Baidu AI 인터페이스가 Java 개발 중에 데이터 암호화 및 암호 해독을 구현하는 방법

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class AESUtil {

    private static final String AES_ALGORITHM = "AES";
    
    public static String encrypt(String data, String key) throws Exception {
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), AES_ALGORITHM);
        Cipher cipher = Cipher.getInstance(AES_ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
        byte[] encryptedBytes = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
        return Base64.getEncoder().encodeToString(encryptedBytes);
    }
    
    public static String decrypt(String encryptedData, String key) throws Exception {
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), AES_ALGORITHM);
        Cipher cipher = Cipher.getInstance(AES_ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
        byte[] decryptedBytes = cipher.doFinal(Base64.getDecoder().decode(encryptedData));
        return new String(decryptedBytes, StandardCharsets.UTF_8);
    }
    
    public static void main(String[] args) throws Exception {
        String data = "This is sensitive information.";
        String key = "this_is_the_secret_key";

        String encryptedData = encrypt(data, key);
        System.out.println("Encrypted data: " + encryptedData);

        String decryptedData = decrypt(encryptedData, key);
        System.out.println("Decrypted data: " + decryptedData);
    }
}