passwordmd.java

信息加密

package com.bmcc.tool;

import java.security.MessageDigest;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class PasswordMD{

  public PasswordMD(){}

  public final static String MD5(String s){
    char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
    try{
      byte[] strTemp = s.getBytes();
      MessageDigest mdTemp = MessageDigest.getInstance("MD5");
      mdTemp.update(strTemp);
      byte[] md = mdTemp.digest();
      int j = md.length;
      char str[] = new char[j*2];
      int k = 0;
      for(int i = 0;i<j;i++){
        byte byte0 = md[i];
        str[k++] = hexDigits[byte0>>>4&0xf];
        str[k++] = hexDigits[byte0&0xf];
      }
      return new String(str);
    } catch(Exception e){
      return null;
    }
  }

  public static void main(String[] args){
    System.out.println(PasswordMD.MD5("kanzl.123"));
  }
}