C# 对称算法,加密解密类
C# 对称算法,加密解密类
调用有先获取类实例,提供了解密和加密函数。
调用有先获取类实例,提供了解密和加密函数。
using System.IO;
using System;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
/**/
/// <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();
}
}
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)
_TempKey = _TempKey.Substring(0, KeyLength);
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();
mobjCryptoService.IV = GetLegalIV();
//创建对称加密器对象 [Page]
ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
//定义将数据流链接到加密转换的流
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, 0, bytIn.Length);
cs.FlushFinalBlock();
ms.Close();
byte[] bytOut = ms.ToArray();
return Convert.ToBase64String(bytOut);
}
/**/
/// <summary>
/// 解密方法
/// </summary>
/// <param name=\"Source\">待解密的串</param>
/// <returns>经过解密的串</returns>
public string Decrypto(string Source)
{
byte[] bytIn = Convert.FromBase64String(Source);
MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
mobjCryptoService.Key = GetLegalKey();
mobjCryptoService.IV = GetLegalIV();
//创建对称解密器对象
ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
//定义将数据流链接到加密转换的流
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
return sr.ReadToEnd();
}
}
using System;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
/**/
/// <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();
}
}
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)
_TempKey = _TempKey.Substring(0, KeyLength);
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();
mobjCryptoService.IV = GetLegalIV();
//创建对称加密器对象 [Page]
ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
//定义将数据流链接到加密转换的流
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, 0, bytIn.Length);
cs.FlushFinalBlock();
ms.Close();
byte[] bytOut = ms.ToArray();
return Convert.ToBase64String(bytOut);
}
/**/
/// <summary>
/// 解密方法
/// </summary>
/// <param name=\"Source\">待解密的串</param>
/// <returns>经过解密的串</returns>
public string Decrypto(string Source)
{
byte[] bytIn = Convert.FromBase64String(Source);
MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
mobjCryptoService.Key = GetLegalKey();
mobjCryptoService.IV = GetLegalIV();
//创建对称解密器对象
ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
//定义将数据流链接到加密转换的流
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
return sr.ReadToEnd();
}
}