encode_md5.java

Email营销是在用户事先许可的前提下

package com.qq.content;

import java.text.SimpleDateFormat;
import java.util.Date;

import java.security.*;

public class Encode_md5{

	public static String curTime;



    public static String getTime()
    {
      Date timeer = new Date(); // 取当前的时间
      SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss"); // 设置显示的格式
      String msg = df.format(timeer); // msg中存放格式化后的时间字串
      System.out.println(msg);
      return msg;
    }

	public static String encode(String mobile)
	{
		String tm = getTime();
		curTime = tm;
		return getDigest(mobile+tm, "abcdefghijklmkopqrstuvwxyz");
	
	}
	
	public static String encode(String mobile, String tm)
	{

		return getDigest(mobile+tm, "abcdefghijklmkopqrstuvwxyz");
	
	}

	public static String getDigest(String str, String key) {
		
		String outline=null;
		byte[] salt = new byte[50];
		int i;
		
		if(str==null)
			return null;
		
		for (i = 0; i < salt.length; ++i) {
			salt[i] = 3;
		}
		
		byte[] srcBytes = str.getBytes();
		byte[] keyBytes = key.getBytes();
		int bt=(srcBytes.length<keyBytes.length?srcBytes.length:keyBytes.length);

		for (i = 0; i < bt; ++i) {//加密算法，产生密钥
			salt[i] = (byte)(srcBytes[i%bt]^keyBytes[i%bt]);
		}
		
		try {
			MessageDigest digester = java.security.MessageDigest.getInstance("MD5");
			digester.update(salt);
			byte[] digesta = digester.digest();
			outline = byte2hex(digesta);
			System.out.println("OUT:" + outline);
		} catch (NoSuchAlgorithmException ex) {
			ex.printStackTrace();
		}
		return outline;

	}

	public static String byte2hex(byte[] b) //二行制转字符串
	{
		String hs = "";
		String stmp = "";
		for (int n = 0; n < b.length; n++) {
			stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
			if (stmp.length() == 1)
				hs = hs + "0" + stmp;
			else
				hs = hs + stmp;
			
		}
		return hs;
	}
	
	public static void main(String[] args) {
		String mobileNum = "13888889999";
		String time = "20060501000000";		
		String out=Encode_md5.getDigest(mobileNum + time, "abcdefghijklmkopqrstuvwxyz");//加密串
		System.out.println("out put is "+out);

	}	
	
}