Memindahkan fungsi penyulitan AES ke node.js

func (s *smartviewsession) aesencrypt(plaindata []byte) ([]byte, error) {
    //logrus.debugf("aesencrypt(%#v) : '%s'", plaindata, string(plaindata))
    //logrus.debugf("session id:  %d", s.sessionid)
    //logrus.debugf("session key: '%x'\n  %v", string(s.sessionkey), s.sessionkey)

    // create cipher block
    block, err := aes.newcipher(s.sessionkey)
    if err != nil {
        return nil, err
    }

    bs := block.blocksize()
    //logrus.debugf("block size: %d", bs)

    // add padding
    padding := bs - len(plaindata)%bs
    padtext := bytes.repeat([]byte{byte(padding)}, padding)
    //logrus.debugf("padding: %d byte(s)", padding)
    plaindata = append(plaindata, padtext...)

    // encrypt
    ciphertext := make([]byte, len(plaindata))
    for cipherrange := ciphertext; len(plaindata) > 0; {
        block.encrypt(cipherrange, plaindata[:bs])
        plaindata = plaindata[bs:]
        cipherrange = cipherrange[bs:]
    }

    //logrus.debugf("ciphertext: %#v", ciphertext)
    return ciphertext, nil
}

const SESSION_KEY = "59e8ca4b09f2a19ab5421cf55d604c7c";

var aesEncrypt = ((val, algo = "aes-256-cbc") => {
    let cipher = crypto.createCipheriv(algo, SESSION_KEY, IV);
    let encrypted = cipher.update(val, 'utf8', 'base64');
    encrypted += cipher.final('base64');
    return encrypted;
});

var crypto = require('crypto');

const SESSION_KEY = Buffer.from("59e8ca4b09f2a19ab5421cf55d604c7c", "hex");

var aesEncrypt = ((val, algo = "aes-128-ecb") => {
    let cipher = crypto.createCipheriv(algo, SESSION_KEY, null);
    return Buffer.concat([cipher.update(val, 'utf8'), cipher.final()]);
});

var ciphertext = aesEncrypt("The quick brown fox jumps over the lazy dog");
console.log(ciphertext.toString('base64')); // T/uQforseVFkY93mqwpwCGVVnEFDTT5Gle8a8XUxCfOXCfYUo3uCJ/nwzCIJ9xqf