```java
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.security.spec.KeySpec;
import java.util.Base64;

public class AESChallenge {
private static final String AES_ALGORITHM = "AES";
private static final String PBKDF2_ALGORITHM = "PBKDF2WithHmacSHA256";
private static final int ITERATIONS = 10000;
private static final int KEY_SIZE = 256;

private static SecretKey generateKey(String password, byte[] salt) throws Exception {
KeySpec spec = new PBEKeySpec(password.toCharArray(), salt, ITERATIONS, KEY_SIZE);
SecretKeyFactory factory = SecretKeyFactory.getInstance(PBKDF2_ALGORITHM);
SecretKey tmp = factory.generateSecret(spec);
return new SecretKeySpec(tmp.getEncoded(), AES_ALGORITHM);
}

private static String encrypt(String plainText, SecretKey key) throws Exception {
Cipher cipher = Cipher.getInstance(AES_ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encryptedBytes = cipher.doFinal(plainText.getBytes(StandardCharsets.UTF_8));
return Base64.getEncoder().encodeToString(encryptedBytes);
}

public static void main(String[] args) {
String flag = "REDACTED";
String password = "aesiseasy";
byte[] salt = "saltval".getBytes(StandardCharsets.UTF_8);

try {
SecretKey key = generateKey(password, salt);
String encryptedFlag = encrypt(flag, key);
System.out.println("Encrypted Flag: " + encryptedFlag);
} catch (Exception e) {
e.printStackTrace();
}
}
}

```

Thanks to Github copilot, "I" wrote a decryption method.

```java
private static String decrypt(String encryptedText, SecretKey key) throws Exception {
Cipher cipher = Cipher.getInstance(AES_ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] encryptedBytes = Base64.getDecoder().decode(encryptedText);
byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
return new String(decryptedBytes);
}
```


Flag: `n00bz{1_d0n't_l1k3_a3s_ch4ll3ng3_d0_y0u_lik3?_41703148ed8347adbe238ffbdbaf5e16}`