Htykuut

As stackoverflow I have implemented JAVA AES encryption and Javascript AES decryption but unable to implement JAvascript AES encryption to JAVA AES decryption. Please check the below code for more information.

Java Backend Code Example Code:

 public static String encryptAES(String data, String secretKey) {

        try {

            byte secretKeys = Hashing.sha1().hashString(secretKey, Charsets.UTF_8)

                    .toString().substring(0, 16)

                    .getBytes(Charsets.UTF_8);



            final SecretKey secret = new SecretKeySpec(secretKeys, "AES");



            final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

            cipher.init(Cipher.ENCRYPT_MODE, secret);



            final AlgorithmParameters params = cipher.getParameters();



            final byte iv = params.getParameterSpec(IvParameterSpec.class).getIV();

            final byte cipherText = cipher.doFinal(data.getBytes(Charsets.UTF_8));



            return DatatypeConverter.printHexBinary(iv) + DatatypeConverter.printHexBinary(cipherText);

        } catch (Exception e) {

            throw Throwables.propagate(e);

        }

    }





    public static String decryptAES(String data, String secretKey) {

        try {

            byte secretKeys = Hashing.sha1().hashString(secretKey, Charsets.UTF_8)

                    .toString().substring(0, 16)

                    .getBytes(Charsets.UTF_8);



            // grab first 16 bytes - that's the IV

            String hexedIv = data.substring(0, 32);



            // grab everything else - that's the cipher-text (encrypted message)

            String hexedCipherText = data.substring(32);



            byte iv = DatatypeConverter.parseHexBinary(hexedIv);

            byte cipherText = DatatypeConverter.parseHexBinary(hexedCipherText);



            final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");



            cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(secretKeys, "AES"), new IvParameterSpec(iv));



            return new String(cipher.doFinal(cipherText), Charsets.UTF_8);

        } catch (BadPaddingException e) {

            throw new IllegalArgumentException("Secret key is invalid");

        }catch (Exception e) {

            throw Throwables.propagate(e);

        }

    }

Working Decryption code

var str = 'CB5E759CE5FEAFEFCC9BABBFD84DC80C0291ED4917CF1402FF03B8E12716E44C';



console.log("Result: " + CryptoJS.AES.decrypt({

    ciphertext: CryptoJS.enc.Hex.parse(str.substring(32))

}, CryptoJS.enc.Utf8.parse(CryptoJS.SHA1("test").toString().substring(0,16)),  

{

  iv: CryptoJS.enc.Hex.parse(str.substring(0,32)),

}).toString(CryptoJS.enc.Utf8))

<script src="https://cdn.rawgit.com/CryptoStore/crypto-js/3.1.2/build/rollups/sha1.js"></script>

<script src="https://cdn.rawgit.com/CryptoStore/crypto-js/3.1.2/build/rollups/aes.js"></script>

How to implement Javascript AES encryption to Java AES Decryption code. Please give me inputs how to reslove this issue.