Eye4Cloud Open Platform Sign Generation Examples V1.0.1

curl -X POST http://localhost:13001/api/v2/token \
  -H "Content-Type: application/json" \
  -H "openid: tengda" \
  -H "authority: xxxxxxxx" \
  -d '{
    "DID": "device123",
    "IMEI": "imei456",
    "data": "test_data"
  }'

import (
    "crypto/md5"
    "encoding/hex"
    "fmt"
    "strconv"
)

func GenerateSignature(DID, IMEI, openid string, timestamp int64, nonce, data, secretKey string) string {
    // 拼接参数字符串
    concatenated := DID + IMEI + openid + strconv.FormatInt(timestamp, 10) + nonce + data + secretKey

    // 计算MD5哈希
    hash := md5.Sum([]byte(concatenated))

    // 返回32位小写hex字符串
    return hex.EncodeToString(hash[:])
}

    /**
     * 生成MD5签名token
     * @param DID 设备唯一标识
     * @param IMEI 设备IMEI号，可不传，
     * @param openid 开放平台ID，示例"tengda"
     * @param timestamp 时间戳（秒）
     * @param nonce 随机字符串
     * @param data 业务数据，可以不传
     * @param secretKey 签名密钥
     * @return MD5签名结果(32位小写hex字符串)，出错时返回null
     */
    public static String getTokenV2(String DID, String IMEI, String openid,
                                  long timestamp, String nonce,
                                  String data, String secretKey) {
        try {
            // 拼接字符串
            String concatenated = DID + IMEI + openid + timestamp + nonce + data + secretKey;

            // 获取MD5实例
            MessageDigest md = MessageDigest.getInstance("MD5");
            // 计算哈希值
            byte[] hashBytes = md.digest(concatenated.getBytes());

            // 转换为十六进制字符串
            StringBuilder hexString = new StringBuilder();
            for (byte b : hashBytes) {
                String hex = Integer.toHexString(0xff & b);
                if (hex.length() == 1) {
                    hexString.append('0');
                }
                hexString.append(hex);
            }

            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
    }

curl -X POST http://localhost:13001/api/v2/token \
  -H "Content-Type: application/json" \
  -H "openid: myopenid" \
  -H "token: xxxxxxxx" \
  -d '{
    "DID": "device123",
    "IMEI": "imei456",
    "data": "test_data"
  }'

npm install express cors

const express = require('express');
const crypto = require('crypto');
const app = express();
const PORT = 13001;

const SECRET_KEY = 'your_server_secret_key';

function generateConcatenatedString(DID, IMEI = '', openid, timestamp, nonce, data = '', secretKey) {
    return `${DID}${IMEI}${openid}${timestamp}${nonce}${data}${secretKey}`;
}

app.use(express.json());

app.post('/api/v2/token', (req, res) => {
    try {
        const openid = req.headers['openid'];
        const { DID, IMEI = '', data = '' } = req.body;

        if (!openid || !DID) {
            return res.status(200).json({
                error_code: 400,
                error_message: "Missing required parameters",
                data: {}
            });
        }

        const nonce = crypto.randomBytes(16).toString('hex');
        const timestamp = Math.floor(Date.now() / 1000);

        const concatenated = generateConcatenatedString(DID, IMEI, openid, timestamp, nonce, data, SECRET_KEY);
        const sign = crypto.createHash('md5').update(concatenated).digest('hex');

        res.status(200).json({
            error_code: 0,
            error_message: {},
            data: { sign, nonce, timestamp }
        });
    } catch (error) {
        console.error('API Error:', error);
        res.status(200).json({
            error_code: 500,
            error_message: "Internal server error",
            data: {}
        });
    }
});

app.listen(PORT, () => {
    console.log(`MD5 API服务运行在 http://localhost:${PORT}`);
});

curl 'https://open.eye4cloud.com/{{open_id}}/open/v1/device/generalSign' \
  -H 'Content-Type: application/json' \
  --data-raw '{
    "device_id": "xxxx",
    "timestamp": 1758867195,
    "nonce": "123456",
    "openId": "xxx",
    "secretKey": "xxx",
    "password": "xxxxx"
}'

{
    "error_code": 0,
    "error_message": "success",
    "error_tips": "",
    "data": {
      "sign":"xxxx"
    }
}