web-auth/webauthn-lib: this is the core library. This package can be used in any PHP project or within any popular framework (Laravel, CakePHP…)
web-auth/webauthn-symfony-bundle: this is a Symfony bundle that ease the integration of this authentication mechanism in your Symfony project.
web-auth/metadata-service. What are these dependencies?
web-auth/cose-libcontains several cipher algorithms and COSE key support to verify the digital signatures sent by the authenticators during the creation and authentication ceremonies. These algorithms are compliant with the RFC8152. This library can be used by any other PHP projects. At the moment only signature algorithms are available, but it is planned to add encryption algorithms.
web-auth/metadata-serviceprovides classes to support the Fido Alliance Metadata Service. If you plan to use Attestation Statements during the creation ceremony, this service is mandatory. Please note that Attestation Statements decreases the user privacy as they may leak data that allow to identify a specific user. The use of Attestation Statements and this service are generally not recommended unless you REALLY need this information. This library can also be used by any other PHP projects.