请求中的imei与mac字段均需通过AES算法进行加密，并且将加密后的二进制数据通过base64编码为字符串。为了方便配置，示例中的密钥是经过base64处理后的字符串(base64Key)。base64Key在接入时由OPPO提供。 Base64Key: XGAXicVG5GMBsx5bueOe4w==

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

public class AesEncryptionExample {
    private static final String base64Key = "XGAXicVG5GMBsx5bueOe4w==";

    public static void main(String[] args) {
        String imei = "0123456789";
        String mac = "00:11:22:33:44:55";

        try {
            // 加密
            byte[] encryptedImei = encrypt(imei, base64Key);
            byte[] encryptedMac = encrypt(mac, base64Key);

            // 将加密后的二进制数据通过Base64编码为字符串
            String encodedImei = Base64.getEncoder().encodeToString(encryptedImei);
            String encodedMac = Base64.getEncoder().encodeToString(encryptedMac);

            System.out.println("加密后的IMEI: " + encodedImei);
            System.out.println("加密后的MAC: " + encodedMac);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static byte[] encrypt(String data, String key) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);

        return cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
    }
}