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Passkey Store

Component Detail

Data Layer medium complexity backend
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Description

Persistence layer for WebAuthn credentials including public keys, credential IDs, signature counters, and device metadata. Supports multiple passkeys per user across devices.

Feature: Passkeys (WebAuthn)

passkey-store

Sources & reasoning

Passkeys are not named in source docs; included because the blueprint authoritatively lists 'Passkeys (WebAuthn)' as a required feature in Authentication & Access Control. With no source signal it falls under §5 Phase 3 'Vekst og engasjement' as a forward-looking auth enhancement; target_release uses that phase's verbatim name 'Growth & Engagement'.

No source references — this artifact was included based on reasoning alone (see above).

Responsibilities

  • Persist credential public keys and IDs per user
  • Track signature counters for replay detection
  • Store device labels and last-used timestamps
  • Look up credentials by credential ID during authentication
  • Delete passkeys on user request or account closure

Interfaces

savePasskey(userId, credential): Passkey
findByCredentialId(credentialId): Passkey
listByUser(userId): Passkey[]
updateCounter(passkeyId, counter): void
deletePasskey(passkeyId): void