only encrypt files and files_versions

apps/encryption/lib/crypto/encryption.php

@@ -278,9 +278,21 @@ class Encryption implements IEncryptionModule {
 	 * @return boolean
 	 */
 	public function shouldEncrypt($path) {
+		$parts = explode('/', $path);
+		if (count($parts) < 3) {
+			return false;
+		}
+
+		if ($parts[2] == '/files/') {
+			return true;
+		}
+		if ($parts[2] == '/files_versions/') {
 			return true;
 		}
 
+		return false;
+	}
+
 	/**
 	 * calculate unencrypted size
 	 *