From 33ec70d57eedd575cdb51192c603adc77afb5ad0 Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <schiessle@owncloud.com>
Date: Mon, 22 Feb 2016 18:24:54 +0100
Subject: [PATCH] since 9.0 we have a additional parameter $position used for
 integrity checks

---
 lib/public/encryption/iencryptionmodule.php | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/lib/public/encryption/iencryptionmodule.php b/lib/public/encryption/iencryptionmodule.php
index 45e0b79c2a9..df30dd57cee 100644
--- a/lib/public/encryption/iencryptionmodule.php
+++ b/lib/public/encryption/iencryptionmodule.php
@@ -71,29 +71,41 @@ interface IEncryptionModule {
 	 * buffer.
 	 *
 	 * @param string $path to the file
+	 * @param string $position id of the last block (looks like "<Number>end")
+	 *
 	 * @return string remained data which should be written to the file in case
 	 *                of a write operation
+	 *
 	 * @since 8.1.0
+	 * @since 9.0.0 parameter $position added
 	 */
-	public function end($path);
+	public function end($path, $position);
 
 	/**
 	 * encrypt data
 	 *
 	 * @param string $data you want to encrypt
+	 * @param string $position position of the block we want to encrypt (starts with '0')
+	 *
 	 * @return mixed encrypted data
+	 *
 	 * @since 8.1.0
+	 * @since 9.0.0 parameter $position added
 	 */
-	public function encrypt($data);
+	public function encrypt($data, $position);
 
 	/**
 	 * decrypt data
 	 *
 	 * @param string $data you want to decrypt
+	 * @param string $position position of the block we want to decrypt
+	 *
 	 * @return mixed decrypted data
+	 *
 	 * @since 8.1.0
+	 * @since 9.0.0 parameter $position added
 	 */
-	public function decrypt($data);
+	public function decrypt($data, $position);
 
 	/**
 	 * update encrypted file, e.g. give additional users access to the file
-- 
2.39.5