C# 对称算法,加密解密类
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**************************************************************************/
using System.Text;
using System.IO;
using System;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
namespace LHCHIP.Common
...{
/**//// <summary>
/// 对称加密算法类
/// </summary>
public class DecryptEncrypt
...{
/**//// <summary>
/// 返回自身的一个类
/// </summary>
public static DecryptEncrypt MyDecryptEncrypt
...{
get
...{
return new DecryptEncrypt();
}
}
else if (_TempKey.Length < KeyLength)
_TempKey = _TempKey.PadRight(KeyLength, ’ ’);
return ASCIIEncoding.ASCII.GetBytes(_TempKey);
}
/**//// <summary>
/// 获得初始向量IV
/// </summary>
/// <returns>初试向量IV</returns>
private byte[] GetLegalIV()
...{
string _TempIV = "@afetj*Ghg7!rNIfsgr95GUqd9gsrb#GG7HBh(urjj6HJ($jhWk7&!hjjri%$hjk";
mobjCryptoService.GenerateIV();
byte[] bytTemp = mobjCryptoService.IV;
int IVLength = bytTemp.Length;
if (_TempIV.Length > IVLength)
_TempIV = _TempIV.Substring(0, IVLength);
else if (_TempIV.Length < IVLength)
_TempIV = _TempIV.PadRight(IVLength, ’ ’);
return ASCIIEncoding.ASCII.GetBytes(_TempIV);
}
/**//// <summary>
/// 加密方法
/// </summary>
/// <param name="Source">待加密的串</param>
/// <returns>经过加密的串</returns>
public string Encrypto(string Source)
...{
byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
MemoryStream ms = new MemoryStream();
mobjCryptoService.Key = GetLegalKey(); #p#分页标题#e#
mobjCryptoService.IV = GetLegalIV();
//创建对称加密器对象
private SymmetricAlgorithm mobjCryptoService;
private string Key;
/**//// <summary>
/// 对称加密类的构造函数
/// </summary>
internal DecryptEncrypt()
...{
mobjCryptoService = new RijndaelManaged();
Key = "rrp(%&h70x89H$jgsfgfsI0456Ftma81&fvHrr&&76*h%(12lJ$lhj!y6&(*jkPer44a";
}
/**//// <summary>
/// 获得密钥
/// </summary>
/// <returns>密钥</returns>
private byte[] GetLegalKey()
...{
string _TempKey = Key;
mobjCryptoService.GenerateKey();
byte[] bytTemp = mobjCryptoService.Key;
int KeyLength = bytTemp.Length;
if (_TempKey.Length > KeyLength)