AES encryption using CryptoSwift and CryptoJS - swift

Question

I was to trying encrypt a text using CryptoSwift for ios application, and CryptoJS for web application, which has to be decrypted in Java platform. I could able to encrypt successfully in javascript by using the following code.
var message = "Hello"
var password = "samplepasswordky"
function encrypt(message, password) {
var salt = CryptoJS.enc.Hex.parse("00000000000000000000000000000000");
var key = CryptoJS.PBKDF2(pass, salt, {
keySize: keySize/32,
iterations: iterations
});
var iv = CryptoJS.enc.Hex.parse("00000000000000000000000000000000");
var encrypted = CryptoJS.AES.encrypt(msg, key, {
iv: iv
});
var encryptedMessage = encrypted.ciphertext.toString(CryptoJS.enc.Base64);
return encryptedMessage;
}
For the same in CryptoSwift I am doing the following, but I could not decrypt the text in Java.
let salt: [UInt8] = Array("0000000000000000".utf8)
let password: [UInt8] = Array("samplepasswordky".utf8)
let iv: [UInt8] = Array("0000000000000000".utf8)
let derivedKey = try! PKCS5.PBKDF2(password: password, salt: salt , iterations: 100, keyLength: 16, variant: .sha1).calculate()
let encrypted = try! AES(key: derivedKey, blockMode: CBC(iv: iv), padding: .pkcs5).encrypt(input)
print(encrypted.toHexString())
Kindly help me to make this work.

Answer 1

This line:
var salt = CryptoJS.enc.Hex.parse("00000000000000000000000000000000");
Is not the same as this line:
let salt: [UInt8] = Array("0000000000000000".utf8)
The utf8 encoding of "0000000000000000" is, in hex, 30303030303030303030303030303030 (0x30 is the UTF-8 encoding of the character "0").
What you meant to use here is Array(repeating: UInt8(0), count: 16).
You're also outputting a Base64 string in JavaScript, and a hex string in Swift, which are not the same things.
Unrelated side-note:
This implementation is working pretty hard to get little security. If your password is static, you could do much better by using a random key (i.e. 32 completely random bytes 0-255, not a string of characters). PKBDF2 isn't really buying you much here, excepting slowing down the system (not slowing down the attacker; just your app). Adding a random IV would significantly improve this system as well with little cost.