腾讯云点播 web播放器 签名

const crypto = require('crypto');

function generateSignature(secretId, secretKey, videoId, expireTime) {
    const currentTime = Math.floor(Date.now() / 1000);
    const expireTimestamp = currentTime + expireTime;

    const stringToSign = `GET\n/v2/index.php\n/vod/${videoId}\nplayid=1&expire=${expireTimestamp}`;

    const hmac = crypto.createHmac('sha1', secretKey);
    hmac.update(stringToSign);
    const signature = hmac.digest('base64');

    return {
        url: `https://vod.tencentcloudapi.com/v2/index.php/vod/${videoId}?playid=1&expire=${expireTimestamp}&signature=${encodeURIComponent(signature)}&secretId=${secretId}`,
        expireTime: expireTimestamp
    };
}

// 使用示例
const secretId = 'your_secret_id';
const secretKey = 'your_secret_key';
const videoId = 'your_video_id';
const expireTime = 3600; // 签名有效期，单位秒

const signedUrl = generateSignature(secretId, secretKey, videoId, expireTime);
console.log('Signed URL:', signedUrl.url);
console.log('Expire Time:', signedUrl.expireTime);