# WebAuthn / Passkeys (v0.12)

## Overview

The bundled Dex uses a custom WebAuthn connector for password-free
authentication. Passkeys are public-key credentials — the private key
never leaves the authenticator (TPM/security key/phone Secure Enclave).

## Registration

`orca auth register` opens the browser to the Dex WebAuthn endpoint.
After the ceremony (biometric/security key), Dex maps the credential
ID to an OIDC `sub`. Credentials stored at
`ClusterDir()/webauthn-credentials.db` (0600, public keys only).

## RP ID

The relying-party ID is the cluster's Traefik-served domain
(`--rp-id` on `orca auth init-idp`). HTTPS secure context is provided
by Traefik (step-ca cert, R-017).

## Bootstrap Sequence

1. `orca init` bootstraps the cluster CA (step-ca, mTLS-only).
2. `orca auth init-idp` deploys Dex behind Traefik (step-ca cert).
3. First operator registers a passkey via the mTLS-authenticated session.
4. Subsequent operators use WebAuthn.
