对主机的mac地址MD5加密

1、Java实现主机mac地址加密，使用MD5加密算法。1、 代码1. LOCALMAC类package com.tydic.encr;import .InetAddress;import .NetworkInterface;import .SocketException;import .UnknownHostException;public class LOCALMAC private String localMac;private static LOCALMAC lm;private LOCALMAC()try InetAddress ia = InetAddress.getLocalHost

2、();this.localMac = Ip2LocalMac(ia); catch (SocketException e) e.printStackTrace(); catch (UnknownHostException e) e.printStackTrace();public static LOCALMAC getInstance()if(lm = null)lm = new LOCALMAC();return lm;private static String Ip2LocalMac(InetAddress ia) throws SocketException /获取网卡，获取地址byte

3、 mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();StringBuffer sb = new StringBuffer();for(int i=0; imac.length; i+) if(i!=0) sb.append(-);/字节转换为整数int temp = maci&0xff;String str = Integer.toHexString(temp);if(str.length()=1) sb.append(0+str);else sb.append(str);return sb.toString().

4、toUpperCase();public String getLocalMac() return localMac;2.Password类package com.tydic.encr;import java.security.MessageDigest;public class Password private final static String hexDigits = 0, 1, 2, 3, 4, 5,6, 7, 8, 9, a, b, c, d, e, f ;/ 十六进制下数字到字符的映射数组/* 把inputString加密 */public static String create

5、Password(String inputString) return encodeByMD5(inputString);/* 对字符串进行MD5编码 */private static String encodeByMD5(String originString) if (originString != null) try / 创建具有指定算法名称的信息摘要MessageDigest md = MessageDigest.getInstance(MD5);/ 使用指定的字节数组对摘要进行最后更新，然后完成摘要计算byte results = md.digest(originString.get

6、Bytes();/ 将得到的字节数组变成字符串返回String resultString = byteArrayToHexString(results);return resultString.toUpperCase(); catch (Exception ex) ex.printStackTrace();return null;/* * 字节数组转为十六进制字符串 * * param b * 字节数组 * return 十六进制字符串 */private static String byteArrayToHexString(byte b) StringBuffer resultSb = ne

7、w StringBuffer();for (int i = 0; i b.length; i+) resultSb.append(byteToHexString(bi);return resultSb.toString();/* * 将一个字节转化成十六进制形式的字符串 */private static String byteToHexString(byte b) int n = b;if (n 0)n = 256 + n;int d1 = n / 16;int d2 = n % 16;return hexDigitsd1 + hexDigitsd2;public static void main(String args) String localmac = LOCALMAC.getInstance().getLocalMac();String password = Password.create