Authentification

Outcome: Complete the task with Authentification (Authentication). User context: Une passkey prouve qui est le propriétaire d'un compte qui revient avant de lancer une nouvelle session. Technical concept or control: Authentification (Authentication). Why it fits: Utilisez des flux sécurisés avec limites de débit et récupération. Ajoutez des options multi-facteurs lorsque le risque le nécessite. Do not use it when: N'inventez jamais votre propre système de stockage de mots de passe et ne révélez pas si un compte sensible existe. Engineering requirements: Define inputs, outputs, contracts, and rules that must always hold. Set authorization and input checks. Define failures, timeouts, retries, one-time effects, data moves, and compatibility limits. Operations: Add useful signals and logs that hide sensitive data. Set capacity limits and write an operator guide. Test recovery and rollback. Acceptance criteria: Contract and failure-path tests pass. Data and authorization rules still hold during retries and partial failures. Check performance limits, monitoring, recovery, and rollback. Evidence and limits (evidence boundary): Aucun standard officiel unique ne régit l’ensemble du terme. Sa signification peut varier selon les équipes, plateformes ou frameworks. Unknowns to confirm: Where the code runs, data stores, traffic shape, consistency needs, and the security boundary. Also confirm the compatibility period, service goals, and rollback limits.