C#.NET 字串加解密程式
昨天韓國總部來人對網站進行了Security Review, 看到很多連結字串我們都沒有加密,批評了一下。
要把之前用的字串加解密程式拿出來用用了,順便共享,希望能幫助需要的朋友:
加密演算法使用3DES,key經過MD5雜湊過,強度應該能滿足一般需要了,程式碼很少,很方便:
<!--
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-->using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
namespace NOP.Security
{
public class Encrypt
{
public static string DecryptString(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] inputBuffer = Convert.FromBase64String(strText);
return Encoding.ASCII.GetString(provider.CreateDecryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length));
}
public static string DecryptUTF8String(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] inputBuffer = Convert.FromBase64String(strText);
return Encoding.UTF8.GetString(provider.CreateDecryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length));
}
public static string EncryptString(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] bytes = Encoding.ASCII.GetBytes(strText);
string str = Convert.ToBase64String(provider.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length));
provider = null;
return str;
}
public static string EncryptUTF8String(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] bytes = Encoding.UTF8.GetBytes(strText);
string str = Convert.ToBase64String(provider.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length));
provider = null;
return str;
}
}
Code highlighting produced by Actipro CodeHighlighter (freeware)
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-->using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
namespace NOP.Security
{
public class Encrypt
{
public static string DecryptString(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] inputBuffer = Convert.FromBase64String(strText);
return Encoding.ASCII.GetString(provider.CreateDecryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length));
}
public static string DecryptUTF8String(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] inputBuffer = Convert.FromBase64String(strText);
return Encoding.UTF8.GetString(provider.CreateDecryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length));
}
public static string EncryptString(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] bytes = Encoding.ASCII.GetBytes(strText);
string str = Convert.ToBase64String(provider.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length));
provider = null;
return str;
}
public static string EncryptUTF8String(string strText, string key)
{
byte[] buffer = new MD5CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(key));
TripleDESCryptoServiceProvider provider = new TripleDESCryptoServiceProvider();
provider.Key = buffer;
provider.Mode = CipherMode.ECB;
byte[] bytes = Encoding.UTF8.GetBytes(strText);
string str = Convert.ToBase64String(provider.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length));
provider = null;
return str;
}
}
}
作者:Lance Zhang(Lance Zhang's Tech
Blog)
出處:http://blodfox777.cnblogs.com/
本文版權歸作者和部落格園共有,歡迎轉載,但未經作者同意必須保留此段宣告,且在文章頁面明顯位置給出原文連線,否則保留追究法律責任的權利。
來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/12639172/viewspace-617465/,如需轉載,請註明出處,否則將追究法律責任。
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