From 7b9d53b7eaccaffa5f9844f700a9d9eb9cd78591 Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <schiessle@owncloud.com>
Date: Mon, 21 Mar 2016 15:47:24 +0100
Subject: [PATCH] no need to calculate the header size, if the first block
 contain a header we already know the size

---
 lib/private/files/storage/wrapper/encryption.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/private/files/storage/wrapper/encryption.php b/lib/private/files/storage/wrapper/encryption.php
index 81eea9944f..ef5d32b482 100644
--- a/lib/private/files/storage/wrapper/encryption.php
+++ b/lib/private/files/storage/wrapper/encryption.php
@@ -841,7 +841,7 @@ class Encryption extends Wrapper {
 		$firstBlock = $this->readFirstBlock($path);
 
 		if (substr($firstBlock, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
-			$headerSize = strlen($firstBlock);
+			$headerSize = $this->util->getHeaderSize();
 		}
 
 		return $headerSize;