Webauthn Framework
v4.8
v4.8
  • WebAuthn: Strong Authentication for your PHP applications
  • The project
    • What is Webauthn?
    • Web Browser Support
    • Installation
    • Contributing
  • Webauthn In A Nutshell
    • Authenticators
    • Ceremonies
    • User Verification
    • Metadata Statement
    • Extensions
  • Prerequisites
    • The Relying Party
    • Credential Source
    • User Entity
    • Javascript
  • Pure PHP
    • Webauthn Server
    • Input Loading
    • Input Validation
    • Register Authenticators
    • Authenticate Your Users
    • Advanced Behaviours
      • Debugging
      • User Verification
      • Authenticator Selection Criteria
      • Authentication without username
      • Authenticator Algorithms
      • Attestation and Metadata Statement
      • Extensions
      • Authenticator Counter
      • Dealing with “localhost”
  • Symfony Bundle
    • Bundle Installation
    • Credential Source Repository
    • User Entity Repository
    • Firewall
    • Configuration References
    • Advanced Behaviors
      • Register Additional Authenticators
      • Debugging
      • User Verification
      • Attestation and Metadata Statement
      • Authenticator Selection Criteria
      • Authentication without username
      • Extensions
      • Authenticator Counter
      • Dealing with “localhost”
  • Migration
    • From v3.x to v4.0
    • From 4.x to 5.0
  • Symfony UX
    • Installation
    • Integration
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  1. Webauthn In A Nutshell

Extensions

PreviousMetadata StatementNextThe Relying Party

Last updated 1 year ago

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This page is about an advanced feature. You can skip it if you are new with Webauthn

The mechanism for generating public key credentials, as well as requesting and generating Authentication assertions, can be extended to suit particular use cases. Each case is addressed by defining a registration extension.

Standard extensions are usually listed in the dedicated IANA Registry available at

This library is ready to handle extension inputs and outputs, but no concrete implementations are provided, except for the appid extension.

It is up to you, depending on the extensions you want to support, to create the extension handlers.

https://www.iana.org/assignments/webauthn/webauthn.xhtml