05/07: updated markdown documents
This commit is contained in:
@@ -0,0 +1,516 @@
|
||||
# PassKeeper — Password Manager Web App & Browser Extension
|
||||
|
||||
## Project Overview
|
||||
|
||||
A full-featured password manager web app and browser extension modelled after LastPass. Users can store, organise, and autofill credentials securely with a zero-knowledge architecture.
|
||||
|
||||
---
|
||||
|
||||
## Tech Stack
|
||||
|
||||
### Development (Windows)
|
||||
|
||||
- **Backend:** Python 3.12, Flask 3.x
|
||||
- **Database:** MySQL 8.x
|
||||
- **Frontend:** Vanilla JS (Web Crypto API) + Jinja2 templates
|
||||
- **Dev server:** `python run.py`
|
||||
|
||||
### Production (Ubuntu)
|
||||
|
||||
- **Web server:** Nginx (reverse proxy, TLS termination)
|
||||
- **WSGI server:** Gunicorn
|
||||
- **Process manager:** systemd
|
||||
- **Database:** MySQL 8.x
|
||||
- **TLS:** Let's Encrypt / Certbot
|
||||
|
||||
---
|
||||
|
||||
## Architecture
|
||||
|
||||
```
|
||||
Browser Extension <──────────────────────────────────────┐
|
||||
Web App <──> Nginx ──> Gunicorn ──> Flask App │
|
||||
│ │
|
||||
MySQL DB │
|
||||
│
|
||||
REST API (JSON, HTTPS) ───────┘
|
||||
```
|
||||
|
||||
### Project File Structure
|
||||
|
||||
```
|
||||
passkeeper/
|
||||
├── app/
|
||||
│ ├── __init__.py # App factory, blueprints, CSRF exemptions, security headers
|
||||
│ ├── config.py # DevelopmentConfig / ProductionConfig
|
||||
│ ├── models/
|
||||
│ │ ├── user.py # Argon2id, TOTP encrypted, ECDH keys, recovery
|
||||
│ │ ├── vault_item.py # enc_data, iv, enc_name, iv_name
|
||||
│ │ ├── folder.py
|
||||
│ │ ├── token_blacklist.py # JWT revocation (jti + expires_at)
|
||||
│ │ ├── shared_item.py # ECDH-encrypted cross-user shares
|
||||
│ │ ├── emergency_access.py # State machine
|
||||
│ │ └── audit_log.py
|
||||
│ ├── routes/
|
||||
│ │ ├── auth.py # Register, login, MFA, logout, refresh, change-password, recovery
|
||||
│ │ ├── vault.py # CRUD + GET /export + POST /import
|
||||
│ │ ├── folders.py
|
||||
│ │ ├── sharing.py
|
||||
│ │ └── emergency.py
|
||||
│ ├── services/
|
||||
│ │ └── auth_service.py # Argon2id, JWT, blacklist, @require_jwt, TOTP encrypt/decrypt
|
||||
│ ├── static/
|
||||
│ │ ├── css/app.css # Full responsive stylesheet; collapsible group styles; tag badge styles
|
||||
│ │ └── js/
|
||||
│ │ ├── crypto.js # deriveAuthHash, deriveVaultKey, encryptItem, decryptItem,
|
||||
│ │ │ # encryptName, decryptName, generateSalt
|
||||
│ │ ├── auth.js # Login/register + TOTP MFA + VaultSession
|
||||
│ │ ├── recover.js
|
||||
│ │ ├── sharing.js # ECDH P-256
|
||||
│ │ └── vault.js # Full vault UI — see "Key Features" below
|
||||
│ └── templates/vault/
|
||||
│ └── index.html # Tags field, Auto-Lock setting, Import/Export view + sidebar
|
||||
├── extension/
|
||||
│ ├── manifest.json # MV3 (Chrome/Edge); Ctrl+Shift+L keyboard shortcut
|
||||
│ ├── manifest.firefox.json # MV2 (Firefox)
|
||||
│ ├── background.js # Chrome SW: badges, pending-save "!" badge, CLEAR_SAVE_BADGE
|
||||
│ ├── background.firefox.js # Firefox: in-memory session shim, setTimeout idle lock
|
||||
│ ├── shared/
|
||||
│ │ ├── crypto.js # PBKDF2+AES-GCM; encryptName/decryptName; extractable key
|
||||
│ │ └── browser-polyfill.js # chrome=browser alias for Firefox content scripts
|
||||
│ ├── popup/
|
||||
│ │ ├── popup.html # Tabs: All relevant / All items / Favorites / Recents
|
||||
│ │ ├── popup.css # .pk-group-* collapsible styles; .pk-tag badge; .pk-flyout menu
|
||||
│ │ └── popup.js # Vault+folder fetch; collapsible groups; Favorites tab;
|
||||
│ │ # tag display; clipboard auto-clear; CSPRNG generator;
|
||||
│ │ # save badge clear; three-dot flyout; copy-username button
|
||||
│ ├── content/
|
||||
│ │ └── content.js # _isLikelyUsernameField; _normaliseUrl; debounced input (150ms);
|
||||
│ │ # MutationObserver guard; vault_items_cs from chrome.storage.session
|
||||
│ ├── bridge/
|
||||
│ │ └── bridge.js # SSO bridge (vault domain only)
|
||||
│ └── icons/
|
||||
├── migrations/versions/
|
||||
│ ├── 71d7158dd3b9_add_audit_log_tables_fix_sharing_public_.py
|
||||
│ ├── a1b2c3d4e5f6_encrypt_totp_secret_at_rest.py
|
||||
│ ├── b2c3d4e5f6a7_add_account_recovery_columns.py
|
||||
│ └── c3d4e5f6a7b8_encrypt_vault_item_name.py # adds enc_name + iv_name
|
||||
├── scripts/
|
||||
│ ├── reencrypt_totp_secrets.py
|
||||
│ ├── backup_db.sh / backup.cron / passkeeper-logrotate
|
||||
│ ├── passkeeper-nginx.conf / passkeeper.service
|
||||
├── reset_db.py
|
||||
├── requirements.txt
|
||||
├── wsgi.py / run.py
|
||||
└── CLAUDE.md
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Database Schema (MySQL)
|
||||
|
||||
```sql
|
||||
-- Users
|
||||
CREATE TABLE users (
|
||||
id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
|
||||
email VARCHAR(255) UNIQUE NOT NULL,
|
||||
master_hash VARCHAR(255) NOT NULL, -- Argon2id(authHash)
|
||||
enc_key_salt VARCHAR(64) NOT NULL,
|
||||
created_at / last_login DATETIME,
|
||||
totp_secret VARCHAR(255), -- AES-256-GCM ciphertext
|
||||
totp_iv VARCHAR(64),
|
||||
totp_enabled TINYINT(1) DEFAULT 0,
|
||||
sharing_public_key VARCHAR(128),
|
||||
sharing_private_key_enc TEXT,
|
||||
sharing_private_key_iv VARCHAR(64),
|
||||
recovery_enc_salt VARCHAR(128),
|
||||
recovery_iv VARCHAR(64)
|
||||
);
|
||||
|
||||
-- Vault Items
|
||||
CREATE TABLE vault_items (
|
||||
id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
|
||||
user_id INT UNSIGNED NOT NULL,
|
||||
folder_id INT UNSIGNED,
|
||||
item_type VARCHAR(20) NOT NULL DEFAULT 'password',
|
||||
name VARCHAR(255) NOT NULL, -- server label only (item type string)
|
||||
enc_data TEXT NOT NULL, -- AES-256-GCM ciphertext of payload + tags
|
||||
iv VARCHAR(64) NOT NULL,
|
||||
enc_name TEXT, -- AES-256-GCM ciphertext of item name (nullable)
|
||||
iv_name VARCHAR(64),
|
||||
created_at DATETIME DEFAULT NOW(),
|
||||
updated_at DATETIME DEFAULT NOW() ON UPDATE NOW(),
|
||||
FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
|
||||
FOREIGN KEY (folder_id) REFERENCES folders(id) ON DELETE SET NULL
|
||||
);
|
||||
-- (folders, token_blacklist, shared_items, emergency_access, audit_logs — unchanged)
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Migration History
|
||||
|
||||
| Revision | Description |
|
||||
| -------------- | ------------------------------------------- |
|
||||
| `71d7158dd3b9` | Add audit_logs; fix sharing_public_key type |
|
||||
| `a1b2c3d4e5f6` | Encrypt TOTP secret at rest |
|
||||
| `b2c3d4e5f6a7` | Add account recovery columns |
|
||||
| `c3d4e5f6a7b8` | Add enc_name + iv_name to vault_items |
|
||||
|
||||
---
|
||||
|
||||
## Security Model
|
||||
|
||||
- **Zero-knowledge:** master password never sent to server
|
||||
- `authHash = PBKDF2(masterPassword, email, 100k iter)` → auth only
|
||||
- `vaultKey = PBKDF2(masterPassword, enc_key_salt, 600k iter)` → browser memory only
|
||||
- All vault data (payload + name + tags + advanced settings) encrypted client-side (AES-256-GCM)
|
||||
- **Item name:** `enc_name`/`iv_name`; server `name` column = item type only
|
||||
- **Tags:** `plain.tags: string[]` inside `enc_data`; server never sees them
|
||||
- **Advanced Settings:** `plain.autofill`, `plain.autologin`, `plain.reprompt` — boolean fields inside `enc_data`; zero-knowledge like tags
|
||||
- **Argon2id:** double-hashes `authHash` server-side
|
||||
- **JWT:** HS256, 15 min access / 7 day refresh, JTI blacklisted on logout
|
||||
- **MFA:** TOTP secret AES-256-GCM encrypted at rest
|
||||
- **Sharing:** ECDH P-256 zero-knowledge re-encryption
|
||||
- **Password generator:** fully CSPRNG (`_cryptoRandInt` rejection-sampling)
|
||||
- **Decrypted vault data:** `chrome.storage.session` only — never to disk
|
||||
- **Clipboard auto-clear:** 30 s after any password/username copy (web + extension)
|
||||
- **Breach detection:** HIBP k-anonymity — only 5-char SHA-1 prefix transmitted
|
||||
|
||||
---
|
||||
|
||||
## Extension Storage Architecture
|
||||
|
||||
| Data | Storage | Reason |
|
||||
| -------------------------------------------------------------------------------------- | ----------------------------------- | ------------------------------------- |
|
||||
| `access_token`, `vault_key_jwk`, `vault_items`, `vault_items_cs` | `chrome.storage.session` | Memory-only, cleared on browser close |
|
||||
| `refresh_token`, `enc_key_salt`, `pending_save`, `save_blocklist`, `idle_lock_seconds` | `chrome.storage.local` | Persists across restarts |
|
||||
| Web-app session timeout | `localStorage` (`web_idle_minutes`) | Per-browser preference |
|
||||
|
||||
### Critical: `vault_items_cs` is in `session`, NOT `local`
|
||||
|
||||
Requires Chrome 111+. `content.js` `onChanged` listener watches `area === 'session'`. Do not revert — reverting persists decrypted passwords to disk.
|
||||
|
||||
### Pending-save badge
|
||||
|
||||
`background.js` sets a red `"!"` badge on `SAVE_CREDENTIALS`. Cleared via `CLEAR_SAVE_BADGE` when user acts on the save prompt in the popup.
|
||||
|
||||
---
|
||||
|
||||
## Key Implementation Details
|
||||
|
||||
### Vault item tags
|
||||
|
||||
- Stored as `plain.tags: string[]` inside `enc_data`. No schema change ever needed.
|
||||
- **Web app:** `_parseTags(str)` → comma-split, lowercase, dedup, sort. `_allTags()` collects across all items. `renderTagList()` builds sidebar. Tags field in modal has live badge preview.
|
||||
- **Extension:** `.pk-tag` badges below item subtitle. Favorites tab = items where `tags.includes('favorite')`. Favorited items show gold ★ in site label.
|
||||
- To favourite an item: add tag `favorite` in the web app edit modal.
|
||||
|
||||
### Collapsible folder groups
|
||||
|
||||
- **Web app:** `_collapsedGroups` Set persists state across re-renders. Header shows name + count badge + chevron (▼/▶). Click toggles and re-renders.
|
||||
- **Extension:** only on "All items" tab. `_folders` fetched in parallel with vault. `_collapsedFolders` Set. `folderName(id)` resolves to display name with `(none)` fallback.
|
||||
|
||||
### Import / Export
|
||||
|
||||
- **Encrypted JSON export:** `GET /api/vault` → versioned envelope → download. Zero-knowledge.
|
||||
- **CSV export:** decrypt client-side → `name, url, username, password, notes`.
|
||||
- **JSON import:** sends encrypted blobs to `POST /api/vault/import` directly.
|
||||
- **CSV import:** parses Chrome / Bitwarden / 1Password formats; encrypts client-side before POSTing.
|
||||
- Both endpoints write audit logs: `vault_item.export`, `vault_item.import`.
|
||||
|
||||
### Web-app session timeout
|
||||
|
||||
- `_startWebIdleTracking()` called at end of `init()`. Listens to `mousemove`, `mousedown`, `keydown`, `touchstart`, `scroll`.
|
||||
- On timeout: `VaultSession.clear()` → unlock overlay → toast.
|
||||
- Stored in `localStorage` as `web_idle_minutes`. Default 15 min. Options: Never/5/10/15/30/60.
|
||||
- Exposed in Account Settings → Auto-Lock (`<select id="web-idle-select">`).
|
||||
|
||||
### Browser history / back-button
|
||||
|
||||
- `switchView(view, { pushState = true })` calls `history.pushState({ view }, '', '#view-name')`.
|
||||
- `popstate` listener in `init()` restores view. Direct hash links (`/vault#security`) work.
|
||||
- `Vault.switchToImportExport()` exposed on public return object for sidebar `<li onclick>` fallback.
|
||||
|
||||
### Clipboard auto-clear
|
||||
|
||||
- Web app: `copyToClipboard()` uses `_clipboardClearTimer` setTimeout 30s → `writeText('')`.
|
||||
- Extension: `_copyWithAutoClear()` same pattern. Applied to password, username, and flyout copies.
|
||||
|
||||
### Missing 2FA warning
|
||||
|
||||
- Security dashboard "No 2FA Saved" section: password items with URL but no `totp_uri`.
|
||||
- Uses existing `extractTotpSecret()` and `makeSection()`.
|
||||
|
||||
### Security score age penalty fix
|
||||
|
||||
- `old` only includes items that are **also weak or reused** (`weakOrReusedIds.has(i.id)`).
|
||||
- Strong unique unchanged passwords no longer penalised.
|
||||
|
||||
### Keyboard shortcut
|
||||
|
||||
- `manifest.json`: `commands._execute_action`, `Ctrl+Shift+L` / `Cmd+Shift+L`.
|
||||
- `manifest.firefox.json`: `_execute_browser_action`.
|
||||
- Customisable at `chrome://extensions/shortcuts`.
|
||||
|
||||
### Firefox compatibility
|
||||
|
||||
| File | Purpose |
|
||||
| ---------------------------- | ------------------------------------------------------------------- |
|
||||
| `manifest.firefox.json` | MV2: `browser_action`, `background.scripts` |
|
||||
| `background.firefox.js` | In-memory session shim, `setTimeout` idle lock, `browserAction` API |
|
||||
| `shared/browser-polyfill.js` | `chrome = browser` alias for content scripts |
|
||||
|
||||
Load in Firefox: `about:debugging` → This Firefox → Load Temporary Add-on → `manifest.firefox.json`.
|
||||
|
||||
### `_normaliseUrl()` — bare-domain matching
|
||||
|
||||
```js
|
||||
function _normaliseUrl(raw) {
|
||||
if (!raw) return null;
|
||||
const s = raw.trim();
|
||||
if (/^https?:\/\//i.test(s)) return s;
|
||||
if (s.startsWith("//")) return "https:" + s;
|
||||
return "https://" + s;
|
||||
}
|
||||
```
|
||||
|
||||
In both `content.js` and `popup.js`. Prevents silent match failures for bare domains.
|
||||
|
||||
### `_isLikelyUsernameField()` — credential field heuristic
|
||||
|
||||
1. **YES:** `autocomplete="username|email|tel"`
|
||||
2. **NO:** non-credential autocomplete (`name`, `organization`, `search`, etc.)
|
||||
3. **YES:** `name/id/placeholder/aria-label` matches `user|email|mail|login|phone|tel|mobile|account`
|
||||
4. **Otherwise:** not decorated
|
||||
|
||||
### MutationObserver guard
|
||||
|
||||
Inspects added/removed nodes — if all carry `__pk` prefix, returns early. Prevents re-decoration loops when the extension injects/removes its own UI.
|
||||
|
||||
### `showDropdown` debounced 150ms on `input`
|
||||
|
||||
`_debounce(fn, ms)` helper. `focus` listener remains instant.
|
||||
|
||||
### Three-dot flyout menu
|
||||
|
||||
`.pk-flyout` is rendered with `position: fixed`, appended to `#app` (not inside the button).
|
||||
Coordinates are computed from `btn.getBoundingClientRect()` so it escapes `.vault-list`
|
||||
`overflow-y: auto` clipping. Auto-flips upward when `spaceBelow < flyoutH + 8` — items near
|
||||
the bottom of the list show the menu above the button, clearing the bottom nav bar.
|
||||
Dynamic items: Open URL / Copy username / Copy password. Closes on outside click.
|
||||
|
||||
### Advanced Settings (password items)
|
||||
|
||||
Three boolean flags stored inside `enc_data` as part of `plain` — zero-knowledge, same
|
||||
pattern as `plain.tags`. No database schema change required.
|
||||
|
||||
| Field | Default | Behaviour |
|
||||
| ------|---------|---------- |
|
||||
| `plain.autofill` | `true` | Whether the extension shows the fill button and fills this item |
|
||||
| `plain.autologin` | `false` | After filling, automatically submit the form (`submitBtn.click()` with 400 ms delay) |
|
||||
| `plain.reprompt` | `false` | Require master password before filling, copying, or editing |
|
||||
|
||||
**Web app (`vault.js` / `index.html`):**
|
||||
- Collapsible `#adv-settings-toggle` / `#adv-settings-body` section in the password type-fields block.
|
||||
- Starts **collapsed** (`hidden`) every time the modal opens (`openModal` resets state).
|
||||
- `buildPlainData('password')` collects the three checkbox values.
|
||||
- `openModal` edit-mode populates checkboxes from `plain.*`; `autofill` defaults `true` via HTML `checked` attribute — reset by `form.reset()`.
|
||||
- CSS: `.adv-section`, `.adv-section-header`, `.adv-section-body`, `.adv-checkbox-row`, `.adv-checkbox-label`, `.adv-checkbox-desc` in `app.css`.
|
||||
|
||||
**Extension (`popup.js`):**
|
||||
- `canFill` gates on `plain.autofill !== false` — hides the fill button for items with autofill disabled.
|
||||
- Copy-password, copy-username, autofill button, and flyout copy actions all check `plain.reprompt`.
|
||||
- `_repromptMasterPassword()`: full-screen overlay inside `#app`; derives vault key from entered password + `enc_key_salt`; compares JWK bytes to stored `vault_key_jwk`.
|
||||
- Autofill message sends `autologin: !!plain.autologin` to the content script.
|
||||
|
||||
**Extension (`content.js`):**
|
||||
- `doAutofill(username, password, autologin)` — when `autologin` is `true`, finds the closest form's submit button and clicks it (or calls `form.submit()`) after a 400 ms delay to let React/Vue input handlers fire.
|
||||
- `DO_AUTOFILL` message handler forwards `!!msg.autologin`.
|
||||
|
||||
### AuditLog pattern
|
||||
|
||||
```python
|
||||
db.session.add(item)
|
||||
db.session.flush() # populates item.id
|
||||
AuditLog.log(user_id=..., action='vault_item.create', resource_id=item.id, ...)
|
||||
db.session.commit() # atomic
|
||||
```
|
||||
|
||||
For deletes: capture `id` and `name` before flush.
|
||||
|
||||
### Common gotchas
|
||||
|
||||
- `item_type`: use `db.String(20)`, not `db.Enum(ItemType)` — enum lazy-load breaks `.value`
|
||||
- `INTEGER(unsigned=True)`: requires `from sqlalchemy.dialects.mysql import INTEGER`
|
||||
- All datetimes: naive UTC `datetime.utcnow()` — never mix with timezone-aware
|
||||
- Extension vault key: `extractable: true` (web app uses `false`)
|
||||
- PyJWT `sub`: `str(user_id)` on encode, `int(payload['sub'])` on decode
|
||||
- TOTP key generation: `python -c "import secrets; print(secrets.token_hex(32))"`
|
||||
- `#vault-list` ID must not be renamed — `vault.js` renders into it directly
|
||||
|
||||
---
|
||||
|
||||
## Audit Action Catalog
|
||||
|
||||
| Module | Action | Trigger |
|
||||
| -------------- | ------------------------------------------------------ | ------------------------ |
|
||||
| `auth.py` | `auth.register` | New account |
|
||||
| `auth.py` | `auth.login` / `auth.login_failed` | Login success/fail |
|
||||
| `auth.py` | `auth.mfa_enable/disable/verify` | TOTP actions |
|
||||
| `auth.py` | `auth.change_password` / `auth.change_password_failed` | Password change |
|
||||
| `auth.py` | `auth.delete_account` / `auth.delete_account_failed` | Deletion |
|
||||
| `auth.py` | `auth.recovery_setup/failed/items_denied/success` | Recovery |
|
||||
| `vault.py` | `vault_item.create/update/delete` | CRUD |
|
||||
| `vault.py` | `vault_item.export` / `vault_item.import` | Import/Export |
|
||||
| `folders.py` | `folder.create/update/delete` | Folder CRUD |
|
||||
| `sharing.py` | `sharing_keys.create/update` | ECDH key setup |
|
||||
| `sharing.py` | `shared_item.create/delete/accept` | Sharing |
|
||||
| `emergency.py` | `emergency_access.*` | All EA state transitions |
|
||||
|
||||
---
|
||||
|
||||
## REST API
|
||||
|
||||
```
|
||||
POST /api/auth/register|login|logout|refresh|recover
|
||||
GET /api/auth/me|mfa/status|mfa/setup|recovery/status|recovery/data|recovery/items
|
||||
POST /api/auth/mfa/enable|disable|verify|change-password|recovery/setup
|
||||
DELETE /api/auth/account
|
||||
|
||||
GET /api/vault # list all encrypted items
|
||||
POST /api/vault # { name, item_type, folder_id, enc_data, iv, enc_name?, iv_name? }
|
||||
GET /api/vault/<id>
|
||||
PUT /api/vault/<id>
|
||||
DELETE /api/vault/<id>
|
||||
GET /api/vault/export # returns encrypted item array
|
||||
POST /api/vault/import # accepts array; returns { imported, skipped }
|
||||
|
||||
GET|POST /api/folders
|
||||
PUT|DELETE /api/folders/<id>
|
||||
|
||||
GET|POST /api/sharing/keys
|
||||
GET /api/sharing/public-key
|
||||
GET|POST /api/sharing
|
||||
DELETE /api/sharing/<id>
|
||||
GET /api/sharing/inbox
|
||||
POST /api/sharing/inbox/<id>/accept
|
||||
|
||||
GET|POST /api/emergency
|
||||
DELETE /api/emergency/<id>
|
||||
POST /api/emergency/<id>/accept|provide|request|deny
|
||||
GET /api/emergency/<id>/vault
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Development Setup
|
||||
|
||||
```bash
|
||||
python -m venv .venv && .venv\Scripts\activate
|
||||
pip install -r requirements.txt
|
||||
# .env: MYSQL_*, SECRET_KEY, JWT_SECRET_KEY, TOTP_ENCRYPTION_KEY
|
||||
mysql -u root -p -e "CREATE DATABASE passkeeper CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"
|
||||
python reset_db.py
|
||||
python run.py
|
||||
```
|
||||
|
||||
## Production Deployment
|
||||
|
||||
```bash
|
||||
flask db upgrade
|
||||
sudo systemctl reload passkeeper
|
||||
```
|
||||
|
||||
## Python Dependencies
|
||||
|
||||
```
|
||||
flask>=3.0 flask-sqlalchemy>=3.1 flask-migrate>=4.0 flask-login>=0.6
|
||||
flask-wtf>=1.2 flask-limiter>=3.5 flask-cors>=4.0
|
||||
pymysql>=1.1 argon2-cffi>=23.1 pyjwt>=2.8 python-dotenv>=1.0
|
||||
gunicorn>=21.0 pyotp>=2.9.0 qrcode[pil]>=7.4.2
|
||||
cryptography>=42.0 # TOTP secret encryption
|
||||
redis>=5.0 # Rate-limit storage (required in production)
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Notes
|
||||
|
||||
- Never log decrypted vault data server-side
|
||||
- Tags live in `enc_data` as `plain.tags: string[]` — no schema change ever needed
|
||||
- `vault_items_cs` is in `chrome.storage.session` — decrypted data never written to disk
|
||||
- HIBP checks run progressively — synchronous sections render first, then parallel async checks
|
||||
- Clipboard cleared 30 s after every password/username copy (web app + extension)
|
||||
- Web-app idle timeout in `localStorage` (`web_idle_minutes`); default 15 min
|
||||
- Browser back/forward works for all five vault views via `history.pushState`
|
||||
- Pending save badge (`"!"`) set on `SAVE_CREDENTIALS`, cleared via `CLEAR_SAVE_BADGE`
|
||||
- Firefox: use `manifest.firefox.json` + `background.firefox.js` + `browser-polyfill.js`
|
||||
- Redis required in production for rate limiting
|
||||
- Recovery code never stored server-side; password change clears it (user must regenerate)
|
||||
- `save_blocklist` in `chrome.storage.local` suppresses save banner per hostname
|
||||
|
||||
---
|
||||
|
||||
## CSP & Nginx Header Architecture
|
||||
|
||||
### Why Nginx — not Flask — owns the authoritative CSP
|
||||
|
||||
The deployment stack is `Browser → Nginx → Gunicorn → Flask`. When Nginx emits a
|
||||
`Content-Security-Policy` header with `always`, it **replaces** any CSP header
|
||||
Flask emits upstream. Changes to `app/__init__.py` or `base.html` alone are
|
||||
ineffective in production — **`scripts/passkeeper-nginx.conf` is the single source
|
||||
of truth for CSP in production.**
|
||||
|
||||
### Nginx `add_header` inheritance rule (critical)
|
||||
|
||||
> Any `location` block that declares even one `add_header` directive silently drops
|
||||
> **all** `add_header` directives from every parent block for that location.
|
||||
|
||||
The `/static/` block uses `add_header Cache-Control`. Without explicitly repeating
|
||||
all security headers inside that block, every static asset (`vault.js`, `app.css`,
|
||||
etc.) is served with **no** CSP, no HSTS, no `X-Frame-Options` — none.
|
||||
|
||||
**All security headers must be present in both the `server` block and the
|
||||
`/static/` location block.** Keep them in sync whenever either is modified.
|
||||
|
||||
### Approved external `connect-src` origins
|
||||
|
||||
| Origin | Purpose |
|
||||
| -------------------------------- | -------------------------------------------------- |
|
||||
| `https://api.pwnedpasswords.com` | HIBP k-anonymity breach check (Security Dashboard) |
|
||||
|
||||
`connect-src 'self' https://api.pwnedpasswords.com` must appear in the CSP in
|
||||
**both** the `server` block and the `/static/` location block in
|
||||
`passkeeper-nginx.conf`.
|
||||
|
||||
### Flask-side CSP (`app/__init__.py` + `base.html`)
|
||||
|
||||
Flask also sets a CSP header and `base.html` has a `<meta http-equiv>` CSP tag.
|
||||
Keep these in sync with the Nginx config for correctness in development (where
|
||||
Nginx is not present). Note:
|
||||
|
||||
- `frame-ancestors` is valid **only** in HTTP headers — never in `<meta>` CSP tags.
|
||||
The browser silently ignores it in meta tags and logs a warning.
|
||||
- The `<meta>` tag CSP does not enforce `frame-ancestors`; the Nginx HTTP header does.
|
||||
|
||||
### Inline event handler prohibition
|
||||
|
||||
`script-src 'self'` blocks all inline `on*` HTML attributes. Do not add `onclick`,
|
||||
`onchange`, or any other inline handler to any template. Wire all interactions via
|
||||
`addEventListener` in the corresponding JS file instead.
|
||||
|
||||
The `Vault.switchToImportExport()` export on the `vault.js` public API exists for
|
||||
historical reasons. The `#sidebar-import-export` element is wired via
|
||||
`addEventListener` in `init()` — the exported function is not needed for new code.
|
||||
|
||||
### Third-party browser extension noise
|
||||
|
||||
Console errors referencing `isCheckout`, `content-script.js`, or the extension ID
|
||||
`clmkdohmabikagpnhjmgacbclihgmdje` originate from a third-party shopping/coupon
|
||||
browser extension — not from PassKeeper. These can be ignored.
|
||||
|
||||
The `[PassKeeper] decorateFields: host=…, matched=0 of 0 items` log from
|
||||
`content.js` is a routine debug message (not an error): the content script found
|
||||
no stored credentials matching the current hostname, which is expected on the vault
|
||||
page itself.
|
||||
Reference in New Issue
Block a user