加密类代码,CSharp代码库,德仔网

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【CSharp】加密类
作者: / 发布于2011/1/6/ 517
<div>using System;
using System.Configuration;
using System.IO;
using System.Security.Cryptography;
using System.Web;
using System.Web.Security;</div>
<div>namespace PublicLayer
{
public class Encrypt
{
#region Kdc</div>
<div>private static string KEY_64 = "JasmineT";
private static string IV_64 = "JasmineT";</div>
<div>region Encode</div>
<div>/// <summary>
/// Kdc加密
/// </summary>
/// <param name="data">加密前字符</param>
/// <returns>加密后字符</returns>
public static string Encode(string data)
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);</div>
<div>DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);</div>
<div>StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
sw.Flush();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}
#endregion Encode</div>
<div>region Decode</div>
<div>/// <summary>
/// Kdc解密
/// </summary>
/// <param name="data">解密前字符</param>
/// <returns>解密后字符</returns>
public static string Decode(string data)
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);</div>
<div>byte[] byEnc;
try
{
byEnc = Convert.FromBase64String(data);
}
catch
{
return null;
}
<div>DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}
#endregion Decode</div>
<div>endregion Kdc</div>
<div>region Sha1</div>
<div>/// <summary>
/// Sha1加密
/// </summary>
/// <param name="strText">加密前字符</param>
/// <returns>加密后字符</returns>
public static string Sha1( string strText)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(strText.Trim(), "sha1");
}
#endregion Sha1</div>
<div>region Md5</div>
<div>/// <summary>
/// Md5加密
/// </summary>
/// <param name="strText">加密前字符</param>
/// <returns>加密后字符</returns>
public static string Md5(string strText)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(strText.Trim(), "md5");
}
<div>public static string Md5(string strText, bool Is16)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(strText.Trim(), "md5").Substring(8, 16);
}
#endregion Md5
}
}
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