aws-cloudfront-sign/dist/esm/cloudfront-signer.js

Utility module for signing AWS CloudFront URLs

import { URL } from 'node:url';
import { getPrivateKey, createPolicy, createPolicySignature, getExpireTime, getIpRange, normalizeBase64 } from './utils';
export function getSignedUrl(cfUrl, params) {
    const privateKey = getPrivateKey(params);
    const policy = createPolicy(cfUrl, getExpireTime(params), getIpRange(params));
    const signature = createPolicySignature(policy, privateKey);
    const policyStr = Buffer.from(policy.toJSON()).toString('base64');
    const parsedUrl = new URL(cfUrl);
    parsedUrl.searchParams.set('Expires', `${policy.expireTime}`);
    parsedUrl.searchParams.set('Policy', normalizeBase64(policyStr));
    parsedUrl.searchParams.set('Signature', normalizeBase64(signature));
    parsedUrl.searchParams.set('Key-Pair-Id', params.keypairId);
    return parsedUrl.toString();
}
export function getSignedRTMPUrl() {
    throw new Error('Amazon CloudFront has deprecated RTMP distributions. For more information see https://repost.aws/questions/QUoUZgHZh7SEWlnQUPlBmVNQ/announcement-rtmp-support-discontinuing-on-december-31-2020');
}
export function getSignedCookies(cfUrl, params) {
    const privateKey = getPrivateKey(params);
    const policy = createPolicy(cfUrl, getExpireTime(params), getIpRange(params));
    const signature = createPolicySignature(policy, privateKey);
    const policyStr = Buffer.from(policy.toJSON()).toString('base64');
    const cookies = {};
    cookies['CloudFront-Policy'] = normalizeBase64(policyStr);
    cookies['CloudFront-Signature'] = normalizeBase64(signature);
    cookies['CloudFront-Key-Pair-Id'] = params.keypairId;
    return cookies;
}
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