md5util.java

公司自己开发的工作流引擎

package cn.com.iaspec.workflow.util;

import java.security.*;

/**
 *
 * <p>Title:MD5加密算法 </p>
 * <p>Description: 用于口令加密</p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: IASPEC Technologies</p>
 * @author xiesonglin
 * @version 1.0
 */

public class MD5Util{
  public MD5Util(){
  }

  private final static String[] hexDigits={
      "0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"};

  /**
   * 转换字节数组为16进制字串
   * @param b 字节数组
   * @return 16进制字串
   */
  private static String byteArrayToHexString(byte[] b){
    StringBuffer resultSb=new StringBuffer();
    for(int i=0;i<b.length;i++){
      resultSb.append(byteToHexString(b[i]));
    }
    return resultSb.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 hexDigits[d1]+hexDigits[d2];
  }

  public static String MD5Encode(String origin){
    String resultString=null;
    try{
      resultString=new String(origin);
      MessageDigest md=MessageDigest.getInstance("SHA-1");
      resultString=byteArrayToHexString(md.digest(resultString.getBytes()));
     // System.out.println("resultString length is:"+resultString.length());
    }
    catch(Exception ex){
    }
    return resultString;
  }

  public static void main(String[] args){
    System.err.println("chengq is:"+MD5Encode("chengq123"));
    System.err.println("wangsy is:"+MD5Encode("wangsy123"));
    System.err.println("zhangmx is:"+MD5Encode("zhangmx123"));
    System.err.println("zhangnx is:"+MD5Encode("zhangnx123"));
    System.err.println("lium is:"+MD5Encode("lium123"));
    System.err.println("chenhl is:"+MD5Encode("chenhl123"));
    System.err.println("zhuangzh is:"+MD5Encode("zhuangzh123"));
    System.err.println("zhoulp is:"+MD5Encode("zhoulp123"));
    System.err.println("chaixr is:"+MD5Encode("chaixr123"));
    System.err.println("zoux is:"+MD5Encode("zoux123"));
    System.err.println("zhuy is:"+MD5Encode("zhuy123"));
    System.err.println("xies is:"+MD5Encode("xies123"));
    System.err.println("jianghp is:"+MD5Encode("jianghp123"));
    System.err.println("zhangfl is:"+MD5Encode("zhangfl123"));
    System.err.println("chenym is:"+MD5Encode("chenym123"));
    System.err.println("zhangd is:"+MD5Encode("zhangd123"));
    System.err.println("penghg is:"+MD5Encode("penghg123"));
    System.err.println("xush is:"+MD5Encode("xush123"));
    System.err.println("xiers is:"+MD5Encode("xiers123"));
    System.err.println("yangcb is:"+MD5Encode("yangcb123"));
    System.err.println("zhangyj is:"+MD5Encode("zhangyj123"));
    System.err.println("liaolp is:"+MD5Encode("liaolp123"));
    System.err.println("luoxq is:"+MD5Encode("luoxq123"));
    System.err.println("linhc is:"+MD5Encode("linhc123"));
    System.err.println("zhongwq is:"+MD5Encode("zhongwq123"));

  }
}