啥也不说，直接上代码。
加密解码，封装到一个类，key可以自己修改。
using System;
using System.Security.Cryptography;
using System.Text;
using System.IO; namespace Common
...{
/**//// <summary>
/// DESEncrypt加密解密算法。
/// </summary>
public sealed class DESEncrypt
...{
private DESEncrypt()
...{
//
// TODO: 在此处添加构造函数逻辑
//
} private static string key = "joke168"; /**//// <summary>
/// 对称加密解密的密钥
/// </summary>
public static string Key
...{
get
...{
return key;
}
set
...{
key = value;
}
} /**//// <summary>
/// DES加密
/// </summary>
/// <param name="encryptString"></param>
/// <returns></returns>
public static string DesEncrypt(string encryptString)
...{
byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8));
byte[] keyIV = keyBytes;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
} /**//// <summary>
/// DES解密
/// </summary>
/// <param name="decryptString"></param>
/// <returns></returns>
public static string DesDecrypt(string decryptString)
...{
byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8));
byte[] keyIV = keyBytes;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
}
}
欢迎批评指正。