AESUtil.java

package mo_phong_zalo2;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class AESUtil {
    private static final String KEY = "1234567890123456";

    public static byte[] encryptBytes(byte[] data) {
        try {
            SecretKeySpec key = new SecretKeySpec(KEY.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            return cipher.doFinal(data);
        } catch (Exception e) {
            return data;
        }
    }

    public static byte[] decryptBytes(byte[] encrypted) {
        try {
            SecretKeySpec key = new SecretKeySpec(KEY.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, key);
            return cipher.doFinal(encrypted);
        } catch (Exception e) {
            return encrypted;
        }
    }

    
    public static String encrypt(String text) {
        try {
            SecretKeySpec key = new SecretKeySpec(KEY.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            return Base64.getEncoder().encodeToString(cipher.doFinal(text.getBytes()));
        } catch (Exception e) {
            return text;
        }
    }

    public static String decrypt(String encrypted) {
        try {
            SecretKeySpec key = new SecretKeySpec(KEY.getBytes(), "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, key);
            return new String(cipher.doFinal(Base64.getDecoder().decode(encrypted)));
        } catch (Exception e) {
            return encrypted;
        }
    }
}