object storage

/
  sid
    {session_id} -> (user_id,identity_hash,timestamp)
    ...
  otp
    {otp_token} -> (user_id,identity_hash,timestamp)
    ...  
  pk
    {identity_hash}
      {user_id} -> {user}
        {passkey}
        {passkey}
    ...

Sessions

graph TD;
  A[Request user page] --> B[Session cookie?];
  B -- Yes --> C[Extract username/email] --> D[Still valid?]
  D -- Yes --> J(("<b>Show<br>user page</b>"))
  D -- No --> G
  B -- No --> E["<i>Login page</i><br>Ask for username/email"] --> F[Passkey in db?]
  F -- Yes --> G[Ask for passkey]
  F -- No -->  M[Email OTP bound to username/email]
  M -- Visit --> H[Create and store passkey]
  H --> G
  G -- Success --> K[Session cookie] --> J
  G -- Failure --> N[Reset?]
  N -- Yes --> M
  N -- No --> G

Loading

Two session cookies are used, one for the server and one for javascript:

• st
  contains the session expiration timestamp (millis)

• sid http-only
  contains the session id

API requests return 403 FORBIDDEN if sid is missing or expired.

For user scoped html pages, the server first checks if the sid exists and has user info, and if not redirects to the login page.

The page itself should check the st cookie and if missing or expired, it should trigger the passkey auth.