v.1.0.0. initial push of license-lib

server/verify.js

@@ -0,0 +1,23 @@
+// server/verify.js
+const { decrypt } = require('./utils/crypto');
+const { hashLicenseKey } = require('./keygen');
+const { getLicense } = require('./models/license');
+
+const verifyLicenseKey = async (userId, token) => {
+  try {
+    const payload = decrypt(token);
+    if (payload.userId !== userId) return false;
+
+    const storedLicense = await getLicense(userId);
+    const hashed = hashLicenseKey(payload.rawKey);
+
+    if (storedLicense.hashed_key !== hashed) return false;
+    if (storedLicense.license_type !== 'one-time' && storedLicense.valid_until && new Date(storedLicense.valid_until) < new Date()) return false;
+
+    return true;
+  } catch (err) {
+    return false;
+  }
+};
+
+module.exports = { verifyLicenseKey };