| 提交 | 用户 | age | ||
| 5c5945 | 1 | package com.hx.util; |
| E | 2 | |
| 3 | import java.security.MessageDigest; | |
| 4 | ||
| 5 | public class MD5 { | |
| 6 | private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5", | |
| 7 | "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" }; | |
| 8 | ||
| 9 | public static String byteArrayToHexString(byte[] b) { | |
| 10 | StringBuffer resultSb = new StringBuffer(); | |
| 11 | for (int i = 0; i < b.length; i++) { | |
| 12 | resultSb.append(byteToHexString(b[i])); | |
| 13 | } | |
| 14 | return resultSb.toString(); | |
| 15 | } | |
| 16 | ||
| 17 | private static String byteToHexString(byte b) { | |
| 18 | int n = b; | |
| 19 | if (n < 0) | |
| 20 | n = 256 + n; | |
| 21 | int d1 = n / 16; | |
| 22 | int d2 = n % 16; | |
| 23 | return hexDigits[d1] + hexDigits[d2]; | |
| 24 | } | |
| 25 | ||
| 26 | public static String MD5Encode(String origin) { | |
| 27 | String resultString = null; | |
| 28 | ||
| 29 | try { | |
| 30 | resultString = new String(origin); | |
| 31 | MessageDigest md = MessageDigest.getInstance("MD5"); | |
| 32 | resultString = byteArrayToHexString(md.digest(resultString | |
| 33 | .getBytes())); | |
| 34 | } catch (Exception ex) { | |
| 35 | ||
| 36 | } | |
| 37 | return resultString; | |
| 38 | } | |
| 39 | ||
| 40 | /**密码加密 **/ | |
| 41 | public static String encryption(String str){ | |
| 42 | try{ | |
| 43 | MessageDigest md5 = MessageDigest.getInstance("MD5"); | |
| 44 | md5.update(str.getBytes()); | |
| 45 | byte b[] = md5.digest(); | |
| 46 | int i ; | |
| 47 | StringBuffer buf = new StringBuffer(""); | |
| 48 | for(int j = 0;j<b.length;j++){ | |
| 49 | i = b[j]; | |
| 50 | if(i<0) | |
| 51 | i+=256; | |
| 52 | if(i<116) | |
| 53 | buf.append("0"); | |
| 54 | buf.append(Integer.toHexString(i)); | |
| 55 | } | |
| 56 | str = buf.toString().substring(8, 24); //十六位 | |
| 57 | }catch (Exception e) { | |
| 58 | e.printStackTrace(); | |
| 59 | throw new RuntimeException("加密程序错误！"); | |
| 60 | } | |
| 61 | return str; | |
| 62 | } | |
| 63 | ||
| 64 | } | |
