C# DES和3DES加密类

最新推荐文章于 2025-07-19 11:24:18 发布

原创最新推荐文章于 2025-07-19 11:24:18 发布 · 1.3k 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#加密 #c# #byte #64bit #string #class

程序人生专栏收录该内容

45 篇文章

订阅专栏

本文介绍了一个使用Triple DES算法实现数据加密和解密的C#类。该类支持128位和192位密钥，并提供了两个构造函数来初始化密钥和向量。此外，还详细展示了如何通过创建加密器和解密器对象来进行数据加密和解密的过程。

using System; using System.Collections.Generic; using System.Text; using System.Security.Cryptography; using System.IO; namespace cnlogic { class DES { //DES支持64bit密钥 //static DESCryptoServiceProvider desProvier = new DESCryptoServiceProvider(); //TripleDES（3DES）支持128bit和192bit密钥 static TripleDESCryptoServiceProvider desProvier = new TripleDESCryptoServiceProvider(); byte[] desKey;//密钥 byte[] desIV;//向量 public DES(string desKey) { this.desKey = ASCIIEncoding.ASCII.GetBytes(desKey); this.desIV = this.desKey; } public DES(byte[] desKey) { this.desKey = desKey; this.desIV = this.desKey; } public byte[] DESEncrypt(byte[] plain, int offset, int count) { MemoryStream msEncrypt = new MemoryStream(); CryptoStream csEncrypt = new CryptoStream(msEncrypt, desProvier.CreateEncryptor(desKey, desIV), CryptoStreamMode.Write); csEncrypt.Write(plain, offset, count); csEncrypt.Close(); byte[] bytesCipher = msEncrypt.ToArray(); msEncrypt.Close(); return bytesCipher; } public byte[] DESDecrypt(byte[] cipher) { MemoryStream msDecrypt = new MemoryStream(cipher); CryptoStream csDecrypt = new CryptoStream(msDecrypt, desProvier.CreateDecryptor(desKey, desIV), CryptoStreamMode.Read); MemoryStream msPlain = new MemoryStream(); int b; while ((b = csDecrypt.ReadByte()) != -1) { msPlain.WriteByte((byte)b); } byte[] bytesPlain =msPlain.ToArray(); msPlain.Close(); csDecrypt.Close(); msDecrypt.Close(); return bytesPlain; } } }