# [acme.js](https://git.coolaj86.com/coolaj86/acme.js) Free SSL for everybody. The bare essentials of the Let's Encrypt v2 (ACME) API. Built for [Greenlock](https://git.coolaj86.com/coolaj86/greenlock-express.js), [by request](https://git.coolaj86.com/coolaj86/greenlock.js/issues/5#issuecomment-8). | A [Root](https://therootcompany.com) Project | !["Monthly Downloads"](https://img.shields.io/npm/dm/acme-v2.svg "Monthly Download Count can't be shown") !["Weekly Downloads"](https://img.shields.io/npm/dw/acme-v2.svg "Weekly Download Count can't be shown") # Looking for Quick 'n' Easy™? This is intented for building ACME API clients in node.js. It is **not** a high-level, fully-integrated solution. You may be more interested in one of these: * Instant SSL Certificates in your Browser * [Greenlock for Web Browsers](https://git.coolaj86.com/coolaj86/greenlock.html) (Browser JavaScript) * [Greenlock for Web Servers](https://git.coolaj86.com/coolaj86/greenlock-cli.js) (Command line, like certbot) * [Greenlock for Express.js](https://git.coolaj86.com/coolaj86/greenlock-express.js) (Automated HTTPS for Express.js apps) * [Greenlock for node.js](https://git.coolaj86.com/coolaj86/greenlock.js) (Automated HTTPS for Proxies, Load-Balances, Servers, CLIs) * [goldilocks.js](https://git.coolaj86.com/coolaj86/goldilocks.js) (A Full-Blown WebServer) # Demonstration As this is intended to *build* ACME clients, there is not a simple 2-line example. I'd recommend first trying out one of the [greenlock-express.js](https://git.coolaj86.com/coolaj86/greenlock-express.js) or [Greenlock for Web Servers](https://git.coolaj86.com/coolaj86/greenlock-cli.js) examples, which are guaranteed to work and have great error checking to help you debug. Then I'd recommend running the example CLI client with a test domain and then investigating the files used for that example: ```bash git clone https://git.coolaj86.com/coolaj86/acme.js.git pushd acme.js/ node examples/cli.js ``` The example cli has the following prompts: ``` What web address(es) would you like to get certificates for? (ex: example.com,*.example.com) What challenge will you be testing today? http-01 or dns-01? [http-01] What email should we use? (optional) What directoryUrl should we use? [https://acme-staging-v02.api.letsencrypt.org/directory] Put the string 'mBfh0SqaAV3MOK3B6cAhCbIReAyDuwuxlO1Sl70x6bM.VNAzCR4THe4czVzo9piNn73B1ZXRLaB2CESwJfKkvRM' into a file at 'example.com/.well-known/acme-challenge/mBfh0SqaAV3MOK3B6cAhCbIReAyDuwuxlO1Sl70x6bM' echo 'mBfh0SqaAV3MOK3B6cAhCbIReAyDuwuxlO1Sl70x6bM.VNAzCR4THe4czVzo9piNn73B1ZXRLaB2CESwJfKkvRM' > 'example.com/.well-known/acme-challenge/mBfh0SqaAV3MOK3B6cAhCbIReAyDuwuxlO1Sl70x6bM' Then hit the 'any' key to continue... ``` When you've completed the challenge you can hit a key to continue the process. If you place the certificate you receive back in `tests/fullchain.pem` then you can test it with `examples/https-server.js`. ``` examples/cli.js examples/genkeypair.js examples/https-server.js examples/http-server.js ``` # Let's Encrypt v2 / ACME draft 11 Support This library (acme.js) supports ACME [*draft 11*](https://tools.ietf.org/html/draft-ietf-acme-acme-11), otherwise known as Let's Encrypt v2 (or v02). * ACME draft 11 * Let's Encrypt v2 * Let's Encrypt v02 ``` # Production URL https://acme-v02.api.letsencrypt.org/directory ``` ``` # Staging URL https://acme-staging-v02.api.letsencrypt.org/directory ``` # Install Install via npm ```bash npm install --save acme ``` Install via git ```bash npm install https://git.coolaj86.com/coolaj86/acme.js.git ``` # API This API is an evolution of le-acme-core, but tries to provide a better mapping to the new draft 11 APIs. Status: Almost stable, but **not semver locked**. Patch versions will not introduce breaking changes, but may introduce lower-level APIs. Minor versions may change return values to include more information. ### Overview ``` var ACME = require('acme').ACME; ACME.create(opts) acme.init(acmeDirectoryUrl) acme.accounts.create(opts) acme.certificates.create(opts) ``` ### Detailed Explanation ``` var ACME = require('acme').ACME; // Create Instance (Dependency Injection) var acme = ACME.create({ RSA: require('rsa-compat').RSA // other overrides , request: require('request') , promisify: require('util').promisify // used for constructing user-agent , os: require('os') , process: require('process') // used for overriding the default user-agent , userAgent: 'My custom UA String' , getUserAgentString: function (deps) { return 'My custom UA String'; } // don't try to validate challenges locally , skipChallengeTest: false }); // Discover Directory URLs acme.init(acmeDirectoryUrl) // returns Promise // Accounts acme.accounts.create(options) // returns Promise registration data { email: '' // valid email (server checks MX records) , accountKeypair: { // privateKeyPem or privateKeyJwt privateKeyPem: '' } , agreeToTerms: fn (tosUrl) {} // returns Promise with tosUrl } // Registration acme.certificates.create(options) // returns Promise { newAuthzUrl: '' // specify acmeUrls.newAuthz , newCertUrl: '' // specify acmeUrls.newCert , domainKeypair: { privateKeyPem: '' } , accountKeypair: { privateKeyPem: '' } , domains: [ 'example.com' ] , setChallenge: fn (hostname, key, val) // return Promise , removeChallenge: fn (hostname, key) // return Promise } ``` Helpers & Stuff ```javascript // Constants ACME.challengePrefixes['http-01'] // '/.well-known/acme-challenge' ACME.challengePrefixes['dns-01'] // '_acme-challenge' ``` # Changelog * v1.0.9 - update docs * v1.0.8 - rename to acme.js, remove backwards compat * v1.0.7 - improved error handling again, after user testing * v1.0.6 - improved error handling * v1.0.5 - cleanup logging * v1.0.4 - v6- compat use `promisify` from node's util or bluebird * v1.0.3 - documentation cleanup * v1.0.2 * use `options.contact` to provide raw contact array * made `options.email` optional * file cleanup * v1.0.1 * Compat API is ready for use * Eliminate debug logging * Apr 10, 2018 - tested backwards-compatibility using greenlock.js * Apr 5, 2018 - export http and dns challenge tests * Apr 5, 2018 - test http and dns challenges (success and failure) * Apr 5, 2018 - test subdomains and its wildcard * Apr 5, 2018 - test two subdomains * Apr 5, 2018 - test wildcard * Apr 5, 2018 - completely match api for acme v1 (le-acme-core.js) * Mar 21, 2018 - *mostly* matches le-acme-core.js API * Mar 21, 2018 - can now accept values (not hard coded) * Mar 20, 2018 - SUCCESS - got a test certificate (hard-coded) * Mar 20, 2018 - download certificate * Mar 20, 2018 - poll for status * Mar 20, 2018 - finalize order (submit csr) * Mar 20, 2018 - generate domain keypair * Mar 20, 2018 - respond to challenges * Mar 16, 2018 - get challenges * Mar 16, 2018 - new order * Mar 15, 2018 - create account * Mar 15, 2018 - generate account keypair * Mar 15, 2018 - get nonce * Mar 15, 2018 - get directory # Legal [acme.js](https://git.coolaj86.com/coolaj86/acme.js) | MPL-2.0 | [Terms of Use](https://therootcompany.com/legal/#terms) | [Privacy Policy](https://therootcompany.com/legal/#privacy)