using System; using System.Collections.Generic; using System.Text; using System.Security.Cryptography; using System.IO; /// <summary> /// 加密字符 /// </summary> /// <param name=pToEncrypt>加密字符串</param> /// <param name=skey>加密密钥</param> /// <returns>返回加密</returns> public class DescMD5 { public static string skey = "abcdefgh"; public string Skey { get { return skey; } set { skey = value; } } /// <summary> /// 加密函数 /// </summary> /// <param name="pToEncrypt"></param> /// <returns></returns> public string EnCrypt(string pToEncrypt) { //访问数据加密标准(DES)算法的加密服务提供程序 (CSP) 版本的包装对象 DESCryptoServiceProvider des = new DESCryptoServiceProvider(); des.Key = System.Text.ASCIIEncoding.ASCII.GetBytes(skey);//建立加密对象的密钥和偏移量 des.IV = ASCIIEncoding.ASCII.GetBytes(skey); //原文使用ASCIIEncoding.ASCII方法的GetBytes方法 byte[] inputbyteArray = Encoding.Default.GetBytes(pToEncrypt);//把字符串放到byte数组中 MemoryStream ms = new MemoryStream();//创建其支持存储区为内存的流
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(inputbyteArray, 0, inputbyteArray.Length); cs.FlushFinalBlock();//上面已经完成了把加密后的结果放到内存中去 StringBuilder ret = new StringBuilder(); foreach (byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}", b);
} return ret.ToString(); }
/// <summary> /// 解密ESC函数 /// </summary> /// <param name="pToDecrypt">被解密的字符串</param> /// <param name="sKey">密钥(只支持8个字节的密钥,同前面的加密密钥相同)</param> /// <returns>返回被解密的字符串</returns> public string DeCrypt(string pToDecrypt) { DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte []inputbyteArray=new byte[pToDecrypt.Length/2]; for (int i = 0; i < pToDecrypt.Length / 2; i++) { int x = Convert.ToInt32(pToDecrypt.Substring(i * 2, 2), 16); inputbyteArray[i] = (byte)x;
} des.Key = ASCIIEncoding.ASCII.GetBytes(skey); des.IV = ASCIIEncoding.ASCII.GetBytes(skey); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputbyteArray, 0, inputbyteArray.Length); cs.FlushFinalBlock(); return System.Text.Encoding.Default.GetString(ms.ToArray()); } public DescMD5() { } }
http://www.codesky.net/article/doc/201004/2010041706540.htm
找下加密解密的方法 .
你得仔细看看MSDN才行啊,因为这个方法不是用来加密的?
只是一种简单的转换浏览器
比如“空格”在IE里面会自动转换成20%
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO; /// <summary>
/// 加密字符
/// </summary>
/// <param name=pToEncrypt>加密字符串</param>
/// <param name=skey>加密密钥</param>
/// <returns>返回加密</returns>
public class DescMD5
{
public static string skey = "abcdefgh"; public string Skey
{
get { return skey; }
set { skey = value; }
}
/// <summary>
/// 加密函数
/// </summary>
/// <param name="pToEncrypt"></param>
/// <returns></returns>
public string EnCrypt(string pToEncrypt)
{
//访问数据加密标准(DES)算法的加密服务提供程序 (CSP) 版本的包装对象
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.Key = System.Text.ASCIIEncoding.ASCII.GetBytes(skey);//建立加密对象的密钥和偏移量
des.IV = ASCIIEncoding.ASCII.GetBytes(skey); //原文使用ASCIIEncoding.ASCII方法的GetBytes方法
byte[] inputbyteArray = Encoding.Default.GetBytes(pToEncrypt);//把字符串放到byte数组中
MemoryStream ms = new MemoryStream();//创建其支持存储区为内存的流
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputbyteArray, 0, inputbyteArray.Length);
cs.FlushFinalBlock();//上面已经完成了把加密后的结果放到内存中去
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString(); }
/// <summary>
/// 解密ESC函数
/// </summary>
/// <param name="pToDecrypt">被解密的字符串</param>
/// <param name="sKey">密钥(只支持8个字节的密钥,同前面的加密密钥相同)</param>
/// <returns>返回被解密的字符串</returns> public string DeCrypt(string pToDecrypt)
{ DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte []inputbyteArray=new byte[pToDecrypt.Length/2];
for (int i = 0; i < pToDecrypt.Length / 2; i++)
{
int x = Convert.ToInt32(pToDecrypt.Substring(i * 2, 2), 16); inputbyteArray[i] = (byte)x;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(skey);
des.IV = ASCIIEncoding.ASCII.GetBytes(skey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputbyteArray, 0, inputbyteArray.Length);
cs.FlushFinalBlock();
return System.Text.Encoding.Default.GetString(ms.ToArray()); } public DescMD5() { } }