chore: proof of code

emailflow.md

@@ -81,3 +81,55 @@ sequenceDiagram
 ```
 
 
+
+----
+## Demo day proof of code
+---
+
+
+```
+sequenceDiagram
+    autoNumber
+    actor U as SIGit User
+    participant W as SIGit Website
+    participant D as Server
+    Participant DB 
+    Note over W,D: All comms encrypted with throwaway <br>(ephemeral) client keys and a <br>.well-known server key
+    U->>W: Click SIGNUP 
+    U->>W: Provide Email and Complex Password
+    Note over W: Validate Email<br>Ensure Complex Password<br>(Min 21 chars)
+
+    Note right of U: User is warned that they CANNOT<br>RESET PASSWORD, should USE <br>PASSWORD MANAGER etc
+
+    
+    Note over W: Nostr Keypair Generated <br> & Encrypted inside a <br> PRIVATE method,<br>with COMPLEX password.<br> Password variable is not <br>stored, sent or printed <br> anywhere. <br>Any sensitive variables <br>are immediately destroyed.
+    W->>D: Request account activation 
+    Note right of W: Event uses PoW and<br> encrypts PUBKEY, EMAIL,<br> and the encrypted BACKUP<br> to the dvm@sigit.io pubkey<br> using the ephemeral key
+    Note over D: Verify PoW, <br>event.created_at,<br>event.id
+    D -x DB: Check if email exists
+    Note over D: If email already exists, and <br>user.last_seen <> null then <br>send user to LOGIN.<br><br>If email exists and last_seen<br> is null, then DELETE the <br>current entry.<br><br> Otherwise#58;
+    D->>DB: Create DB entries
+    Note over DB: USER insert#58;<br>#128274;user.id=uid()<br>user.pubkey=lowcase($PUBKEY)<br>user.email=lowcase($EMAIL)<br>user.last_seen=null<br>user.created_at=now()<br>user.bkp=$BACKUP
+    Note over DB: SESSION insert#58;<br>#128274;session.pubkey="ephemeral pubkey"<br>session.email_code=INT (6 digits)<br>session.user_id=user.id<br>session.created_at=now()
+    D->>U: Send session.email_code via email
+    D->>W: Account created
+    Note left of D: Payload is the user.id and/or<br> an encrypted (and detailed)<br> error message
+    Note over W: Verify DVM pubkey, <br> event.created_at,<br>event.id
+    W->>U: Tell user to check email and<br>to open it in the <br> SAME BROWSER SESSION
+    Note over W: Screen to accept the 6 digits <br> is already displayed<br>(mobile optimised if relevant)
+    U->>W: User opens link or enters the code
+    W->>D: Verify Account
+    Note right of W: Event uses PoW and <br>encrypts both user_id <br>and email_code<br> to DVM pubkey
+    D -x DB: Check email_code where <br>session pk=event pk
+    D->>DB: If email_code matches, <br>update USER table where<br> session.user_id=user.id
+
+
+    Note over DB: USER update#58;<br>user.last_seen=now()
+    D->>W: Account activated
+    Note left of D: Payload is an empty string or<br> an encrypted (and detailed)<br> error message
+    Note over W: Verify DVM pubkey, <br> event.created_at,<br>event.id
+    W->>U: User is automatically logged in
+    Note over W: Ephemeral key is destroyed<br>Default relay list is broadcast<br> using actual user pubkey
+```
+
+