self-cert

This is a simple library for generating a self-signed x509 keypair and certificate.

Installation

CDN

Import library from the UNPKG CDN for fast and easy setup:

import {create} from "//unpkg.com/@raha.group/self-cert?module";

NPM registry

Use the package manager npm to install self-cert.

$ npm install "@raha.group/self-cert"

Usage

Self-signed Certificate

1. Create a new project with the entry point "index.mjs".
2. Add the project dependency by npm i "@raha.group/self-cert".
3. Put the following script in file "index.mjs".

import {create as createCertificate} from '@raha.group/self-cert';
import fs from 'fs/promises';
import os from 'os';

let hosts = [];
for (let networkInterface of Object.values(os.networkInterfaces())) {
    for (let assignedNetworkAddress of networkInterface) {
        hosts.push(assignedNetworkAddress.address);
    }
}

let certificate = createCertificate({
    domains: [ // List the hostnames (including wildcards) on your origin that the certificate should protect.
        'localhost',
        '*.local', // wildcards
        ...hosts
    ],
    expires: new Date(2025, 1),
    /*
    attributes: {
        commonName: domains[0],
        countryName: 'IR',
        stateName: 'Isfahan',
        locality: 'Isfahan',
        organizationName: 'None',
    },
    keySize: 2048,
    */
});
await fs.writeFile('privateKey.pem', certificate.privateKey);
await fs.writeFile('publicKey.pem', certificate.publicKey);
await fs.writeFile('fullChain.pem', certificate.fullChain);

Basic HTTPS

Here is an example for creating an SSL key/cert on the fly, and running an HTTPS server on port 443. Use https://localhost:443 to access created server.

import {create as createCertificate} from '@raha.group/self-cert';
import https from 'https';

let certificate = createCertificate({
    domains: ['localhost'],
});
https.createServer({key: certificate.privateKey, cert: certificate.fullChain}, function(request, response) {
    response.end('Hello World :-)');
}).listen(443);