读写字节块到加密流缓冲区
while ((read = fin.Read(bytes, 0, bytes.Length)) != 0)
{
cout.Write(bytes, 0, read);
chash.Write(bytes, 0, read);
value += read;
}
// 关闭加密流
chash.Flush();
chash.Close();
// 读取散列
byte[] hash = hasher.Hash;
// 输入文件写入散列
cout.Write(hash, 0, hash.Length);
// 关闭文件流
cout.Flush();
cout.Close();
}
}
}
///
/// 解密文件，此方法不对异常进行处理，需要调用方进行捕获
///
/// 待解密文件
/// 解密后输出文件
/// 解密密码
/// 方法未产生任何异常 - 成功
public static void DecryptFile(string inFile, string outFile, string password)
{
// 创建打开文件流
using (FileStream fin = File.OpenRead(inFile),
fout = File.OpenWrite(outFile))
{
int size = (int)fin.Length;
byte[] bytes = new byte[BUFFER_SIZE];
int read = -1;
int value = 0;
int outValue = 0;
byte[] IV = new byte[16];
fin.Read(IV, 0, 16);
byte[] salt = new byte[16];
fin.Read(salt, 0, 16);
SymmetricAlgorithm sma = FileDES.CreateRijndael(password, salt);
sma.IV = IV;
value = 32;
long lSize = -1;
// 创建散列对象, 校验文件
HashAlgorithm hasher = SHA256.Create();
using (CryptoStream cin = new CryptoStream(fin, sma.CreateDecryptor(), CryptoStreamMode.Read),
chash = new CryptoStream(Stream.Null, hasher, CryptoStreamMode.Write))
{
// 读取文件长度
BinaryReader br = new BinaryReader(cin);
lSize = br.ReadInt64();
ulong tag = br.ReadUInt64();
if (FC_TAG != tag)
throw new CryptoHelpException("文件被破坏");
long numReads = lSize / BUFFER_SIZE;
long slack = (long)lSize % BUFFER_SIZE;
for (int i = 0; i < numReads; ++i)
{
read = cin.Read(bytes, 0, bytes.Length);
fout.Write(bytes, 0, read);
chash.Write(bytes, 0, read);
value += read;
outValue += read;
}
if (slack > 0)
{
read = cin.Read(bytes, 0, (int)slack);
fout.Write(bytes, 0, read);
chash.Write(bytes, 0, read);
value += read;
outValue += read;
}
chash.Flush();
chash.Close();
fout.Flush();
fout.Close();
byte[] curHash = hasher.Hash;
// 获取比较和旧的散列对象
byte[] oldHash = new byte[hasher.HashSize / 8];
read = cin.Read(oldHash, 0, oldHash.Length);
if ((oldHash.Length != read) || (!CheckByteArrays(oldHash, curHash)))
throw new CryptoHelpException("文件被破坏");
}
if (outValue != lSize)
throw new CryptoHelpException("文件大小不匹配");
}
}
///
/// 创建加密对象
///
/// 密码
/// 密钥salt
/// 加密对象
private static SymmetricAlgorithm CreateRijndael(string password, byte[] salt)
{
PasswordDeriveBytes pdb = new PasswordDeriveBytes(password, salt, "SHA256", 1000);
SymmetricAlgorithm sma = Rijndael.Create();
sma.KeySize = 256;
sma.Key = pdb.GetBytes(32);
sma.Padding = PaddingMode.PKCS7;
return sma;
}
///
/// 检验两个Byte数组是否相同
///
/// Byte数组
/// Byte数组
/// true－相等
private static bool CheckByteArrays(byte[] b1, byte[] b2)
{
if (b1.Length == b2.Length)
{
for (int i = 0; i < b1.Length; ++i)
{
if (b1[i] != b2[i])
return false;
}
return true;
}
return false;
}
///
/// 生成指定长度的随机Byte数组
///
/// Byte数组长度
/// 随机Byte数组
private static byte[] GenerateRandomBytes(int count)
{
byte[] bytes = new byte[count];
rand.GetBytes(bytes);
return bytes;
}
}
}
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