md5.java

来自「sp最新短信API(综合网关)」· Java 代码 · 共 70 行

package com.wayout.wayoutsp.communication;

import java.io.*;
import java.security.*;
import java.security.spec.*;


/**

 * Title: CMPP 数据加密

 * Description:
 *
 *加密

 * Copyright:    Copyright (c) wayout

 * Company:talkeweb

 * @version 1.0


 */


/**
 *  使用说明  1.   AuthenticatorICP  = Md5(Source_Addr+ 36(\0) + shared secret ) ;
 *            2.   AuthenticatorISMG = Md5(Status+AuthenticatorICP+Tls_available+shared secret);
 **/

public class Md5 {
 MessageDigest alg ;


  public Md5() {
   try
   {
     alg = MessageDigest.getInstance("MD5");
   }
   catch(NoSuchAlgorithmException e){
      com.wayout.wayoutsp.publics.PublicConstants.writeLog.info("md5 has error="+e,0);
   }
  }

  // 传入要加密的字符串，此函数反回此串的16个字节的摘要密码字符串
  public String encrypt(String key){

   String m = key ;
   return  computeDigest(m.getBytes()) ;
  }

    public String computeDigest(byte[] b)
   {
      try {
          alg.reset();
          alg.update(b);
          byte[] hash = alg.digest();       //得到摘要
          String d = new String(hash,"ISO-8859-1");
          return  d ;
      }
      catch (Exception ex) {
          com.wayout.wayoutsp.publics.PublicConstants.writeLog.info("computeDigest:"+ex.toString(),0 );
          return null;
      }

   }


}