腾讯云点播上传签名

const crypto = require('crypto');

function generateUploadSignature(secretId, secretKey, policy) {
    const policyBase64 = Buffer.from(JSON.stringify(policy)).toString('base64');
    const signature = crypto.createHmac('sha1', secretKey)
                            .update(policyBase64)
                            .digest('base64');
    return {
        accessKeyId: secretId,
        signature: signature,
        policy: policyBase64
    };
}

const secretId = 'YOUR_SECRET_ID';
const secretKey = 'YOUR_SECRET_KEY';
const policy = {
    expiration: '2023-12-01T12:00:00Z',
    conditions: [
        ['content-length-range', 0, 104857600]
    ]
};

const signature = generateUploadSignature(secretId, secretKey, policy);
console.log(signature);