🔐 Lightweight library for getting Free SSL certifications through Let's Encrypt v2, using ACME (RFC 8555) https://greenlock.domains
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README.md

acme-v2.js (draft 11)

| Sponsored by ppl

A framework for building letsencrypt v2 (IETF ACME draft 11) clients, successor to le-acme-core.js.

Summary of spec that I'm working off of here: https://git.coolaj86.com/coolaj86/greenlock.js/issues/5#issuecomment-8

Let's Encrypt Directory URLs

# Production URL
https://acme-v02.api.letsencrypt.org/directory
# Staging URL
https://acme-staging-v02.api.letsencrypt.org/directory

Two API versions, Two Implementations

This library (acme-v2.js) supports ACME draft 11, otherwise known as Let's Encrypt v2 (or v02).

  • ACME draft 11
  • Let's Encrypt v2
  • Let's Encrypt v02

The predecessor (le-acme-core) supports Let's Encrypt v1 (or v01), which was a hodge-podge of various drafts of the ACME spec early on.

  • ACME early draft
  • Let's Encrypt v1
  • Let's Encrypt v01

This library maintains compatibility with le-acme-core so that it can be used as a drop-in replacement and requires no changes to existing code, but also provides an updated API more congruent with draft 11.

Status: Stable, Locked, Bugfix-only

var RSA = require('rsa-compat').RSA;
var acme = require('acme-v2/compat.js').ACME.create({ RSA: RSA });

//
// Use exactly the same as le-acme-core
//

See documentation at https://git.coolaj86.com/coolaj86/le-acme-core.js

draft API (dev)

Status: Almost stable, not locked

This API is a simple evolution of le-acme-core, but tries to provide a better mapping to the new draft 11 APIs.

var ACME = require('acme-v2').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
});
// Accounts
ACME.accounts.create(options)                 // returns Promise<regr> registration data

    { email: '<email>'                        //    valid email (server checks MX records)
    , accountKeypair: {                       //    privateKeyPem or privateKeyJwt
        privateKeyPem: '<ASCII PEM>'
      }
    , agreeToTerms: fn (tosUrl) {}            //    returns Promise with tosUrl
    }


// Registration
ACME.certificates.create(options)             // returns Promise<pems={ privkey (key), cert, chain (ca) }>

    { newAuthzUrl: '<url>'                    //    specify acmeUrls.newAuthz
    , newCertUrl: '<url>'                     //    specify acmeUrls.newCert

    , domainKeypair: {
        privateKeyPem: '<ASCII PEM>'
      }
    , accountKeypair: {
        privateKeyPem: '<ASCII PEM>'
      }
    , domains: [ 'example.com' ]

    , setChallenge: fn (hostname, key, val)   // return Promise
    , removeChallenge: fn (hostname, key)     // return Promise
    }


// Discovery URLs
ACME.init(acmeDirectoryUrl)                   // returns Promise<acmeUrls={keyChange,meta,newAccount,newNonce,newOrder,revokeCert}>

Helpers & Stuff

// Constants
ACME.challengePrefixes['http-01']             // '/.well-known/acme-challenge'
ACME.challengePrefixes['dns-01']              // '_acme-challenge'

Todo

  • support ECDSA keys
  • Apr 5, 2018 - appears that sometimes 'pending' status cannot be progressed to 'processing' nor 'deactivated'
    • this may be a bug in the staging API as it appears it cannot be cancelled either, but returns success status code

Changelog

  • v1.0.0
    • 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