From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754069AbbLIMU2 (ORCPT ); Wed, 9 Dec 2015 07:20:28 -0500 Received: from helcar.hengli.com.au ([209.40.204.226]:49358 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753954AbbLIMTu (ORCPT ); Wed, 9 Dec 2015 07:19:50 -0500 Date: Wed, 9 Dec 2015 20:19:23 +0800 From: Herbert Xu To: "Jason A. Donenfeld" Cc: davem@davemloft.net, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, Netdev , martin@strongswan.org, stable@vger.kernel.org Subject: Re: [PATCH 2/2] chacha20poly1305: Skip encryption/decryption for 0-len Message-ID: <20151209121923.GD27962@gondor.apana.org.au> References: <1449366698-2422-1-git-send-email-Jason@zx2c4.com> <1449366698-2422-2-git-send-email-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1449366698-2422-2-git-send-email-Jason@zx2c4.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Dec 06, 2015 at 02:51:38AM +0100, Jason A. Donenfeld wrote: > If the length of the plaintext is zero, there's no need to waste cycles > on encryption and decryption. Using the chacha20poly1305 construction > for zero-length plaintexts is a common way of using a shared encryption > key for AAD authentication. > > Signed-off-by: Jason A. Donenfeld Patch applied. Thanks. -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt