Understanding WebAuthn credential protection policy
Summary
The post explains WebAuthn credential protection policy extensions (CTAP 2.1) and how to configure credential discovery and protection using residentKey and credentialProtectionPolicy. It covers how the authenticator enforces discovery rules, the role of the relying party in verification, browser support (Chrome and Firefox vs Safari), and the implications of enforceCredentialProtectionPolicy. The article includes code examples and discusses potential tradeoffs and security considerations when enabling these policies.