baidu sdk 鉴权处理(nodejs)

const { Auth } = require('bce-sdk-js');



const accessKey = 'aaaaaaaaaaaaa';

const secretKey = 'sssssssssssss';

const bdauth = new Auth(accessKey, secretKey);

const HEADER = {

    'Host': 'bcc.bj.baidubce.com',

    'Content-Type': 'application/json; charset=UTF-8',

    'x-bce-date': new Date().toISOString().replace(/\.\d+Z$/, 'Z')

};

const Authorization = bdauth.generateAuthorization('GET', '/v2/image', { maxKeys: 1000, imageType: 'All' }, HEADER);

class authorization {

    constructor() {

        this.accessKey = ask.ak;

        this.secretKey = ask.sk;

        this.host = 'bcc.bj.baidubce.com';

        this.utcTimestamp = new Date().toISOString().replace(/\.\d+Z$/, 'Z');

        this.expireTime = 1800;

    }

    getAuthorization(method, uri, params, header, body) {

        let authStringPrefix = `bce-auth-v1/${this.accessKey}/${this.utcTimestamp}/${this.expireTime}`;

        let SigningKey = crypto.createHmac('sha256', this.secretKey.toString('ascii')).update(authStringPrefix).digest('hex');

        let HEADER = {

            'host': this.host,

            'content-type': 'application%2Fjson%3B+charset%3Dutf-8',

            'x-bce-date': this.utcTimestamp,

            ...header

        };

        const OBJKeySort = (obj) => {

            const newkey = Object.keys(obj).sort();

            const newObj = {};

            for (var i = 0; i < newkey.length; i++) {

                newObj[newkey[i]] = obj[newkey[i]];

            }

            return newObj;

        };

        HEADER = OBJKeySort(HEADER)

        let headerArr = [];

        for (let name in HEADER) {

            let val = HEADER[name];

            headerArr.push(`${name.toLowerCase()}:${val}`);

        }

        let signedHeaders = Object.keys(HEADER).join(';');

        let requestStr = `${method}\n${uri}\n${params?qs.stringify(params)+'\n':''}${headerArr.join('\n')}`;

        let Signature = crypto.createHmac('sha256', SigningKey.toString('ascii')).update(requestStr).digest('hex');

        return `${authStringPrefix}/${signedHeaders}/${Signature}`;

    }

}

module.exports = authorization;