C# js asp.net 字符串MD5加密GetMD5Hash

杨中科老师 C#

        /// <summary>
        /// 把字符转换成MD5
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public static string GetMD5Hash(String str)
        {
                   //把字符串转换成字节数组
                   byte[] buffer = Encoding.Default.GetBytes(str);

                  MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
                   //md5加密
                   byte[] cryptBuffer = md5.ComputeHash(buffer);
                   string s = "";
                   //把每一个字节 0-255，转换成两位16进制数
                   for (int i = ; i < cryptBuffer.Length; i++)
                   {
                           //大X转黄的是大写字母，小X转换的是小写字母
                           s += cryptBuffer[i].ToString("x2");
                   }
              return s;
        } 

赵小虎老师 C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace _02调用类库实现MD5值的计算
{
    class Program
    {
        static void Main(string[] args)
        {
            #region 计算字符串的MD5值
            //while (true)
            //{
            //    Console.WriteLine("请输入一个字符串");
            //    string msg = Console.ReadLine();
            //    string md5String = GetMD5FromString(msg);
            //    Console.WriteLine(md5String);
            //}
            #endregion

            #region 计算文件的Md5
            string path = @"d:\spring.xls";
            Console.WriteLine(GetMD5FromFile(path));
            Console.ReadLine();
            #endregion
        }

        /// <summary>
        /// 计算字符串的MD5值
        /// </summary>
        /// <param name="msg">要计算的字符串</param>
        /// <returns></returns>
        private static string GetMD5FromString(string msg)
        {

            //1.创建一个用来计算MD5值的类的对象
            using (MD5 md5 = MD5.Create())
            {

                //把字符串转换为byte[]
                //注意：如果字符串中包含汉字，则这里会把汉字使用utf-8编码转换为byte[]，当其他地方
                //计算MD5值的时候，如果对汉字使用了不同的编码，则同样的汉字生成的byte[]是不一样的，所以计算出的MD5值也就不一样了。
                byte[] msgBuffer = Encoding.Default.GetBytes(msg);

                //2.计算给定字符串的MD5值
                //返回值就是就算后的MD5值,如何把一个长度为16的byte[]数组转换为一个长度为32的字符串：就是把每个byte转成16进制同时保留2位即可。
                byte[] md5Buffer = md5.ComputeHash(msgBuffer);
                md5.Clear();//释放资源

                StringBuilder sbMd5 = new StringBuilder();
                for (int i = ; i < md5Buffer.Length; i++)
                {
                    sbMd5.Append(md5Buffer[i].ToString("x2"));
                }
                return sbMd5.ToString();

            }

        }

        private static string GetMD5FromFile(string path)
        {
            using (MD5 md5 = MD5.Create())
            {

                using (FileStream fsRead = File.OpenRead(path))
                {
                    byte[] bytes = md5.ComputeHash(fsRead);
                    md5.Clear();
                    StringBuilder sbMd5 = new StringBuilder();
                    for (int i = ; i < bytes.Length; i++)
                    {
                        sbMd5.Append(bytes[i].ToString("X2"));
                    }
                    return sbMd5.ToString();
                }

            }
        }
    }
}

JS  MD5加密

对  oldPwd 加密

hex_md5(oldPwd).toUpperCase()

JS文件：

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 *
 *
 * 使用方法 hex_md5("1").toUpperCase()
 */

/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
var hexcase = ;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz   = ;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test()
{
  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
  /* append padding */
  x[len >> ] |= 0x80 << ((len) % );
  x[(((len + ) >>> ) << ) + ] = len;

  var a =  ;
  var b = -;
  var c = -;
  var d =  ;

  for(var i = ; i < x.length; i += )
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ ],  , -);
    d = md5_ff(d, a, b, c, x[i+ ], , -);
    c = md5_ff(c, d, a, b, x[i+ ], ,  );
    b = md5_ff(b, c, d, a, x[i+ ], , -);
    a = md5_ff(a, b, c, d, x[i+ ],  , -);
    d = md5_ff(d, a, b, c, x[i+ ], ,  );
    c = md5_ff(c, d, a, b, x[i+ ], , -);
    b = md5_ff(b, c, d, a, x[i+ ], , -);
    a = md5_ff(a, b, c, d, x[i+ ],  ,  );
    d = md5_ff(d, a, b, c, x[i+ ], , -);
    c = md5_ff(c, d, a, b, x[i+], , -);
    b = md5_ff(b, c, d, a, x[i+], , -);
    a = md5_ff(a, b, c, d, x[i+],  ,  );
    d = md5_ff(d, a, b, c, x[i+], , -);
    c = md5_ff(c, d, a, b, x[i+], , -);
    b = md5_ff(b, c, d, a, x[i+], ,  );

    a = md5_gg(a, b, c, d, x[i+ ],  , -);
    d = md5_gg(d, a, b, c, x[i+ ],  , -);
    c = md5_gg(c, d, a, b, x[i+], ,  );
    b = md5_gg(b, c, d, a, x[i+ ], , -);
    a = md5_gg(a, b, c, d, x[i+ ],  , -);
    d = md5_gg(d, a, b, c, x[i+],  ,  );
    c = md5_gg(c, d, a, b, x[i+], , -);
    b = md5_gg(b, c, d, a, x[i+ ], , -);
    a = md5_gg(a, b, c, d, x[i+ ],  ,  );
    d = md5_gg(d, a, b, c, x[i+],  , -);
    c = md5_gg(c, d, a, b, x[i+ ], , -);
    b = md5_gg(b, c, d, a, x[i+ ], ,  );
    a = md5_gg(a, b, c, d, x[i+],  , -);
    d = md5_gg(d, a, b, c, x[i+ ],  , -);
    c = md5_gg(c, d, a, b, x[i+ ], ,  );
    b = md5_gg(b, c, d, a, x[i+], , -);

    a = md5_hh(a, b, c, d, x[i+ ],  , -);
    d = md5_hh(d, a, b, c, x[i+ ], , -);
    c = md5_hh(c, d, a, b, x[i+], ,  );
    b = md5_hh(b, c, d, a, x[i+], , -);
    a = md5_hh(a, b, c, d, x[i+ ],  , -);
    d = md5_hh(d, a, b, c, x[i+ ], ,  );
    c = md5_hh(c, d, a, b, x[i+ ], , -);
    b = md5_hh(b, c, d, a, x[i+], , -);
    a = md5_hh(a, b, c, d, x[i+],  ,  );
    d = md5_hh(d, a, b, c, x[i+ ], , -);
    c = md5_hh(c, d, a, b, x[i+ ], , -);
    b = md5_hh(b, c, d, a, x[i+ ], ,  );
    a = md5_hh(a, b, c, d, x[i+ ],  , -);
    d = md5_hh(d, a, b, c, x[i+], , -);
    c = md5_hh(c, d, a, b, x[i+], ,  );
    b = md5_hh(b, c, d, a, x[i+ ], , -);

    a = md5_ii(a, b, c, d, x[i+ ],  , -);
    d = md5_ii(d, a, b, c, x[i+ ], ,  );
    c = md5_ii(c, d, a, b, x[i+], , -);
    b = md5_ii(b, c, d, a, x[i+ ], , -);
    a = md5_ii(a, b, c, d, x[i+],  ,  );
    d = md5_ii(d, a, b, c, x[i+ ], , -);
    c = md5_ii(c, d, a, b, x[i+], , -);
    b = md5_ii(b, c, d, a, x[i+ ], , -);
    a = md5_ii(a, b, c, d, x[i+ ],  ,  );
    d = md5_ii(d, a, b, c, x[i+], , -);
    c = md5_ii(c, d, a, b, x[i+ ], , -);
    b = md5_ii(b, c, d, a, x[i+], ,  );
    a = md5_ii(a, b, c, d, x[i+ ],  , -);
    d = md5_ii(d, a, b, c, x[i+], , -);
    c = md5_ii(c, d, a, b, x[i+ ], ,  );
    b = md5_ii(b, c, d, a, x[i+ ], , -);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Calculate the HMAC-MD5, of a key and some data
 */
function core_hmac_md5(key, data)
{
  var bkey = str2binl(key);
  if(bkey.length > ) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(), opad = Array();
  for(var i = ; i < ; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_md5(ipad.concat(str2binl(data)),  + data.length * chrsz);
  return core_md5(opad.concat(hash),  + );
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> ) + (y >> ) + (lsw >> );
  return (msw << ) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> ( - cnt));
}

/*
 * Convert a string to an array of little-endian words
 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
 */
function str2binl(str)
{
  var bin = Array();
  var mask = ( << chrsz) - ;
  for(var i = ; i < str.length * chrsz; i += chrsz)
    bin[i>>] |= (str.charCodeAt(i / chrsz) & mask) << (i%);
  return bin;
}

/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin)
{
  var str = "";
  var mask = ( << chrsz) - ;
  for(var i = ; i < bin.length * ; i += chrsz)
    str += String.fromCharCode((bin[i>>] >>> (i % )) & mask);
  return str;
}

/*
 * Convert an array of little-endian words to a hex string.
 */
function binl2hex(binarray)
{
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for(var i = ; i < binarray.length * ; i++)
  {
    str += hex_tab.charAt((binarray[i>>] >> ((i%)*+)) & 0xF) +
           hex_tab.charAt((binarray[i>>] >> ((i%)*  )) & 0xF);
  }
  return str;
}

/*
 * Convert an array of little-endian words to a base-64 string
 */
function binl2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for(var i = ; i < binarray.length * ; i += )
  {
    var triplet = (((binarray[i   >> ] >>  * ( i   %)) & 0xFF) << )
                | (((binarray[i+ >> ] >>  * ((i+)%)) & 0xFF) <<  )
                |  ((binarray[i+ >> ] >>  * ((i+)%)) & 0xFF);
    for(var j = ; j < ; j++)
    {
      if(i *  + j *  > binarray.length * ) str += b64pad;
      else str += tab.charAt((triplet >> *(-j)) & 0x3F);
    }
  }
  return str;
}