WebDevAuthn

Debug FIDO2 requests and responses
What is WebDevAuthn?
WebDevAuthn is a Chrome extension that provides powerful tools to debug FIDO2/WebAuthn requests and responses. It captures WebAuthn requests, analyses options, and unpacks authenticator responses. With the virtual authenticator device, you can simulate custom responses and test implementations. Ideal for developers and security enthusiasts.

Extension stats

By: DinoDevs
Users: 450 ▲ 6
Version: 0.5 (Last updated: 2022-03-07)
Creation date: 2022-03-07
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Permissions:
  • storage
Host permissions:
  • <all_urls>
Size: 19.00K

Other platforms

Not available on Firefox
Not available on Edge
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Extension summary

Analyse FIDO2/WebAuthn requests and responses

Analyser Features:

  • Capture WebAuthn requests
  • Analyse WebAuthn options (show info, warnings & errors)
  • Unpack/Decode WebAuthn authenticator responses
  • Virtual Authenticator Device (for custom responses)

Virtual Authenticator Device

  • OS independent
  • Supports packed attestation
  • Supports wrapped keys to credentials id
  • Access to the private key of the generated credentials
  • Testing mode to assess implementations
  • Multiple supported algorithms

Extension safety

Risk impact

WebDevAuthn requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

WebDevAuthn has earned a good reputation and can be trusted.

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