最近學習加密算法的知識，利用MD5 加密，百度一下網上資料很多，不是很詳細，這里就整理下如何實現用MD5加密和 哈希散列帶秘鑰加密算法，大家可以看下。
實現代碼：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
package com.ompa.common.utils;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import javax.crypto.Mac;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec;/*** 采用MD5加密 * * @author zhangcd* @date 2016-4-29*/public class EncryptUtil { private static final String MAC_NAME = "HmacSHA1"; private static final String ENCODING = "UTF-8"; private static final String key = "iloveyou";/*** * MD5加碼 生成32位md5碼 */public static String string2MD5(String inStr){ MessageDigest md5 = null; try{ md5 = MessageDigest.getInstance("MD5"); }catch (Exception e){ System.out.println(e.toString()); e.printStackTrace(); return ""; } char[] charArray = inStr.toCharArray(); byte[] byteArray = new byte[charArray.length]; for (int i = 0; i < charArray.length; i++) byteArray[i] = (byte) charArray[i]; byte[] md5Bytes = md5.digest(byteArray); StringBuffer hexValue = new StringBuffer(); for (int i = 0; i < md5Bytes.length; i++){ int val = ((int) md5Bytes[i]) & 0xff; if (val < 16) hexValue.append("0"); hexValue.append(Integer.toHexString(val)); } return hexValue.toString(); } /*** * MD5加密 生成32位md5碼 */public static String stringMD5(String inStr){ return string2MD5(string2MD5(inStr)); }/** * 加密解密算法*/public static String convertMD5(String inStr){ char[] a = inStr.toCharArray(); for (int i = 0; i < a.length; i++){ a[i] = (char) (a[i] ^ 't'); } String s = new String(a); return s; } /** * HMAC-SHA1 * @param encryptText * @param encryptKey * @return * @throws Exception */public static String HmacSHA1Encrypt(String encryptText, String encryptKey) throws Exception { byte[] data=encryptKey.getBytes(ENCODING); SecretKey secretKey = new SecretKeySpec(data, MAC_NAME); Mac mac = Mac.getInstance(MAC_NAME); mac.init(secretKey); byte[] text = encryptText.getBytes(ENCODING); byte[] str = mac.doFinal(text);// Create Hex StringStringBuffer hexString = new StringBuffer();// 字節數組轉換為 十六進制 數for (int i = 0; i < str.length; i++) {String shaHex = Integer.toHexString(str[i] & 0xFF);if (shaHex.length() < 2) {hexString.append(0);}hexString.append(shaHex);}return hexString.toString();} public static String convertSHA1(String instr){try {return HmacSHA1Encrypt(instr,key);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();return "";}}// 測試主函數 public static void main(String args[]) throws Exception { //哈希散列帶秘鑰加密String tt = convertSHA1("123456");System.out.println(tt);//MD5加密String s = new String("123456"); System.out.println("原始：" + s); System.out.println("MD5后：" + string2MD5(s)); System.out.println("MD5加密后：" + stringMD5(s));} } |
感謝閱讀，希望能幫助到大家，謝謝大家對本站的支持！
原文鏈接：http://www.cnblogs.com/lingbing/p/6085747.html
