ASP.NET 中实现 MD5_HMAC(C#)

1@ Page Language="C#" Description="MD5_HMAC ASP.NET" 

1@ Import Namespace="System"

1@ Import Namespace="System.IO"

1@ Import Namespace="System.Security"

1@ Import Namespace="System.Security.Cryptography"

1@ Import Namespace="System.Text"

 1<script language="c#" runat="server">   
 2//by skyonline   
 3//Date: 2003/6/3   
 4//MD5 Function   
 5string fun_MD5(string str)   
 6{   
 7byte[] b = System.Text.Encoding.GetEncoding(1252).GetBytes(str);   
 8b=new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(b);   
 9string ret="";   
10for(int i=0;i<b.Length;i++)   
11ret+=b[i].ToString("x").PadLeft(2,'0');   
12return ret;   
13} 
14
15Byte[] hexstr2array(string HexStr)   
16{   
17string HEX = "0123456789ABCDEF";   
18string str = HexStr.ToUpper();   
19int len = str.Length;   
20byte[] RetByte = new byte[len/2];   
21for(int i=0; i<len/2; i++)   
22{   
23int NumHigh = HEX.IndexOf(str[i*2]);   
24int NumLow = HEX.IndexOf(str[i*2+1]);   
25RetByte[i] = Convert.ToByte(NumHigh*16+NumLow);   
26}   
27return RetByte;   
28}   
29</script>

 1   
 2//these for MD5_HMAC   
 3string ipad="";   
 4string opad=""; 
 5
 6{   
 7for(int i=0; i<64; i++)   
 8{   
 9ipad += "6";   
10opad += "\\\";   
11}   
12}   
13  
14string Password= "Jefe";   
15int KLen = Password.Length;   
16string iResult = "";   
17{   
18for(int i = 0; i < 64; i++)   
19{   
20if(i < KLen)   
21iResult += Convert.ToChar(ipad[i] ^ Password[i]);   
22else   
23iResult += Convert.ToChar(ipad[i]);   
24}   
25}   
26iResult += "what do ya want for nothing?";   
27iResult = fun_MD5(iResult);   
28  
29byte[] Test = hexstr2array(iResult);   
30iResult = "";   
31char[] b = System.Text.Encoding.GetEncoding(1252).GetChars(Test); 
32
33for(int i=0;i