verifyCanary, DEK safeguards

.env

@@ -2,4 +2,7 @@ CORS_ALLOWED_ORIGINS=https://dev1.aptivaai.com,http://34.16.120.118:3000,http://
 SERVER1_PORT=5000
 SERVER2_PORT=5001
 SERVER3_PORT=5002
-IMG_TAG=16e01ab-202508071457
+IMG_TAG=1d50efe-202508081233
+
+ENV_NAME=dev
+PROJECT=aptivaai-dev

.woodpecker.yml

@@ -34,6 +34,7 @@ steps:
             'set -euo pipefail; \
              PROJECT=aptivaai-dev; \
              ENV=staging; \
+             ENV_NAME=staging; \
              IMG_TAG=$(gcloud secrets versions access latest --secret=IMG_TAG --project=$PROJECT); \
              export IMG_TAG; \
              JWT_SECRET=$(gcloud secrets versions access latest --secret=JWT_SECRET_$ENV --project=$PROJECT); \
@@ -87,9 +88,9 @@ steps:
 
              export FROM_SECRETS_MANAGER=true; \
              cd /home/jcoakley/aptiva-staging-app; \
-             sudo --preserve-env=IMG_TAG,FROM_SECRETS_MANAGER,JWT_SECRET,OPENAI_API_KEY,ONET_USERNAME,ONET_PASSWORD,STRIPE_SECRET_KEY,STRIPE_PUBLISHABLE_KEY,STRIPE_WH_SECRET,STRIPE_PRICE_PREMIUM_MONTH,STRIPE_PRICE_PREMIUM_YEAR,STRIPE_PRICE_PRO_MONTH,STRIPE_PRICE_PRO_YEAR,DB_NAME,DB_HOST,DB_PORT,DB_USER,DB_PASSWORD,DB_SSL_CA,DB_SSL_CERT,DB_SSL_KEY,TWILIO_ACCOUNT_SID,TWILIO_AUTH_TOKEN,TWILIO_MESSAGING_SERVICE_SID,KMS_KEY_NAME,DEK_PATH \
+             sudo --preserve-env=IMG_TAG,FROM_SECRETS_MANAGER,JWT_SECRET,OPENAI_API_KEY,ONET_USERNAME,ONET_PASSWORD,STRIPE_SECRET_KEY,STRIPE_PUBLISHABLE_KEY,STRIPE_WH_SECRET,STRIPE_PRICE_PREMIUM_MONTH,STRIPE_PRICE_PREMIUM_YEAR,STRIPE_PRICE_PRO_MONTH,STRIPE_PRICE_PRO_YEAR,DB_NAME,DB_HOST,DB_PORT,DB_USER,DB_PASSWORD,DB_SSL_CA,DB_SSL_CERT,DB_SSL_KEY,TWILIO_ACCOUNT_SID,TWILIO_AUTH_TOKEN,TWILIO_MESSAGING_SERVICE_SID,KMS_KEY_NAME,DEK_PATH,ENV,ENV_NAME,PROJECT \ \
                docker compose pull; \
-             sudo --preserve-env=IMG_TAG,FROM_SECRETS_MANAGER,JWT_SECRET,OPENAI_API_KEY,ONET_USERNAME,ONET_PASSWORD,STRIPE_SECRET_KEY,STRIPE_PUBLISHABLE_KEY,STRIPE_WH_SECRET,STRIPE_PRICE_PREMIUM_MONTH,STRIPE_PRICE_PREMIUM_YEAR,STRIPE_PRICE_PRO_MONTH,STRIPE_PRICE_PRO_YEAR,DB_NAME,DB_HOST,DB_PORT,DB_USER,DB_PASSWORD,DB_SSL_CA,DB_SSL_CERT,DB_SSL_KEY,TWILIO_ACCOUNT_SID,TWILIO_AUTH_TOKEN,TWILIO_MESSAGING_SERVICE_SID,KMS_KEY_NAME,DEK_PATH \
+             sudo --preserve-env=IMG_TAG,FROM_SECRETS_MANAGER,JWT_SECRET,OPENAI_API_KEY,ONET_USERNAME,ONET_PASSWORD,STRIPE_SECRET_KEY,STRIPE_PUBLISHABLE_KEY,STRIPE_WH_SECRET,STRIPE_PRICE_PREMIUM_MONTH,STRIPE_PRICE_PREMIUM_YEAR,STRIPE_PRICE_PRO_MONTH,STRIPE_PRICE_PRO_YEAR,DB_NAME,DB_HOST,DB_PORT,DB_USER,DB_PASSWORD,DB_SSL_CA,DB_SSL_CERT,DB_SSL_KEY,TWILIO_ACCOUNT_SID,TWILIO_AUTH_TOKEN,TWILIO_MESSAGING_SERVICE_SID,KMS_KEY_NAME,DEK_PATH,ENV,ENV_NAME,PROJECT \ \
                docker compose up -d --force-recreate --remove-orphans; \
              echo "✅ Staging stack refreshed with tag $IMG_TAG"'
             
@@ -97,6 +98,15 @@ steps:
   - STAGING_SSH_KEY
   - STAGING_KNOWN_HOSTS
 
+  - name: security-scan
+    image: aquasec/trivy:0.52
+    commands:
+      - |
+        REG=us-central1-docker.pkg.dev/aptivaai-dev/aptiva-repo
+        trivy image --exit-code 1 --severity CRITICAL $REG/server1:$IMG_TAG
+        trivy image --exit-code 1 --severity CRITICAL $REG/server2:$IMG_TAG
+        trivy image --exit-code 1 --severity CRITICAL $REG/server3:$IMG_TAG
+        trivy image --exit-code 1 --severity CRITICAL $REG/nginx:$IMG_TAG
+
 when:
-  event:
+  event: [push]
-    - push

Dockerfile.server1

@@ -1,4 +1,7 @@
 FROM node:20-bullseye AS base     
+
+RUN groupadd -r app && useradd -r -g app app
+
 WORKDIR /app
 
 # ---- native build deps ----
@@ -13,4 +16,8 @@ COPY public/ /app/public/
 RUN npm ci --unsafe-perm        
 COPY . .
 
+RUN mkdir -p /run/secrets && chown -R app:app /run/secrets
+
+USER app
+
 CMD ["node", "backend/server1.js"]

Dockerfile.server2

@@ -1,4 +1,7 @@
 FROM node:20-bullseye AS base     
+
+RUN groupadd -r app && useradd -r -g app app
+
 WORKDIR /app
 
 # ---- native build deps ----
@@ -13,4 +16,7 @@ COPY public/ /app/public/
 RUN npm ci --unsafe-perm        
 COPY . .
 
+RUN mkdir -p /run/secrets && chown -R app:app /run/secrets
+
+USER app
 CMD ["node", "backend/server2.js"]

Dockerfile.server3

@@ -1,20 +1,23 @@
-# ---- Dockerfile.server3 (fixed) ------------------------------
+FROM node:20-bullseye AS base     
-FROM node:20-bullseye            
+
+RUN groupadd -r app && useradd -r -g app app
+
 WORKDIR /app
 
-# 1. native build dependencies + curl
+# ---- native build deps ----
 RUN apt-get update -y && \
     apt-get install -y --no-install-recommends \
-        build-essential python3 pkg-config curl && \
+         build-essential python3 pkg-config && \
     rm -rf /var/lib/apt/lists/*
+# ---------------------------
 
-# 2. node deps
 COPY package*.json ./
-RUN npm ci --omit=dev --unsafe-perm
-
-# 3. static assets & source
 COPY public/ /app/public/  
+RUN npm ci --unsafe-perm        
 COPY . .
 
+RUN mkdir -p /run/secrets && chown -R app:app /run/secrets
+
+USER app
 CMD ["node", "backend/server3.js"]
 

backend/server1.js

@@ -1,61 +1,88 @@
 import express from 'express';
-import axios from 'axios';
 import cors from 'cors';
 import helmet from 'helmet';
 import dotenv from 'dotenv';
 import { fileURLToPath } from 'url';
-import fs from 'fs';
 import path from 'path';
 import bodyParser from 'body-parser';
 import bcrypt from 'bcrypt';
 import jwt from 'jsonwebtoken'; // For token-based authentication
-import { initEncryption } from './shared/crypto/encryption.js';
+import { initEncryption, encrypt, decrypt, verifyCanary, SENTINEL } from './shared/crypto/encryption.js';
 
 import pool from './config/mysqlPool.js'; // adjust path if needed
 
 import sqlite3 from 'sqlite3';
 
+
+const CANARY_SQL = `
+  CREATE TABLE IF NOT EXISTS encryption_canary (
+    id    TINYINT  NOT NULL PRIMARY KEY,
+    value TEXT     NOT NULL
+  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;`;
+
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
 const rootPath = path.resolve(__dirname, '..'); // Up one level
 const env          = process.env.NODE_ENV?.trim() || 'development';
-const stage = env === 'staging' ? 'development' : env;
 const envPath = path.resolve(rootPath, `.env.${env}`);
 dotenv.config({ path: envPath }); // Load .env file
 
 // Grab secrets and config from ENV
-const JWT_SECRET = process.env.JWT_SECRET;
+const {
-const DB_HOST = process.env.DB_HOST || '127.0.0.1';
+  JWT_SECRET,
-const DB_PORT = process.env.DB_PORT ? parseInt(process.env.DB_PORT) : 3306;
+  CORS_ALLOWED_ORIGINS,
-const DB_USER = process.env.DB_USER || 'sqluser';
+  SERVER1_PORT = 5000
-const DB_PASSWORD = process.env.DB_PASSWORD || '';
+} = process.env;
-const DB_NAME = process.env.DB_NAME || 'user_profile_db';
 
 if (!JWT_SECRET) {
   console.error('FATAL: JWT_SECRET missing – aborting startup');
   process.exit(1);          // container exits, Docker marks it unhealthy
 }
 
-await initEncryption();
+if (!CORS_ALLOWED_ORIGINS) {
-// Test a quick query (optional)
+  console.error('FATAL: CORS_ALLOWED_ORIGINS missing – aborting startup');
-try {
-  const [rows] = await pool.query('SELECT 1');
-  console.log('Connected to MySQL user_profile_db');
-} catch (err) {
-  console.error('Error connecting to MySQL user_profile_db:', err.message);
-}
-
-
-const app = express();
-const PORT = process.env.SERVER1_PORT || 5000;
-
-/* ─── Require critical env vars ───────────────────────────────── */
-if (!process.env.CORS_ALLOWED_ORIGINS) {
-  console.error('FATAL  CORS_ALLOWED_ORIGINS is not set'); // eslint-disable-line
   process.exit(1);
 }
 
+/* ─── unwrap / verify DEK before we serve requests ────────────── */
+await initEncryption();
+
+try {
+  /* quick connectivity smoke‑test (optional) */
+  await pool.query('SELECT 1');
+
+  /* ① ensure table exists */
+  await pool.query(CANARY_SQL);
+
+  /* ② insert sentinel on first run */
+  await pool.query(
+    'INSERT IGNORE INTO encryption_canary (id, value) VALUES (1, ?)',
+    [encrypt(SENTINEL)]
+  );
+
+  /* ③ read back & verify */
+  const [rows] = await pool.query(
+    'SELECT value FROM encryption_canary WHERE id = 1 LIMIT 1'
+  );
+
+  const plaintext = decrypt(rows[0]?.value || '');
+  if (plaintext !== SENTINEL) {
+    throw new Error('DEK mismatch with database sentinel');
+  }
+
+  console.log('[ENCRYPT] DEK verified against canary – proceeding');
+} catch (err) {
+  console.error('FATAL:', err.message || err);
+  process.exit(1);                         // container restarts → alert
+}
+
+/* ────────────────────────────────────────────────────────────────
+   Express app & middleware
+   ---------------------------------------------------------------- */
+const app = express();
+const PORT = process.env.SERVER1_PORT || 5000;
+
 /* ─── Allowed origins for CORS (comma-separated in env) ──────── */
 const allowedOrigins = process.env.CORS_ALLOWED_ORIGINS
   .split(',')
@@ -73,7 +100,15 @@ app.use(
   })
 );
 
-app.get('/healthz', (req, res) => res.sendStatus(204));   // 204 No Content
+app.get('/healthz', async (req, res) => {
+  try {
+    await verifyCanary(pool);           // throws if bad
+    return res.type('text').send('OK'); // cheap 200 OK
+  } catch (e) {
+    console.error('[HEALTHZ]', e.message);
+    return res.status(500).type('text').send('FAIL');
+  }
+});
 
 // Enable CORS with dynamic origin checking
 app.use(

backend/server2.js

@@ -12,6 +12,7 @@ import path from 'path';
 import { fileURLToPath } from 'url';
 import { open } from 'sqlite';
 import sqlite3 from 'sqlite3';
+import pool from './config/mysqlPool.js'; // adjust path if needed
 import fs from 'fs';
 import readline from 'readline';
 import chatFreeEndpoint from "./utils/chatFreeEndpoint.js";
@@ -19,7 +20,8 @@ import { OpenAI }      from 'openai';
 import rateLimit       from 'express-rate-limit';
 import authenticateUser from './utils/authenticateUser.js';
 import { vectorSearch }  from "./utils/vectorSearch.js";
-import { initEncryption } from './shared/crypto/encryption.js';
+import { initEncryption, verifyCanary } from './shared/crypto/encryption.js';
+
 
 
 // --- Basic file init ---
@@ -58,13 +60,23 @@ const chatLimiter = rateLimit({
 const institutionData = JSON.parse(fs.readFileSync(INSTITUTION_DATA_PATH, 'utf8'));
 
 await initEncryption();
+await pool.query('SELECT 1');
+await verifyCanary(pool);
 
 // Create Express app
 const app = express();
 const PORT = process.env.SERVER2_PORT || 5001;
 
 // at top of backend/server.js  (do once per server codebase)
-app.get('/healthz', (req, res) => res.sendStatus(204));   // 204 No Content
+app.get('/healthz', async (req, res) => {
+  try {
+    await verifyCanary(pool);          // << just pass the pool
+    return res.type('text').send('OK');
+  } catch (e) {
+    console.error('[HEALTHZ]', e.message);
+    return res.status(500).type('text').send('FAIL');
+  }
+});
 
 /**************************************************
  * DB connections

backend/server3.js

@@ -15,17 +15,20 @@ import mammoth from 'mammoth';
 import jwt from 'jsonwebtoken';
 import { v4 as uuidv4 } from 'uuid';
 import pkg from 'pdfjs-dist';
-import db from './config/mysqlPool.js';
+import pool from './config/mysqlPool.js'; // adjust path if needed
 
 import OpenAI from 'openai';
 import Fuse from 'fuse.js';
 import Stripe from 'stripe';
 import { createReminder } from './utils/smsService.js';
 
-import { initEncryption } from './shared/crypto/encryption.js';
+import { initEncryption, verifyCanary } from './shared/crypto/encryption.js';
 import { hashForLookup } from './shared/crypto/encryption.js';
 
 await initEncryption();
+await pool.query('SELECT 1');
+await verifyCanary(pool);
+
 import './jobs/reminderCron.js';
 import { cacheSummary } from "./utils/ctxCache.js";
 
@@ -69,7 +72,15 @@ const stripe = new Stripe(process.env.STRIPE_SECRET_KEY, {
 });
 
 // at top of backend/server.js  (do once per server codebase)
-app.get('/healthz', (req, res) => res.sendStatus(204));   // 204 No Content
+app.get('/healthz', async (req, res) => {
+  try {
+    await verifyCanary(pool);          // << just pass the pool
+    return res.type('text').send('OK');
+  } catch (e) {
+    console.error('[HEALTHZ]', e.message);
+    return res.status(500).type('text').send('FAIL');
+  }
+});
 
 function internalFetch(req, urlPath, opts = {}) {
   return fetch(`${API_BASE}${urlPath}`, {
@@ -256,9 +267,6 @@ const authenticatePremiumUser = (req, res, next) => {
   }
 };
 
-const pool = db;
-
-
 /** ------------------------------------------------------------------
  *  Returns the user’s stripe_customer_id (or null) given req.id.
  *  Creates a new Stripe Customer & saves it if missing.

backend/shared/crypto/encryption.js

@@ -1,42 +1,67 @@
 /* ────────────────────────────────────────────────────────────────
    AES‑GCM field‑level encryption helper backed by Google Cloud KMS
    ---------------------------------------------------------------- */
-
 import {
-  randomBytes,
+  randomBytes, createCipheriv, createDecipheriv,
-  createCipheriv,
+  createHmac, createHash,
-  createDecipheriv,
-  createHmac
 } from 'crypto';
 import { KeyManagementServiceClient }   from '@google-cloud/kms';
-import { open as fsOpen, readFile, mkdir, writeFile } from 'fs/promises';
+import { SecretManagerServiceClient }   from '@google-cloud/secret-manager';
+import {
+  open as fsOpen, readFile, mkdir,
+} from 'fs/promises';
 import { constants as FS } from 'fs';
-
 import path from 'path';
 
 /* ── constants ─────────────────────────────────────────────── */
-const ALGO    = 'aes-256-gcm';   // symmetric cipher
+const ALGO = 'aes-256-gcm';
-const IV_LEN  = 12;              // 96‑bit nonce for GCM
+const IV_LEN = 12;          // 96‑bit nonce
 const TAG_LEN = 16;         // 128‑bit auth‑tag
-const MAGIC   = 'gcm:';          // prefix to mark ciphertext
+const MAGIC = 'gcm:';       // ciphertext prefix
 
-/* ── env config (injected via docker‑compose) ──────────────── */
+/* ── env config (docker‑compose) ────────────────────────────── */
-const KMS_KEY   = (process.env.KMS_KEY_NAME || '').trim();  // projects/*/locations/*/keyRings/*/cryptoKeys/*
+const KMS_KEY   = (process.env.KMS_KEY_NAME || '').trim();
-const EDEK_PATH = (process.env.DEK_PATH     || '').trim();  // e.g. /run/secrets/dev/dek.enc
+const EDEK_PATH = (process.env.DEK_PATH     || '').trim();       // /run/secrets/<env>/dek.enc
+const ENV_NAME  = (process.env.ENV_NAME     || 'dev').trim();    // dev | staging | prod
+const PROJECT   = (process.env.PROJECT      || 'aptivaai-dev').trim();
 
 if (!EDEK_PATH) {
   console.error('FATAL: DEK_PATH env var is unset — check deploy script');
   process.exit(1);
 }
+const FPR_PATH  = path.join(path.dirname(EDEK_PATH), 'dek.fpr');
+const SM_SECRET = `WRAPPED_DEK_${ENV_NAME.toUpperCase()}`;
 
-let dek;               // in‑memory data‑encryption‑key
+let dek;            // plaintext DEK in memory
-let initPromise = null;
+let initPromise;    // so parallel callers wait only once
+
+/* ── helper: upload a backup copy to Secret Manager ─────────── */
+async function backupToSecretManager (ciphertext /* Buffer */) {
+  const sm = new SecretManagerServiceClient();
+
+  /* ensure the secret exists – idempotent */
+  try {
+    await sm.getSecret({ name: `projects/${PROJECT}/secrets/${SM_SECRET}` });
+  } catch {
+    await sm.createSecret({
+      parent   : `projects/${PROJECT}`,
+      secretId : SM_SECRET,
+      secret   : { replication: { automatic: {} } },
+    });
+  }
+
+  /* add a new version (binary) */
+  await sm.addSecretVersion({
+    parent  : `projects/${PROJECT}/secrets/${SM_SECRET}`,
+    payload : { data: ciphertext },
+  });
+  console.log(`[ENCRYPT] ⬆️  copied dek.enc to Secret Manager (${SM_SECRET})`);
+}
 
 /* ─────────────────────────────────────────────────────────────
-   One‑time DEK unwrap (or generate + wrap)
+   One‑time DEK unwrap / generate + fingerprint validation
    ──────────────────────────────────────────────────────────── */
 export async function initEncryption () {
-  /* fast path ─ already done in this process */
   if (dek)              return;
   if (initPromise)      return initPromise;
 
@@ -44,100 +69,110 @@ export async function initEncryption () {
     const kms = new KeyManagementServiceClient();
     const dir = path.dirname(EDEK_PATH);
 
-    /* 1 ── try the happy path: read existing wrapped key */
+    /* 1 – optimistic: use existing wrapped key */
     try {
-      const edek = await readFile(EDEK_PATH);
+      const wrapped = await readFile(EDEK_PATH);
-      const [resp] = await kms.decrypt({ name: KMS_KEY, ciphertext: edek });
+      dek = (await kms.decrypt({ name: KMS_KEY, ciphertext: wrapped }))[0].plaintext;
-      dek = resp.plaintext;
-      process.env.DEBUG_ENCRYPTION === 'true'
-        && console.log('[ENCRYPT] DEK unwrapped from KMS');
-      return;
     } catch (err) {
       if (err.code !== 'ENOENT') throw err;  // genuine failure
-    }
 
-    /* 2 ── file does not exist ⇒ we’re in a race to create it         */
+      /* 2 – first container wins: create DEK & wrap */
       await mkdir(dir, { recursive: true });
-
       try {
-      /* exclusive create – succeeds for exactly ONE container */
         const fh = await fsOpen(EDEK_PATH, FS.O_WRONLY | FS.O_CREAT | FS.O_EXCL, 0o600);
         try {
-        dek = randomBytes(32);                    // 256‑bit AES key
+          dek = randomBytes(32);
-        const [wrapResp] = await kms.encrypt({ name: KMS_KEY, plaintext: dek });
+          const [resp] = await kms.encrypt({ name: KMS_KEY, plaintext: dek });
-        await fh.writeFile(wrapResp.ciphertext);
+          const wrapped = resp.ciphertext;        // Buffer
-        process.env.DEBUG_ENCRYPTION === 'true'
+
-          && console.log('[ENCRYPT] New DEK generated & wrapped');
+          await fh.writeFile(wrapped);            // primary copy
+          backupToSecretManager(wrapped)          // async fire‑and‑forget
+            .catch(e => console.error('[ENCRYPT] backup failed:', e.message));
         } finally {
           await fh.close();
         }
-      return;                                    // we are the winner
+      } catch (race) {
-    } catch (err) {
+        if (race.code !== 'EEXIST') throw race;  // unexpected
-      if (err.code !== 'EEXIST') throw err;      // unexpected error
+        /* another container already wrote the file */
-      /* another container won – fall through to retry loop */
+        const wrapped = await readFile(EDEK_PATH);
+        dek = (await kms.decrypt({ name: KMS_KEY, ciphertext: wrapped }))[0].plaintext;
+      }
     }
 
-    /* 3 ── wait until the winner finishes writing, then read */
+    /* 3 – fingerprint validation */
-    const maxRetries = 30;                       // ~3 s total
+    const fp = createHash('sha256').update(dek).digest('hex').slice(0, 16);
-    for (let i = 0; i < maxRetries; i++) {
     try {
-        const edek = await readFile(EDEK_PATH);
+      const onDisk = (await readFile(FPR_PATH, 'utf8')).trim();
-        const [resp] = await kms.decrypt({ name: KMS_KEY, ciphertext: edek });
+      if (onDisk !== fp) throw new Error(`fingerprint mismatch: ${onDisk} ≠ ${fp}`);
-        dek = resp.plaintext;
-        process.env.DEBUG_ENCRYPTION === 'true'
-          && console.log('[ENCRYPT] DEK unwrapped after retry');
-        return;
     } catch (err) {
-        if (err.code !== 'ENOENT') throw err;
+      if (err.code !== 'ENOENT') throw err;   // real error
-        await new Promise(r => setTimeout(r, 100));   // back‑off 100 ms
+
+      /* write fingerprint (first‑writer wins) */
+      await fsOpen(FPR_PATH, FS.O_WRONLY | FS.O_CREAT | FS.O_EXCL, 0o444)
+            .then(fh => fh.writeFile(fp + '\n').finally(() => fh.close()))
+            .catch(async (dup) => {
+              if (dup.code !== 'EEXIST') throw dup;
+              const onDisk = (await readFile(FPR_PATH, 'utf8')).trim();
+              if (onDisk !== fp) throw new Error(`fingerprint mismatch: ${onDisk} ≠ ${fp}`);
+            });
     }
-    }
+
-    throw new Error(`Timed out waiting for ${EDEK_PATH} to appear`);
+    process.env.DEBUG_ENCRYPTION === 'true'
+      && console.log('[ENCRYPT] DEK ready – fp', fp);
   })();
 
   return initPromise;
 }
 
-/* ─────────────────────────────────────────────────────────────
+export const SENTINEL = 'aptiva-canary-v1';
-   Symmetric encryption helpers
-   ──────────────────────────────────────────────────────────── */
-export function encrypt (plain) {
-  if (plain == null) return null;                  // leave NULLs untouched
-  if (isEncrypted(plain)) return plain;            // already encrypted
 
+/* ── optional DB sentinel helper ────────────────────────────── */
+export async function verifyCanary(pool) {
+  // nothing to verify yet → first ever launch before server1 seeded it
+  const [rows] = await pool.query(
+    'SELECT value FROM encryption_canary WHERE id = 1 LIMIT 1'
+  );
+  if (!rows || rows.length === 0) return;
+
+  const val = rows[0].value;
+  let plain;
+  try {
+    plain = decrypt(val);
+  } catch {
+    throw new Error('DEK cannot decrypt sentinel row');
+  }
+
+  if (plain !== SENTINEL) {
+    throw new Error('DEK mismatch: sentinel value differs');
+  }
+}
+
+/* ── crypto helpers (encrypt / decrypt / hash) ─────────────── */
+export function encrypt (plain) {
+  if (plain == null || isEncrypted(plain)) return plain;
   const iv = randomBytes(IV_LEN);
   const cipher = createCipheriv(ALGO, dek, iv);
   const ct = Buffer.concat([cipher.update(String(plain), 'utf8'), cipher.final()]);
   const tag = cipher.getAuthTag();
-
   return MAGIC + Buffer.concat([iv, tag, ct]).toString('base64');
 }
 
 export function decrypt (val) {
-  if (!isEncrypted(val)) return val;               // fast‑exit for plain text
+  if (!isEncrypted(val)) return val;
-
   const buf = Buffer.from(val.slice(MAGIC.length), 'base64');
   const iv  = buf.subarray(0, IV_LEN);
   const tag = buf.subarray(IV_LEN, IV_LEN + TAG_LEN);
   const ct  = buf.subarray(IV_LEN + TAG_LEN);
-
   const decipher = createDecipheriv(ALGO, dek, iv);
   decipher.setAuthTag(tag);
   return Buffer.concat([decipher.update(ct), decipher.final()]).toString('utf8');
 }
 
-/* ─────────────────────────────────────────────────────────────
-   Deterministic HMAC (for indexed look‑ups, optional)
-   ──────────────────────────────────────────────────────────── */
 export function hashForLookup (plain) {
   if (plain == null) return null;
-  const h = createHmac('sha256', dek).update(String(plain)).digest('hex');
+  return createHmac('sha256', dek).update(String(plain)).digest('hex');
-  return h;                         // 64‑char hex
 }
 
-/* ─────────────────────────────────────────────────────────────
-   Utility: is this value an AES‑GCM ciphertext we created?
-   ──────────────────────────────────────────────────────────── */
 export function isEncrypted (val) {
   return typeof val === 'string'
       && val.startsWith(MAGIC)

docker-compose.yml

@@ -12,8 +12,18 @@ services:
   server1:
     <<: *with-env
     image: us-central1-docker.pkg.dev/aptivaai-dev/aptiva-repo/server1:${IMG_TAG}
+    user: "1000:1000"          
+    read_only: true            
+    tmpfs:
+      - /tmp                   
+    security_opt:              
+      - no-new-privileges:true
+    cap_drop:                  
+      - ALL
     expose: ["${SERVER1_PORT}"]
     environment:
+      ENV_NAME: ${ENV_NAME}
+      PROJECT: ${PROJECT}
       KMS_KEY_NAME: ${KMS_KEY_NAME}
       DEK_PATH: ${DEK_PATH}
       JWT_SECRET: ${JWT_SECRET}
@@ -31,7 +41,7 @@ services:
     volumes:
       - ./salary_info.db:/app/salary_info.db:ro
       - ./user_profile.db:/app/user_profile.db
-      - dek-vol:/run/secrets
+      - dek-vol:/run/secrets:rw
     healthcheck:
       test: ["CMD-SHELL", "curl -f http://localhost:${SERVER1_PORT}/healthz || exit 1"]
       interval: 30s
@@ -42,8 +52,18 @@ services:
   server2:
     <<: *with-env
     image: us-central1-docker.pkg.dev/aptivaai-dev/aptiva-repo/server2:${IMG_TAG}
+    user: "1000:1000"          
+    read_only: true            
+    tmpfs:
+      - /tmp                   
+    security_opt:              
+      - no-new-privileges:true
+    cap_drop:                  
+      - ALL
     expose: ["${SERVER2_PORT}"]
     environment:
+      ENV_NAME: ${ENV_NAME}
+      PROJECT: ${PROJECT}
       KMS_KEY_NAME: ${KMS_KEY_NAME}
       DEK_PATH: ${DEK_PATH}
       ONET_USERNAME: ${ONET_USERNAME}
@@ -55,6 +75,9 @@ services:
       DB_USER: ${DB_USER}
       DB_PASSWORD: ${DB_PASSWORD}
       DB_NAME: ${DB_NAME}
+      DB_SSL_CERT: ${DB_SSL_CERT}
+      DB_SSL_KEY: ${DB_SSL_KEY}
+      DB_SSL_CA: ${DB_SSL_CA}
       CORS_ALLOWED_ORIGINS: ${CORS_ALLOWED_ORIGINS}
       SALARY_DB_PATH: /app/salary_info.db
       FROM_SECRETS_MANAGER: ${FROM_SECRETS_MANAGER}
@@ -62,7 +85,7 @@ services:
       - ./public:/app/public:ro
       - ./salary_info.db:/app/salary_info.db:ro
       - ./user_profile.db:/app/user_profile.db
-      - dek-vol:/run/secrets
+      - dek-vol:/run/secrets:ro
     healthcheck:
       test: ["CMD-SHELL", "curl -f http://localhost:${SERVER2_PORT}/healthz || exit 1"]
       interval: 30s
@@ -73,8 +96,18 @@ services:
   server3:
     <<: *with-env
     image: us-central1-docker.pkg.dev/aptivaai-dev/aptiva-repo/server3:${IMG_TAG}
+    user: "1000:1000"          
+    read_only: true            
+    tmpfs:
+      - /tmp                   
+    security_opt:              
+      - no-new-privileges:true
+    cap_drop:                  
+      - ALL
     expose: ["${SERVER3_PORT}"]
     environment:
+      ENV_NAME: ${ENV_NAME}
+      PROJECT: ${PROJECT}
       KMS_KEY_NAME: ${KMS_KEY_NAME}
       DEK_PATH: ${DEK_PATH}
       JWT_SECRET: ${JWT_SECRET}
@@ -103,7 +136,7 @@ services:
     volumes:
       - ./salary_info.db:/app/salary_info.db:ro
       - ./user_profile.db:/app/user_profile.db
-      - dek-vol:/run/secrets
+      - dek-vol:/run/secrets:ro
     healthcheck:
       test: ["CMD-SHELL", "curl -f http://localhost:${SERVER3_PORT}/healthz || exit 1"]
       interval: 30s
@@ -113,7 +146,7 @@ services:
   # ───────────────────────────── nginx ───────────────────────────────
   nginx:
     <<: *with-env
-    image: nginx:1.25-alpine
+    image: us-central1-docker.pkg.dev/aptivaai-dev/aptiva-repo/nginx:${IMG_TAG}
     command: ["nginx", "-g", "daemon off;"]
     depends_on: [server1, server2, server3]
     networks: [default, aptiva-shared]
@@ -131,6 +164,6 @@ networks:
     
 volumes:
     dek-vol:
-      name:            
+      name: aptiva_dek_dev           
       driver: local
 

docker-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# 1. Derive the directory from DEK_PATH (e.g. /run/secrets/dev/dek.enc ⇒ /run/secrets/dev)
+EDEK_DIR="$(dirname "${DEK_PATH}")"
+
+# 2. Make sure it exists and is owned by UID 1000 (the “node” user in the official image)
+mkdir -p  "${EDEK_DIR}"
+chown -R 1000:1000 "${EDEK_DIR}"
+
+# 3. Chain‑exec as the unprivileged user
+exec gosu node "$@"

migrate_encrypted_columns.sql

@@ -36,6 +36,8 @@ ALTER TABLE career_profiles
   MODIFY career_goals                            MEDIUMTEXT,
   MODIFY desired_retirement_income_monthly       VARCHAR(128);
 
+encryption_canary(id INTEGER PRIMARY KEY, value TEXT)
+
 /* ────────────────────────────────────────────────────────────────
    college_profiles – migrate for encrypted VARCHAR columns
    ────────────────────────────────────────────────────────────────

package-lock.json

@@ -10,6 +10,7 @@
       "license": "ISC",
       "dependencies": {
         "@google-cloud/kms": "^5.1.0",
+        "@google-cloud/secret-manager": "^6.1.0",
         "@radix-ui/react-dialog": "^1.0.0",
         "@radix-ui/react-icons": "^1.3.2",
         "@radix-ui/react-progress": "^1.1.2",
@@ -2511,6 +2512,18 @@
         "node": ">=18"
       }
     },
+    "node_modules/@google-cloud/secret-manager": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/@google-cloud/secret-manager/-/secret-manager-6.1.0.tgz",
+      "integrity": "sha512-IrXjT1z2yW98htydkopcxdhNVh4rpAzO3oTVzKymfdnzmzCKWVxhfwYWWvIor1bzgQN4sa21Wv0CMDokJyTt7A==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "google-gax": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@grpc/grpc-js": {
       "version": "1.13.4",
       "resolved": "https://registry.npmjs.org/@grpc/grpc-js/-/grpc-js-1.13.4.tgz",

package.json

@@ -5,6 +5,7 @@
   "type": "module",
   "dependencies": {
     "@google-cloud/kms": "^5.1.0",
+    "@google-cloud/secret-manager": "^6.1.0",
     "@radix-ui/react-dialog": "^1.0.0",
     "@radix-ui/react-icons": "^1.3.2",
     "@radix-ui/react-progress": "^1.1.2",