zoukankan      html  css  js  c++  java
  • MD5算法

    /*
     * MD5 算法
     */
    public class MD5
    {
        
        // 全局数组
        private final static String[] strDigits = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
        
        public MD5()
        {
        }
        
        // 返回形式为数字跟字符串
        private static String byteToArrayString(byte bByte)
        {
            int iRet = bByte;
            // System.out.println("iRet="+iRet);
            if (iRet < 0)
            {
                iRet += 256;
            }
            int iD1 = iRet / 16;
            int iD2 = iRet % 16;
            return strDigits[iD1] + strDigits[iD2];
        }
        
        // 返回形式只为数字
        @SuppressWarnings("unused")
        private static String byteToNum(byte bByte)
        {
            int iRet = bByte;
            if (iRet < 0)
            {
                iRet += 256;
            }
            return String.valueOf(iRet);
        }
        
        // 转换字节数组为16进制字串
        private static String byteToString(byte[] bByte)
        {
            StringBuffer sBuffer = new StringBuffer();
            for (int i = 0; i < bByte.length; i++)
            {
                sBuffer.append(byteToArrayString(bByte[i]));
            }
            return sBuffer.toString();
        }
        
        public static String GetMD5Code(String strObj)
        {
            String resultString = null;
            try
            {
                resultString = new String(strObj);
                MessageDigest md = MessageDigest.getInstance("MD5");
                // md.digest() 该函数返回值为存放哈希值结果的byte数组
                resultString = byteToString(md.digest(strObj.getBytes()));
            }
            catch (NoSuchAlgorithmException ex)
            {
                ex.printStackTrace();
            }
            return resultString;
        }
    }
  • 相关阅读:
    iOS8之后,UITableViewRowAction实现滑动多个按钮
    关于UINavigationController的一些技巧
    NSRegularExpression 使用
    UIWindow
    SVN:The working copy is locked due to a previous error (二)
    iOS监听电话来电、挂断、拨号等
    UIDeviceOrientation 和 UIInterfaceOrientation
    java_day03
    java_day 02
    java_day_02
  • 原文地址:https://www.cnblogs.com/xujianbo/p/5099119.html
Copyright © 2011-2022 走看看