通用简单的MD5程序

import java.security.MessageDigest; /** * FileName:MD5.CLASS * Author:Gboshi * Create File Time:2006-07 * */public class Md5 { /*** String Array?* @pram MyMiss* */  private final static String[] MyMiss = {       "0", "1", "2", "3", "4", "5", "6", "7",       "8", "9", "a", "b", "c", "d", "e", "f"};   public static String byteArrayToHexString(byte[] b)   {     StringBuffer sb = new StringBuffer();     for (int i = 0; i < b.length; i++)     {     sb.append(byteToHexString(b[i]));     }     return sb.toString();   }   private static String byteToHexString(byte b)   {     int n = b;     if (n < 0)       n = 256 + n;     int d1 = n / 16;     int d2 = n % 16;     return MyMiss[d1] + MyMiss[d2];   }   public static String md5(String origin)  {     String rs = null;     try {       rs=new String(origin);       MessageDigest md = MessageDigest.getInstance("MD5");       rs=byteArrayToHexString(md.digest(rs.getBytes()));     }     catch (Exception ex) {     ex.printStackTrace();    }     return rs;   }  //Test  public static void main(String agrs[]){  System.out.println(md5("admin"));  System.out.println(md5("ADMIN"));  }}