https://github.com/descope/virtualwebauthn

A set of helper tools for testing WebAuthn authentication flows
https://github.com/descope/virtualwebauthn

authentication automation biometric descope fido fido2 golang passkeys test-automation testing-tools webauthn

Last synced: 20 days ago
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A set of helper tools for testing WebAuthn authentication flows

• Host: GitHub
• URL: https://github.com/descope/virtualwebauthn
• Owner: descope
• License: mit
• Created: 2022-07-14T10:20:11.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-09-16T13:36:28.000Z (3 months ago)
• Last Synced: 2024-11-08T08:44:01.896Z (about 1 month ago)
• Topics: authentication, automation, biometric, descope, fido, fido2, golang, passkeys, test-automation, testing-tools, webauthn
• Language: Go
• Homepage:
• Size: 68.4 KB
• Stars: 73
• Watchers: 13
• Forks: 9
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Codeowners: .github/CODEOWNERS

Awesome Lists containing this project

• awesome-webauthn - Descope: VirtualWebAuthn Test Tool - A GO package to automate testing of a relying party WebAuthn server implementation without requiring a browser or an actual authenticator. (Dev tools)

README

        

# Virtual WebAuthn

The Go package `virtualwebauthn` provides a set of helper tools for testing full [WebAuthn](https://fidoalliance.org/fido2-2/fido2-web-authentication-webauthn) authentication flows in a [relying party](https://www.w3.org/TR/webauthn-2/#webauthn-relying-party) WebAuthn server implementation without requiring a browser or an actual authenticator.

Check the [test](test/webauthn_test.go) for a working example on how to use this library.

## Features

- Test both register/attestation and login/assertion flows

- Validate credential [creation](https://www.w3.org/TR/webauthn-2/#sctn-credentialcreationoptions-extension) and [request](https://www.w3.org/TR/webauthn-2/#sctn-credentialrequestoptions-extension) options

- Generate [attestation](https://www.w3.org/TR/webauthn-2/#authenticatorattestationresponse) and [assertion](https://www.w3.org/TR/webauthn-2/#authenticatorassertionresponse) responses

- Supports `EC2` and `RSA` keys with `SHA256`

- Supports `packed` attestation format

## Usage

### Setup

First we create mock entities to work with for running tests.

```go

// The relying party settings should mirror those on the actual WebAuthn server

rp := virtualwebauthn.RelyingParty{Name: "Example Corp", ID: "example.com", Origin: "https://example.com"}

// A mock authenticator that represents a security key or biometrics module

authenticator := virtualwebauthn.NewAuthenticator()

// Create a new credential that we'll try to register with the relying party

credential := virtualwebauthn.NewCredential(virtualwebauthn.KeyTypeEC2)

```

### Register

Start a register flow with the relying party and get an `attestationOptions` JSON string that contains the serialized [credential creation options](https://www.w3.org/TR/webauthn-2/#sctn-credentialcreationoptions-extension):

```go

// Ask the server to start a register flow for a user. The server and user here

// are placeholders for whatever the system being tested uses.

attestationOptions := server.registerStart(user)

```

Use the `ParseAttestationOptions` and `CreateAttestationResponse` functions to parse the `attestationOptions` string, ensure that it's valid, and generate an appropriate `attestationResponse` that should appear to have come from a browser's `navigator.credentials.create` call:

```go

// Parses the attestation options we got from the relying party to ensure they're valid

parsedAttestationOptions, err := virtualwebauthn.ParseAttestationOptions(attestationOptions)

if err != nil {

    ...

}

// Creates an attestation response that we can send to the relying party as if it came from

// an actual browser and authenticator.

attestationResponse := virtualwebauthn.CreateAttestationResponse(rp, authenticator, credential, *parsedAttestationOptions)

```

We can now go back to the relying party with the `attestationResponse` and finish the register flow:

```go

// Finish the register flow by sending the attestation response. Again the server and

// user here are placeholders for whatever the system being tested uses.

err := server.registerFinish(user, attestationResponse)

if err != nil {

    ...

}

// Add the EC2 credential to the mock authenticator

authenticator.AddCredential(credential)

```