T4YMngFs

1private Cipher getCipher(String encryptionKey, int cipherMode)
2            throws Exception {
3        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding", new BouncyCastleProvider());
4        byte[] keys = Base64.decodeBase64(encryptionKey);
5        SecretKey speckey = new SecretKeySpec(keys, "AES");
6        byte[] ivParam = new byte[cipher.getBlockSize()];
7        System.arraycopy(speckey.getEncoded(), 0, ivParam, 0, ivParam.length);
8        cipher.init(cipherMode, speckey, new IvParameterSpec(ivParam));
9        return cipher;
10    }
11	
12public String encryptWithGivenAESKey(String clearText, String AESKey) throws Exception {
13        Cipher cipher = getCipher(AESKey, Cipher.ENCRYPT_MODE);
14        byte[] encryptedBytes = cipher.doFinal(clearText.getBytes("UTF-8"));
15
16        return Base64.encodeBase64String(encryptedBytes);
17    }
18	
19public String decryptWithGivenAESKey(String cipherTextBase64, String AESKey) throws Exception {
20        Cipher cipher = getCipher(AESKey, Cipher.DECRYPT_MODE);
21        byte[] inputBytes = Base64.decodeBase64(cipherTextBase64.getBytes());
22        byte[] encryptedBytes = cipher.doFinal(inputBytes);
23        return new String(encryptedBytes);
24    }