public static String decrypt(String str) {
init();
try {
byte[] dec = BASE64DecoderStream.decode(str.getBytes());
byte[] utf8 = dcipher.doFinal(dec);
return new String(utf8, "UTF8");
} catch (IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException e) {
System.out.println("Decrypt exception:" + e.getMessage());
}
return null;
}
public static String encryptString(String message, SecretKey key) throws EncryptionException {
String encryptedMessage = "";
try {
Cipher cipher = Cipher.getInstance(ALGO);
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encryptedBytes = cipher.doFinal(message.getBytes());
encryptedMessage = Base64.encodeBase64String(encryptedBytes);
} catch (IllegalBlockSizeException
| BadPaddingException
| InvalidKeyException
| NoSuchAlgorithmException
| NoSuchPaddingException
| NullPointerException e) {
throw new EncryptionException("Cannot encrypt this message" + '\n' + e.getMessage());
}
return encryptedMessage;
}
