Bagaimanakah saya boleh menyulitkan kata laluan yang disimpan dalam fail konfigurasi dengan selamat menggunakan Penyulitan Berdasarkan Kata Laluan Java?

import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.InvalidKeySpecException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PBEKeySpec;
import java.util.Base64;

public class PasswordEncryption {

    public static void main(String[] args) throws Exception {
        // Generate a secret key from the password
        char[] password = "mySecurePassword".toCharArray();
        byte[] salt = new String("12345678").getBytes();
        int iterationCount = 40000;
        int keyLength = 128;
        SecretKeySpec key = createSecretKey(password, salt, iterationCount, keyLength);

        // Encrypt a password using the secret key
        String originalPassword = "secretPassword";
        String encryptedPassword = encrypt(originalPassword, key);

        // Decrypt the encrypted password
        String decryptedPassword = decrypt(encryptedPassword, key);
    }

    private static SecretKeySpec createSecretKey(char[] password, byte[] salt, int iterationCount, int keyLength) throws NoSuchAlgorithmException, InvalidKeySpecException {
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA512");
        PBEKeySpec keySpec = new PBEKeySpec(password, salt, iterationCount, keyLength);
        SecretKey keyTmp = keyFactory.generateSecret(keySpec);
        return new SecretKeySpec(keyTmp.getEncoded(), "AES");
    }

    private static String encrypt(String property, SecretKeySpec key) throws GeneralSecurityException, UnsupportedEncodingException {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        AlgorithmParameters parameters = cipher.getParameters();
        IvParameterSpec ivParameterSpec = parameters.getParameterSpec(IvParameterSpec.class);
        byte[] cryptoText = cipher.doFinal(property.getBytes("UTF-8"));
        byte[] iv = ivParameterSpec.getIV();
        return base64Encode(iv) + ":" + base64Encode(cryptoText);
    }

    private static String base64Encode(byte[] bytes) {
        return Base64.getEncoder().encodeToString(bytes);
    }

    private static String decrypt(String string, SecretKeySpec key) throws GeneralSecurityException, IOException {
        String iv = string.split(":")[0];
        String property = string.split(":")[1];
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(base64Decode(iv)));
        return new String(cipher.doFinal(base64Decode(property)), "UTF-8");
    }

    private static byte[] base64Decode(String property) throws IOException {
        return Base64.getDecoder().decode(property);
    }
}