How to ensure the safe transmission and confidentiality of data when connecting to Baidu AI interface in Java development

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;

public class HttpsRequest {
    public static void main(String[] args) throws Exception {
        String url = "https://aip.baidubce.com/api/xxx";
        URL obj = new URL(url);
        HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

        // 设置请求方法为POST
        con.setRequestMethod("POST");

        // 添加请求头部信息，如API Key等
        con.setRequestProperty("Content-Type", "application/json");
        con.setRequestProperty("API-Key", "your-api-key");

        // 发送POST请求
        con.setDoOutput(true);

        // 接收和处理返回结果
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuilder response = new StringBuilder();
        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        // 输出返回结果
        System.out.println(response.toString());
    }
}

import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Base64;
import javax.crypto.Cipher;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

public class AiApiRequest {
    public static void main(String[] args) throws Exception {
        String url = "https://aip.baidubce.com/api/xxx";
        String apiKey = "your-api-key";
        String secretKey = "your-secret-key";

        // 构造请求参数
        JSONObject params = new JSONObject();
        params.put("key1", "value1");
        params.put("key2", "value2");
        String requestBody = params.toString();

        // 加密请求参数
        String encryptRequestBody = encrypt(requestBody, secretKey);

        // 构建HTTP请求
        HttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);

        // 设置请求头部信息
        httpPost.setHeader(HttpHeaders.CONTENT_TYPE, "application/json");
        httpPost.setHeader(HttpHeaders.AUTHORIZATION, "Bearer " + apiKey);

        // 设置请求体内容
        StringEntity entity = new StringEntity(encryptRequestBody);
        httpPost.setEntity(entity);

        // 发送HTTP请求
        HttpResponse response = httpClient.execute(httpPost);

        // 处理返回结果
        HttpEntity responseEntity = response.getEntity();
        String responseBody = EntityUtils.toString(responseEntity, StandardCharsets.UTF_8);

        // 输出返回结果
        System.out.println(responseBody);
    }

    private static String encrypt(String requestBody, String secretKey) throws Exception {
        byte[] keyBytes = Base64.getDecoder().decode(secretKey);
        PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PrivateKey privateKey = keyFactory.generatePrivate(keySpec);
        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.ENCRYPT_MODE, privateKey);
        byte[] encryptedBytes = cipher.doFinal(requestBody.getBytes(StandardCharsets.UTF_8));
        return Base64.getEncoder().encodeToString(encryptedBytes);
    }
}