@nos-sdk/nos-node-sdk/dest/lib/authorization.js

NOS Node.js SDK实现了NOS对象操作接口，基于此SDK能方便快速地实现JavaScript应用程序来使用NOS的对象存储服务。

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const crypto_1 = require("crypto");
const ramda_1 = require("ramda");
const ramda_adjunct_1 = require("ramda-adjunct");
const resource_1 = require("./resource");
// lower-case header name
const normalizeHeaders = ramda_adjunct_1.renameKeysWith(ramda_1.toLower);
const canonicalizedHeaders = ramda_1.pipe(ramda_1.pickBy((_, key) => key.startsWith('x-nos-')), ramda_1.toPairs, ramda_1.sortBy(ramda_1.prop('0')), ramda_1.map(ramda_1.join(':')), ramda_1.join('\n'));
const normalizeDate = function (date) {
    return new Date(date).toUTCString();
};
const joinParts = ramda_1.join('\n');
function signature(secretKey, verb, headers, resource) {
    headers = normalizeHeaders(headers);
    const contentMD5 = headers['content-md5'] || '';
    const contentType = headers['content-type'] || '';
    const date = normalizeDate(headers['date'] || Date.now());
    const parts = [
        verb.toUpperCase(),
        contentMD5,
        contentType,
        date,
        `${canonicalizedHeaders(headers)}\n${resource_1.getResourceString(resource)}`.trim(),
    ];
    const hmac = crypto_1.createHmac('sha256', secretKey);
    const content = joinParts(parts);
    hmac.update(content);
    return hmac.digest('base64');
}
exports.signature = signature;
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