对数据库用户名密码的加解密应用之系列
2010-10-29 13:34
411 查看
public class DESEncrypt
{
public DESEncrypt()
{
}
#region ========加密========
/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, "litianping");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string key)
{
//定义数据加密标准
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(key,"md5").Substring(0,8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
//加密的流:写进
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach(byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}
#endregion
#region ========解密========
/// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text,"litianping");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text,string sKey)
{
//加解密类
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length/2;
byte[] inputByteArray = new byte[len];
int x, i;
for(x=0;x<len;x++)
{
i=Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x]=(byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms=new System.IO.MemoryStream();
CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write);
cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}
#endregion
}
}
{
public DESEncrypt()
{
}
#region ========加密========
/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, "litianping");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string key)
{
//定义数据加密标准
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(key,"md5").Substring(0,8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
//加密的流:写进
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach(byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}
#endregion
#region ========解密========
/// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text,"litianping");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text,string sKey)
{
//加解密类
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length/2;
byte[] inputByteArray = new byte[len];
int x, i;
for(x=0;x<len;x++)
{
i=Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x]=(byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms=new System.IO.MemoryStream();
CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write);
cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}
#endregion
}
}
相关文章推荐
- 登录使用OPENSHIFT搭建的PHP+MYSQL应用,显示【连接数据库失败,数据库用户名或密码错误
- springMVC web项目 数据库用户名密码加密解密
- spring web项目 数据库用户名密码加密解密
- springMVC web项目 数据库用户名密码加密解密
- spring 数据库用户名密码加密解密
- springMVC web项目 数据库用户名密码加密解密
- SAP HANA Studio 连接不上数据库或者是报用户名密码失效
- Qt5.9Creator登录界面函数总结(通过连接远程服务器数据库MySql5.7.17进行登录用户名和密码验证)
- 转-数据库应用基础系列-第1章 数据库基础
- [走火入魔失眠夜]浅谈管理软件信息安全,用户名、密码的加密解密【附C#配套加密解密源码】
- [WCF安全系列]谈谈WCF的客户端认证[用户名/密码认证]
- iOS应用中如何保存用户名和密码?
- ASP.NET Cookies简单应用 记住用户名和密码
- 密码应用技术系列之0:开篇
- MySQL 客户端不输入用户名和密码直接连接数据库的2个方法
- AES-128加密数据库连接的用户名和密码
- 如何查找Oracle数据库service_name、及可访问数据库的用户名密码
- 网页登录时用RSA对用户名和密码进行加解密
- Python用户名密码登录系统(MD5加密并存入文件,三次输入错误将被锁定)及对字符串进行凯撒密码加解密操作
- SQL Server 2005为数据库设置用户名和密码的方法