1 String keyStr = "SPARTAGO";
2 String data = "这也是斯巴达";
3
4 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
5 DESKeySpec keySpec = new DESKeySpec(keyStr.getBytes());
6 Key key = keyFactory.generateSecret(keySpec);
7
8 AlgorithmParameterSpec iv = new IvParameterSpec("GOSPARTA".getBytes());
9
10 // 此处用“DES/CBC/PKCS5Padding”;“DES/EBC/PKCS5Padding”与“DES”是相同的statement,都无法使用向量
11 Cipher enCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
12 Cipher deCipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); // 获取实例时参数需为此形式
13
14 enCipher.init(Cipher.ENCRYPT_MODE, key, iv);
15 deCipher.init(Cipher.DECRYPT_MODE, key, iv);
16
17 BASE64Encoder encoder = new BASE64Encoder();
18 BASE64Decoder decoder = new BASE64Decoder();
19
20 String result = encoder.encode(enCipher.doFinal(data.getBytes()));
21
22 System.out.println("Before:"+result);
23
24 System.out.println("After:"+new String(deCipher.doFinal(decoder.decodeBuffer(result))));
25
