1 package unit;
2 import javax.crypto.Cipher;
3 import javax.crypto.spec.IvParameterSpec;
4 import javax.crypto.spec.SecretKeySpec;
5
6 import org.apache.commons.codec.binary.Base64;
7 /**
8 * AES/CBC/PKCS5Padding 对称加密
9 * @author jia
10 *
11 */
12 public class AES_CBC {
13
14 private static final String ALGORITHM = "AES/CBC/PKCS5Padding";
15 /**
16 * 数据加密
17 * @param srcData
18 * @param key
19 * @param iv
20 * @return
21 */
22 public static String encrypt(String srcData,byte[] key,byte[] iv)
23 {
24 SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
25 Cipher cipher;
26 String encodeBase64String = null;
27 try {
28 cipher = Cipher.getInstance(ALGORITHM);
29 cipher.init(Cipher.ENCRYPT_MODE, keySpec, new IvParameterSpec(iv));
30 byte[] encData = cipher.doFinal(srcData.getBytes());
31 encodeBase64String = Base64.encodeBase64String(encData);
32 } catch (Exception e) {
33 e.printStackTrace();
34 }
35 return encodeBase64String;
36 }
37
38 /**
39 * 数据解密
40 * @param encDataStr
41 * @param key
42 * @param iv
43 * @return
44 */
45 public static String decrypt(String encDataStr,byte[] key,byte[] iv)
46 {
47 byte[] encData = Base64.decodeBase64(encDataStr);
48 SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
49 Cipher cipher;
50 byte[] decbbdt = null;
51 try {
52 cipher = Cipher.getInstance(ALGORITHM);
53 cipher.init(Cipher.DECRYPT_MODE, keySpec, new IvParameterSpec(iv));
54 decbbdt = cipher.doFinal(encData);
55 } catch (Exception e) {
56 e.printStackTrace();
57 }
58 return new String(decbbdt);
59 }
60
61 public static void main(String[] args) throws Exception {
62 String str = "fot4Ginq4iey7kLUUmA+dA==";
63 byte[] s = Base64.decodeBase64(str);
64 String s2 = "12345678ilkljklkjv";
65 String iv = "1234567890123456";
66 System.out.println("加密前： "+s2);
67 String encrypt = AES_CBC.encrypt(s2, s, iv.getBytes());
68 System.out.println("加密后： "+new String(encrypt));
69 String decrypt = AES_CBC.decrypt(encrypt, s, iv.getBytes());
70 System.out.println("解密后： "+decrypt);
71 }
72 }
