webauthn
NPM: @hexagon\webauthn | Deno.land: webauthn
Slim Webauthn library with ES6, Deno and Node (>=16) support. Heavily based on fido2-lib.
Currently in pre-release
Example for both Deno and Node available at github.com/Hexagon/webauthn-skeleton
Features
Specific to @hexagon/webauthn
- Supports Deno and recent versions of Node (>=16)
- Pure ESM code base
- Bundled distributable, no remote dependencies
Inherited from fido2-lib
- Works with Windows Hello, Android lock screen, Yubikeys
- Attestation formats: packed, tpm, android-safetynet, fido-u2f, none
- Convenient API for adding more attestation formats
- Convenient API for adding extensions
- Metadata service (MDS) support enables authenticator root of trust and authenticator metadata
- Support for multiple simultaneous metadata services (e.g. FIDO MDS 1 & 2)
- Crypto families: ECDSA, RSA
- x509 cert parsing, support for FIDO-related extensions, and NIST Public Key Interoperability Test Suite (PKITS) chain validation (from pki.js)
- Returns parsed and validated data, along with extra audit data for risk engines
Installation
Deno
Import dist/webauthn.js
using your favorite metod. The module is available at deno.land/x/webauthn, jsdelivr, npm, unpkg etc.
import { Webauthn } from "https://cdn.jsdelivr.net/gh/hexagon/webauthn@0/dist/webauthn.js";
// ...
Node.js
npm install @hexagon/webauthn --save
// ESM Import ...
import { Webauthn } from "@hexagon/webauthn";
// ... or CommonJS
const { Webauthn } = await import("@hexagon/webauthn");
Usage
Examples
All examles assumes you have imported webauthn as described under 'Installation'.
@hexagon/webauthn uses the same interface as fido2-lib
Instantiate Library (Simple):
// create a new instance of the library
var f2l = new Webauthn();
Instantiate Library (Complex):
// could also use one or more of the options below,
// which just makes the options calls easier later on:
var f2l = new Webauthn({
timeout: 42,
rpId: "example.com",
rpName: "ACME",
rpIcon: "https://example.com/logo.png",
challengeSize: 128,
attestation: "none",
cryptoParams: [-7, -257],
authenticatorAttachment: "platform",
authenticatorRequireResidentKey: false,
authenticatorUserVerification: "required"
});
Registration:
var registrationOptions = await f2l.attestationOptions();
// make sure to add registrationOptions.user.id
// save the challenge in the session information...
// send registrationOptions to client and pass them in to `navigator.credentials.create()`...
// get response back from client (clientAttestationResponse)
var attestationExpectations = {
challenge: "33EHav-jZ1v9qwH783aU-j0ARx6r5o-YHh-wd7C6jPbd7Wh6ytbIZosIIACehwf9-s6hXhySHO-HHUjEwZS29w",
origin: "https://localhost:8443",
factor: "either"
};
var regResult = await f2l.attestationResult(clientAttestationResponse, attestationExpectations); // will throw on error
// registration complete!
// save publicKey and counter from regResult to user's info for future authentication calls
Authentication:
var authnOptions = await f2l.assertionOptions();
// add allowCredentials to limit the number of allowed credential for the authentication process. For further details refer to webauthn specs: (https://www.w3.org/TR/webauthn-2/#dom-publickeycredentialrequestoptions-allowcredentials).
// save the challenge in the session information...
// send authnOptions to client and pass them in to `navigator.credentials.get()`...
// get response back from client (clientAssertionResponse)
var assertionExpectations = {
// Remove the following comment if allowCredentials has been added into authnOptions so the credential received will be validate against allowCredentials array.
// allowCredentials: [{
// id: "lTqW8H/lHJ4yT0nLOvsvKgcyJCeO8LdUjG5vkXpgO2b0XfyjLMejRvW5oslZtA4B/GgkO/qhTgoBWSlDqCng4Q==",
// type: "public-key",
// transports: ["usb"]
// }],
challenge: "eaTyUNnyPDDdK8SNEgTEUvz1Q8dylkjjTimYd5X7QAo-F8_Z1lsJi3BilUpFZHkICNDWY8r9ivnTgW7-XZC3qQ",
origin: "https://localhost:8443",
factor: "either",
publicKey: "-----BEGIN PUBLIC KEY-----\n" +
"MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAERez9aO2wBAWO54MuGbEqSdWahSnG\n" +
"MAg35BCNkaE3j8Q+O/ZhhKqTeIKm7El70EG6ejt4sg1ZaoQ5ELg8k3ywTg==\n" +
"-----END PUBLIC KEY-----\n",
prevCounter: 362
};
var authnResult = await f2l.assertionResult(clientAssertionResponse, assertionExpectations); // will throw on error
// authentication complete!
Full demo for both Deno and Node available at github.com/Hexagon/webauthn-skeleton/tree/server/deno
Contributing
See Contribution Guide for general guidelines.
Development
Command | Description |
---|---|
deno task test |
Run deno tests |
deno task coverage |
Run deno tests and display coverage |
deno lint |
Lint code base |
npm run typings |
Build typings (using tsc) |
npm run docs |
Build docs (using jsdoc) |
npm run test |
Run node tests (against distributable) |
deno task build |
Run all sorts of checks, then builds the bundle and tests the bundle using node |
File structure
Path | Description |
---|---|
/lib |
Source code base folder |
/lib/attestation/ |
Attestation plug-ins |
/lib/webauthn.js |
Deno entrypoint |
/lib/toolbox.js |
Deno external dependencies and shims |
/test/node |
Node tests |
/test/deno |
Deno tests |
/docs |
Documentation |
Dependencies
All dependencies are bundled in distributable (dist/webauthn.js
)
For details, see /import_map.json
Contributors
The underlying code is heavily based on github.com/webauthn-open-source/fido2-lib
License
MIT