fix: support deno + caching_sha2_password FULL_AUTHENTICATION_PACKET flow (#2704)

* use explicit padding in publicEncrypt so that it works consistently in node and deno

Author: sidorares

.github/workflows/ci-linux.yml

@@ -108,3 +108,53 @@ jobs:
           FILTER: test-select-1|test-select-ssl
         run: bun run test:bun
         timeout-minutes: 1
+
+  tests-linux-deno:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        deno-version: [v1.43.6, canary]
+        mysql-version: ["mysql:8.0.33"]
+        use-compression: [0, 1]
+        use-tls: [0,1]
+
+    name: Deno ${{ matrix.deno-version }} - DB ${{ matrix.mysql-version }} - SSL=${{matrix.use-tls}} Compression=${{matrix.use-compression}}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up MySQL
+        run: docker run -d -e MYSQL_ALLOW_EMPTY_PASSWORD=1 -e MYSQL_DATABASE=${{ env.MYSQL_DATABASE }} -v $PWD/mysqldata:/var/lib/mysql/ -v $PWD/test/fixtures/custom-conf:/etc/mysql/conf.d -v $PWD/test/fixtures/ssl/certs:/certs -p ${{ env.MYSQL_PORT }}:3306 ${{ matrix.mysql-version }}
+
+      - name: Set up Deno ${{ matrix.deno-version }}
+        uses: denoland/setup-deno@v1
+        with:
+          deno-version: ${{ matrix.deno-version }}
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - name: Cache dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.npm
+          key: npm-linux-${{ hashFiles('package-lock.json') }}
+          restore-keys: npm-linux-
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: Wait mysql server is ready
+        run: node tools/wait-up.js
+
+      # todo: check what we need to do to run all tests with deno
+      - name: run tests
+        env:
+          MYSQL_USER: ${{ env.MYSQL_USER }}
+          MYSQL_DATABASE: ${{ env.MYSQL_DATABASE }}
+          MYSQL_PORT: ${{ env.MYSQL_PORT }}
+          MYSQL_USE_COMPRESSION: ${{ matrix.use-compression }}
+          MYSQL_USE_TLS: ${{ matrix.use-tls }}
+        run: deno test --allow-net --allow-env --allow-read test/deno.ts
+        timeout-minutes: 1      

lib/auth_plugins/caching_sha2_password.js

@@ -36,7 +36,10 @@ function encrypt(password, scramble, key) {
     Buffer.from(`${password}\0`, 'utf8'),
     scramble
   );
-  return crypto.publicEncrypt(key, stage1);
+  return crypto.publicEncrypt({
+    key,
+    padding: crypto.constants.RSA_PKCS1_OAEP_PADDING
+  }, stage1);
 }
 
 module.exports = (pluginOptions = {}) => ({ connection }) => {

test/deno.ts

@@ -0,0 +1,26 @@
+import { createRequire } from 'node:module';
+const require = createRequire(import.meta.url);
+const mysql = require('../index.js');
+
+const connection = mysql.createConnection({
+  host: Deno.env.get('MYSQL_HOST'),
+  port: Deno.env.get('MYSQL_PORT'),
+  user: Deno.env.get('MYSQL_USER'),
+  password: Deno.env.get('MYSQL_PASSWORD'),
+  database: Deno.env.get('MYSQL_DATABASE'),
+});
+
+connection.on('error', (err: Error) => {
+  console.error(err);
+  Deno.exit(1);
+});
+
+connection.on('connect', () => {
+  connection.query('SELECT 1 + 1 AS solution', (err: Error) => {
+    if (err) {
+      console.error(err);
+      Deno.exit(1);
+    }
+    connection.end();
+  });
+});