# Phase 3 - Desktop Token Security Hardening

Status: completed  
Date: 2026-04-17  
Target: `WepAppOpusApiDesktop`

## 1) Objective

Harden token handling on desktop:
1. keychain-backed secret storage
2. encrypted token profile in SQLite
3. redaction and audit-safe logging

## 2) Implemented

## 2.1 Security modules

Added:
1. `main/security/token-security.js`
2. `main/security/secret-store.js`
3. `main/security/logger.js`

Capabilities:
1. AES-256-GCM token envelope encryption (`v1`)
2. token masking and redaction helpers
3. keychain-backed master key management (`keytar`)
4. scoped logger with auto-redaction

## 2.2 Database hardening

Updated `main/database.js` to create:
1. `api_token_profiles`
2. `security_audit_logs`

Model notes:
1. `api_token_profiles.token_enc` stores encrypted envelope, not raw token
2. default profile uniqueness enforced with partial unique index
3. audit log stores redacted metadata JSON

## 2.3 Token profile service

Added `main/token-profiles.js`:
1. list/save/delete/set-default profile
2. resolve/decrypt active token for execution
3. test token connection via Graph API
4. write redacted audit events

## 2.4 IPC + Preload + UI wiring

Updated:
1. `main/ipc-handlers.js`
2. `main/preload.js`
3. `renderer/src/utils/apiClient.js`
4. `renderer/src/pages/Settings.jsx`

New IPC channels:
1. `auth:list-token-profiles`
2. `auth:save-token-profile`
3. `auth:delete-token-profile`
4. `auth:set-default-token-profile`
5. `auth:test-token-connection`

Settings page now supports:
1. create/update token profile
2. set default profile
3. delete profile
4. test token connection
5. show latest test result

## 2.5 Dependencies and tests

Added dependency:
1. `keytar`

Added tests:
1. `tests/security/token-security.test.js`

## 3) Verification

Commands executed:
1. `npm install`
2. `npm run lint`
3. `npm run test`
4. `npm run build:renderer`
5. `npm run build:win`

Result:
1. lint passed
2. tests passed
3. renderer build passed
4. windows installers built (`nsis`, `portable`)