fix: cache validation of system keys

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

apps/encryption/lib/Users/Setup.php

@@ -9,13 +9,18 @@
 
 use OCA\Encryption\Crypto\Crypt;
 use OCA\Encryption\KeyManager;
+use OCP\ICache;
+use OCP\ICacheFactory;
 
 class Setup {
+	private readonly ICache $cache;
 
 	public function __construct(
 		private Crypt $crypt,
 		private KeyManager $keyManager,
+		ICacheFactory $cacheFactory,
 	) {
+		$this->cache = $cacheFactory->createLocal('encryption-setup');
 	}
 
 	/**
@@ -35,7 +40,10 @@ public function setupUser($uid, $password) {
 	 * make sure that all system keys exists
 	 */
 	public function setupSystem() {
-		$this->keyManager->validateShareKey();
-		$this->keyManager->validateMasterKey();
+		if (!$this->cache->get('keys-validated')) {
+			$this->keyManager->validateShareKey();
+			$this->keyManager->validateMasterKey();
+			$this->cache->set('keys-validated', true);
+		}
 	}
 }