I am trying to create an AES encryption method, but for some reason I keep getting a 'java.security.InvalidKeyException: Key length not 128/192/256 bits'.
Here is the code:
public static SecretKey getSecretKey(char[] password, byte[] salt) throws NoSuchAlgorithmException, InvalidKeySpecException{
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
// NOTE: last argument is the key length, and it is 256
KeySpec spec = new PBEKeySpec(password, salt, 1024, 256);
SecretKey tmp = factory.generateSecret(spec);
SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");
return(secret);
}
public static byte[] encrypt(char[] password, byte[] salt, String text) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidParameterSpecException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException{
SecretKey secret = getSecretKey(password, salt);
Cipher cipher = Cipher.getInstance("AES");
// NOTE: This is where the Exception is being thrown
cipher.init(Cipher.ENCRYPT_MODE, secret);
byte[] ciphertext = cipher.doFinal(text.getBytes("UTF-8"));
return(ciphertext);
}
Can anyone see what I am doing wrong? I am thinking it may have something to do with the SecretKeyFactory algorithm, but that is the only one I can find that is supported on the end system I am developing against. Any help would be appreciated. Thanks.
