GjwFSyXM

1public String decrypt(String encryptedString) throws EncryptionException {
2        if (encryptedString == null || encryptedString.trim().length() <= 0)
3            throw new IllegalArgumentException("encrypted string was null or empty");
4        try {
5            byte[] cleartext = Base64.decodeBase64(encryptedString);
6return decrypt(cleartext);
7        } catch (Exception e) {
8            throw new EncryptionException(e);
9        }
10    }
11
12    public String decrypt(byte[] cleartext) throws EncryptionException {
13        try {
14            SecretKey key = keyFactory.generateSecret(keySpec);
15
16            cipher.init(Cipher.DECRYPT_MODE, key);
17            byte[] ciphertext = cipher.doFinal(cleartext);
18
19            return bytes2String(ciphertext);
20        } catch (Exception e) {
21            throw new EncryptionException(e);
22        }
23    }