8N5Ryf3B

1public class AESUtil
2{
3    private static final Logger LOGGER = LoggerFactory.getLogger(AESUtil.class);
4
5    /**将二进制转换成16进制
6     * @param buf
7     * @return
8     */
9    public static String parseByte2HexStr(byte buf[]) {
10        StringBuffer sb = new StringBuffer();
11        for (int i = 0; i < buf.length; i++) {
12            String hex = Integer.toHexString(buf[i] & 0xFF);
13            if (hex.length() == 1) {
14                hex = '0' + hex;
15            }
16            sb.append(hex.toUpperCase());
17        }
18        return sb.toString();
19    }
20
21    public static SecretKeySpec getKey(String myKey){
22
23
24        MessageDigest sha = null;
25        try {
26            byte[] key = myKey.getBytes("UTF-8");
27            sha = MessageDigest.getInstance("SHA-1");
28            key = sha.digest(key);
29            String s = parseByte2HexStr(key);
30            String substring = s.substring(0, 16);
31            String s1 = substring.toLowerCase();
32            SecretKeySpec secretKey = new SecretKeySpec(s1.getBytes(),"AES");
33            return secretKey;
34
35        } catch (NoSuchAlgorithmException e) {
36            LOGGER.error(e.getMessage(),e);
37        } catch (UnsupportedEncodingException e) {
38            LOGGER.error(e.getMessage(),e);
39        }
40        return null;
41    }
42
43    /**
44     * 加密
45     * @param strToEncrypt
46     * @return
47     */
48    public static String encrypt(String strToEncrypt,String password)
49    {
50        try
51        {
52            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
53
54            cipher.init(Cipher.ENCRYPT_MODE, getKey(password));
55
56
57            return Base64.encodeBase64String(cipher.doFinal(strToEncrypt.getBytes("UTF-8")));
58
59        }
60        catch (Exception e)
61        {
62
63            LOGGER.error(e.getMessage(),e);
64        }
65        return null;
66    }
67
68    /**
69     * 解密
70     * @param strToDecrypt
71     * @return
72     */
73    public static String decrypt(String strToDecrypt,String password)
74    {
75        try
76        {
77            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
78
79            cipher.init(Cipher.DECRYPT_MODE,getKey(password));
80            return new String(cipher.doFinal(Base64.decodeBase64(strToDecrypt)));
81
82        }
83        catch (Exception e)
84        {
85
86            LOGGER.error(e.getMessage(),e);
87        }
88        return null;
89    }
90}