From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758723Ab2DJNXq (ORCPT ); Tue, 10 Apr 2012 09:23:46 -0400 Received: from m50-132.163.com ([123.125.50.132]:41005 "EHLO m50-132.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752762Ab2DJNXp (ORCPT ); Tue, 10 Apr 2012 09:23:45 -0400 From: "Li Wang" To: "Tyler Hicks" , , , Cc: , , Subject: [RFC] eCryptfs file system with HMAC verification Date: Tue, 10 Apr 2012 21:22:24 +0800 Message-ID: <000301cd171c$f8bb4cc0$ea31e640$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac0XHPekaJInBsRUSDyrEce3yp35lQ== Content-Language: zh-cn X-CM-TRANSID: DNGowEAp43gTNIRPprCeCA--.933S2 X-Coremail-Antispam: 1Uf129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UbIYCTnIWIevJa73UjIFyTuYvjxUSRwZUUUUU X-CM-SenderInfo: 5gudw0hq1owwlo16il2tof0z/1tbiWxSM509opfh1zAAAsn Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, we have implemented a prototype, which equips eCryptfs with HMAC verification, based on the kernel crypto API. This enables eCryptfs to detect unauthorized (cipher) data modification and unexpected data corruption. And the preliminary experiments demonstrate the decrease in throughput is modest. As a file system highlighting security, we think it should be useful. Any comments/suggestions are welcome. Cheers, Li Wang