Received: by 10.223.185.116 with SMTP id b49csp2574480wrg; Mon, 12 Feb 2018 11:53:23 -0800 (PST) X-Google-Smtp-Source: AH8x226jdpHMRWI9LfzcVSR2u0ccmHVQBlC+L4FpaviMCD5kq/3DCj7j91kQY67oOKBZWroGXLg/ X-Received: by 2002:a17:902:9a84:: with SMTP id w4-v6mr11689361plp.136.1518465203796; Mon, 12 Feb 2018 11:53:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518465203; cv=none; d=google.com; s=arc-20160816; b=dApocY82uzVeeek7AxFzshF7++uIO5/VYh5W6a4jHCdgq+kIIty3+lLKl+WpB+X5fz 1XtEMoTBp9GPULfMkah0j2sR6ZHg2zkvXWzMSuISfNQSkj3JT7rA0cvbZAnJaNiNtvPU Zatta5Qbmmo6kIJJtlUHI+1fOnCTVUbUYvoUDGjd770CclHo0d7YXHoQ5LM0IKCzVjU2 Z9DnAvyKnEZQMHcZxmADqEocRDPzLP3dMSlPTFms5cc2owz5Lnnb4Iqdhcx5zGSpXZI4 1jCEISRvMBuPsZoWJ/kTLivHjXOZQonNtVp4mo8Ujjmvtu6W4z3bKTx2c8p6ACqcrZLj 20GA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:spamdiagnosticmetadata :spamdiagnosticoutput:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature:dkim-signature:arc-authentication-results; bh=dUHeKxNeAwdy4IKlu/l6rm0kXXAg/0qUHSjDNAIGgfY=; b=H46Av317gAVePLR2yhmoDb4rBUkPIp6mgIgIAurEkpHjFgxCUeaIM+h830mFqTImgF /9r1+LafU8I2zx7Lxqv8Lb5VeFVkisrNW3HqB7SVQ5afJO7wQE+b+S+nRSgIK3IdNATp QnUTDBNOI+Ac+Fgk8j0UZxB+wljap1siW3/JVtCcUGngXbFI6HPF7z/YyqdeyVr4LAjQ b+jGR/sRPSnq3jIwT3Lb5R2TV+NrYC6SUEs2vQ6bFNDkaXUQciFR/EtkLfPpgmBR0o7v 0dMAJpX5JKzrqI6RpIJVxltKMOAig0ma2hxUHzW5DPdKdrsZMo/v6Zmpku123596y0hm aDDg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=kKcr/yS+; dkim=fail header.i=@fb.onmicrosoft.com header.s=selector1-fb-com header.b=Fx2g5phT; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=fb.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b15si1508803pfh.30.2018.02.12.11.53.09; Mon, 12 Feb 2018 11:53:23 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=kKcr/yS+; dkim=fail header.i=@fb.onmicrosoft.com header.s=selector1-fb-com header.b=Fx2g5phT; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=fb.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753994AbeBLTvQ (ORCPT + 99 others); Mon, 12 Feb 2018 14:51:16 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:44016 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750953AbeBLTvL (ORCPT ); Mon, 12 Feb 2018 14:51:11 -0500 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1CJnuVW009329; Mon, 12 Feb 2018 11:50:54 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=facebook; bh=dUHeKxNeAwdy4IKlu/l6rm0kXXAg/0qUHSjDNAIGgfY=; b=kKcr/yS++Sahjq8cYx+3p+XrLptDS8ljz4X8NPA51/oM4zUmztdzENzY4AqWg2Uny2Eg 7TjJxbGAMiOlSHnSWLBhvicuuu6oHZweBrAzmnVTX85IEmZ4Cyi7kxmQyp7EwaDpiV+y MHevVPpHtkYgIQ8021U7AeqGmsGlJoka5/I= Received: from maileast.thefacebook.com ([199.201.65.23]) by mx0a-00082601.pphosted.com with ESMTP id 2g3gdn86rq-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 12 Feb 2018 11:50:54 -0800 Received: from NAM02-BL2-obe.outbound.protection.outlook.com (192.168.183.28) by o365-in.thefacebook.com (192.168.177.28) with Microsoft SMTP Server (TLS) id 14.3.361.1; Mon, 12 Feb 2018 14:50:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.onmicrosoft.com; s=selector1-fb-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=dUHeKxNeAwdy4IKlu/l6rm0kXXAg/0qUHSjDNAIGgfY=; b=Fx2g5phTDrh3uTGagM9umH2YJqqxZprrnSA/ar73V3CEZclKGIK4ZqL5o1S3SkSTF8eBfZzNNhI2Rq9upYntCEm8IbOZKy4xppqBlTMtv5GEYUJxEfzyMFuDqpnvN4Wdnv+1T6OV8LruRckXLYLkRr3knp+QnzCSz4Vb4jTVqrk= Received: from localhost (2620:10d:c090:200::6:842f) by DM5PR15MB1756.namprd15.prod.outlook.com (10.174.246.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.485.10; Mon, 12 Feb 2018 19:50:51 +0000 Date: Mon, 12 Feb 2018 11:50:44 -0800 From: Dave Watson To: Herbert Xu , Junaid Shahid , Steffen Klassert , CC: "David S. Miller" , Hannes Frederic Sowa , Tim Chen , Sabrina Dubroca , , Stephan Mueller , Ilya Lesokhin Subject: [PATCH 11/14] x86/crypto: aesni: Introduce partial block macro Message-ID: <20180212195044.GA60984@davejwatson-mba.local> References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.0 (2016-04-01) X-Originating-IP: [2620:10d:c090:200::6:842f] X-ClientProxiedBy: CY4PR18CA0043.namprd18.prod.outlook.com (10.173.177.29) To DM5PR15MB1756.namprd15.prod.outlook.com (10.174.246.138) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f514d1ab-1411-44ba-b415-08d57251eb94 X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4604075)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603307)(7153060)(7193020);SRVR:DM5PR15MB1756; X-Microsoft-Exchange-Diagnostics: 1;DM5PR15MB1756;3:OHcuhtP5QFIA/n1EGb8E06oGbuc4YuFNNLJzYii8hrdTJsg1OJ19FuV623VCtOHUPXhWdvyAHMBUB4CsCqWTh8CotbF4bYwvGdiyn9292MeJ/z7BNvAHxL9VWxDO3tOVYmzjKeqACnp2Bc4Tu8/VYA0u5o0dwz+tiCUbiqcxV5ivQp8ad84/i/Z7WziOy3z8dj6sY+UT68QtrG2aiGNB63OlaO7q4rI+LhlTfM1xDb/VBFW0yKhr65f3gwvKYez6;25:L4s/+IU7HDC9D9ptnyTZzUoRqHyGuuYZi/lP7VHqbaQy71ZDmhvcimHjV1V1c7o1evFAnewmnGuy83BSP61wDG0LFvAChiChLVSTvuBO9WIHX66InT0xAriPPjlDQjhW5wpFQFBf2QV6LmzoTsC4u+YwmQiayCC7ng7Fjlwg5CJEkSGh3vYj7KcKDMLBAjMVHh+wL+pZm9twS20wZSXPsmxctezzL1hb6xObk9bOQws6E9Uz+zBKx655wgqfVNMGZ15cJ3NhPXgIu9di1G/vXAvCUCAcexEii4sIjOivJ5Y7yOyEow+wbgKQK24/pjOqnJmDdDUxeFUzmFXeVUtjeA==;31:47QuP+bnruNXkJhXzXNvLd8g+p2lBdFsDcN7Aj7L4/LrDyCRRtFJ1kIGR7XiMxGB7TRDp412vfCBwrgmzrWRRlRfk3xdh01YSCz5DCSLixrHPtsYRCv6UNj8yofo5U8BXk7BtoQ9FyuhfdhRZ/fV+DjKUB2wOkfnE0Xbt2NH1OYYTwip0/FRu/kfjzJTSRji0AK5cpMYQTAjHQqUllAosyUzGSGY69hZgm3oTBcbTHQ= X-MS-TrafficTypeDiagnostic: DM5PR15MB1756: X-Microsoft-Exchange-Diagnostics: 1;DM5PR15MB1756;20: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;4:rKyiklZfBRVjX+swu6hnvdTjldQDmE7LpDWOcfGyDepxS7qT7cCFEhbSKoNVjXYbcSyzsBlh66VLjNnRtesUWMr0sg3C1E9C26L+YWuT4o9LBGYBSN1IwlDkS9o3FF8A8xAtbjE4Rg5DI4FUvLE/F6GhLpV47Kr+pkbwPS9zt3mr+CA7fTexH/SkFqqQojyMqK6+GoHOz4trnlIPvXmLGQT4c+FT/UB6SvLGefWGnPIE5CIYSXuFIbTQqvBqDEUpDDcilOkQLVjUI+nS9lb4n5tebtShHUB2R+EhMwEHmYx8gXo30tPxdlKHL9MjvniwFSupwueZG9V1VghvKAsrw8jcPzQ+pofGevsxzZHeRbg= X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:(67672495146484)(266576461109395); X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(6040501)(2401047)(8121501046)(5005006)(3002001)(3231101)(11241501184)(944501161)(93006095)(93001095)(10201501046)(6041288)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123560045)(20161123564045)(20161123558120)(20161123562045)(6072148)(201708071742011);SRVR:DM5PR15MB1756;BCL:0;PCL:0;RULEID:;SRVR:DM5PR15MB1756; X-Forefront-PRVS: 0581B5AB35 X-Forefront-Antispam-Report: SFV:NSPM;SFS:(10019020)(6069001)(366004)(39380400002)(376002)(39860400002)(346002)(396003)(199004)(189003)(16586007)(97736004)(316002)(7416002)(186003)(23726003)(16526019)(5660300001)(59450400001)(1076002)(50466002)(6116002)(33896004)(7736002)(110136005)(54906003)(386003)(305945005)(86362001)(25786009)(58126008)(83506002)(2906002)(33656002)(6666003)(8676002)(6346003)(478600001)(2950100002)(106356001)(68736007)(8936002)(81166006)(81156014)(98436002)(105586002)(76506005)(76176011)(4326008)(9686003)(53936002)(52116002)(52396003)(47776003)(6486002)(6496006)(18370500001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR15MB1756;H:localhost;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; Received-SPF: None (protection.outlook.com: fb.com does not designate permitted sender hosts) X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1;DM5PR15MB1756;23:06Rla343lPhNntBSVppGzUQOCsOIlb2bgtUy9dKCL?= =?us-ascii?Q?cmCeXYCUWFMemgumKogT99wDybSDxAfw93848aofjbiJv4uVtuVpLThazXP1?= =?us-ascii?Q?DdMlJkQmqEw6QzuF3DQZExEI2ur1KoroGBsqQUzf5AIrSMMtRVmcCU+saXY+?= =?us-ascii?Q?vUhP3qQBF+W+MQUB0p0z/pmBvC8AYP4eMTLPxR5edcktv6cfpq9QVjCdOOsq?= =?us-ascii?Q?tbCaYEJl3MboVS+jxAUfxovVTfdWY+SkxDdWhpc6ECEFZjSdCT738dPu4ZUK?= =?us-ascii?Q?AeJql0ptz0vdr/4Rl18soPAvh+SYXQkYTD8JRbgmbBNShkPlSZRihPpT8Bqb?= =?us-ascii?Q?IeqPI3ov1A/XShOfFirseyjDkjXQQCDCVHrtiZXiJLMM88dEu+Thz9zeTs1e?= =?us-ascii?Q?xaLJtMn12p4DMgbo2LFRZZvnnbTltz0kKZu+pruHdffaEsXRV8OEzwqFFciF?= =?us-ascii?Q?chYtVPOZThOSRsMd5Z8sBldj3umYyJrCS/ULZKRURZBvLwjy05osm5YEvvCR?= =?us-ascii?Q?gTaIpnYYek4JUm9yAqQqyFo8yY1T96NT1J00IViq+Nmdf4M96fBQNqg8Pfhr?= =?us-ascii?Q?aOXbndmId18aOPVvdScp8vfjt+SS3xuzkHHk0Bb6b6Z7iYay3RYgtc8GxBJm?= =?us-ascii?Q?FCmNY/IvJfCFiD8nv+6NE3/F4b6PRxNY0ITWaQ59OnG1GRtWU1bzqQ0g5kWr?= =?us-ascii?Q?/yjRzuViWDNiUjYusyNHcyiHrrgsxssw0r08j/LmGMbctCMwlqOhKUcY4Cqc?= =?us-ascii?Q?KYrEGtZUoWZEKaZlzi/ol/7tVNuYiV3MfqiOLuBUjOE/nRzgObs1XcG+Lg2p?= =?us-ascii?Q?Z2xept4shMya9gbRb60B2qO38/1funZtw0cPnRAqf/cG7/e+b/wgIM6K6fjV?= =?us-ascii?Q?tkuoQPST5Aa7yr9UoQmf4biznMNW6k8DsJEZaEalvnlT358+3tf5gLpE1/NX?= =?us-ascii?Q?dxFAZuZ/PPNqHnOX2BnieRuvq+Ar8v5NmvT0iJY9iGk1RvffJ3Q6V2ynVK8X?= =?us-ascii?Q?cjwoQs6MQetDv8o2ba4Og12pcZTuPafMnsyOlwoI0pl4YVfIg8Bf0L7Qcwyv?= =?us-ascii?Q?5VRB7X/KZx33iqS6J8lSMGUlO9bxZeSo9F188Il2+TWV7IQC8aVmJqoLHM9q?= =?us-ascii?Q?WsCGqKXIyJAkYJOYqOqouxb90fUGEwv40Qsry+8Bt9ZkyINuc8wnh7039wif?= =?us-ascii?Q?56txEvheasPdrlvJ33Tlf6EMtbc0K7e7Y3s+YhxmXCC1Tdvih4PrTjs9iR5R?= =?us-ascii?Q?LCrt2TpMw3NEB/IlduN8xGURwdwRRlghPgqnwMmoL6nHpfTqeOWul0fhPBcH?= =?us-ascii?B?dz09?= X-Microsoft-Exchange-Diagnostics: 1;DM5PR15MB1756;6:AhWi01UcnptP/9CxwKcPHf8O0atrCbwzwj6VDGG0Rs23lxNUiWm1QHvKVVgSQ646cKyjMbz49hVutkzE9kQgYCmOsBVbzcJ4AYWIOLzZ25hYX6HLlfsvXW5dz/iDeyS83aiPqA++8M5Ur8ZxlYr9lYAPMN8TxkJacnwbq22APXBu9LxANbglhARFA/i1GIZ/E0UCDpSw/KUB3s4LAg3kywiFdpUIU/y4FyBXBv7v6LMGFK9NHIkQeTw2jeFUBadgwiQjgvWFZ2OHeP7jnj7wCQrmse96k/j0kIjnnABebaX//tdHC6oLYc8CeSCQkgcPuAQXt5vdyuESWr0tw9mG12kpaj9GeBlEB+eoNHFvFKw=;5:LpvA+iMk5f8t0xs3NjbYOq1bdVe/+Hsa0mVkItZ4aRKEj11hw0ITFDXJNVdrFxSowGtjH3f6nmb4V8nJC5AhHrqJtBLdJbYod0RHYPAbVnoXoNcDhtDhJ88WHVtNvCFn5+TvwGG9yUDeInQLl8eeS3M4Kc38C/5TPBZSgTEVNXE=;24:tdfF5v1vFuVxenfDMHuX9SMeGaTj5PiQdw1kk/w5XeuPtRV1BC76DoyQ8b5wJDJjKephwBLBW25cInPl+IG+bRsn3Wh5jbqmfJbNh3xCS1o=;7:TGjGS4+8dP0oEazIpnzhOVoj9HX12VXMMWaukjHPOueS6fj0aY2sUZmY/IQ5JiInOjgbLUPl+pHMlnEO6Q//TyLN5fWkCT6DS3KuI/y4yz5bPxtJ4B5WejR3NxqlfwJACC7CGGAp3vvGJtzxGDB8JgFkLl8xaUGR9to1oolw/nnLkGBEVVbNlpj8Mu+4+319wl5ST5jn1e/y3sEn53FaXdcuwMG1jq3G0MbF+no2TdAflxxOJo1d5PDMaI/gnkhQ SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1;DM5PR15MB1756;20:JAmymPicql/O1kNsR9u1KVOL9JNyOZScedUIlGUBhrzWuX6T8GugfM8NG9hcAgI35BHeqCol84+JHVAm1inYslDeCMK7Azc2SSFZ4lJRyVHJnFoS9HfJVGVNV+/hjIkCsjXeDenZyiqTJUUYzuyaIMchqPmqVpnXJR8Zylxc8vs= X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Feb 2018 19:50:51.1226 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f514d1ab-1411-44ba-b415-08d57251eb94 X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR15MB1756 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-02-12_08:,, signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Before this diff, multiple calls to GCM_ENC_DEC will succeed, but only if all calls are a multiple of 16 bytes. Handle partial blocks at the start of GCM_ENC_DEC, and update aadhash as appropriate. The data offset %r11 is also updated after the partial block. Signed-off-by: Dave Watson --- arch/x86/crypto/aesni-intel_asm.S | 151 +++++++++++++++++++++++++++++++++++++- 1 file changed, 150 insertions(+), 1 deletion(-) diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index 3ada06b..398bd2237f 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -284,7 +284,13 @@ ALL_F: .octa 0xffffffffffffffffffffffffffffffff movdqu AadHash(%arg2), %xmm8 movdqu HashKey(%arg2), %xmm13 add %arg5, InLen(%arg2) + + xor %r11, %r11 # initialise the data pointer offset as zero + PARTIAL_BLOCK %arg3 %arg4 %arg5 %r11 %xmm8 \operation + + sub %r11, %arg5 # sub partial block data used mov %arg5, %r13 # save the number of bytes + and $-16, %r13 # %r13 = %r13 - (%r13 mod 16) mov %r13, %r12 # Encrypt/Decrypt first few blocks @@ -605,6 +611,150 @@ _get_AAD_done\@: movdqu \TMP6, AadHash(%arg2) .endm +# PARTIAL_BLOCK: Handles encryption/decryption and the tag partial blocks +# between update calls. +# Requires the input data be at least 1 byte long due to READ_PARTIAL_BLOCK +# Outputs encrypted bytes, and updates hash and partial info in gcm_data_context +# Clobbers rax, r10, r12, r13, xmm0-6, xmm9-13 +.macro PARTIAL_BLOCK CYPH_PLAIN_OUT PLAIN_CYPH_IN PLAIN_CYPH_LEN DATA_OFFSET \ + AAD_HASH operation + mov PBlockLen(%arg2), %r13 + cmp $0, %r13 + je _partial_block_done_\@ # Leave Macro if no partial blocks + # Read in input data without over reading + cmp $16, \PLAIN_CYPH_LEN + jl _fewer_than_16_bytes_\@ + movups (\PLAIN_CYPH_IN), %xmm1 # If more than 16 bytes, just fill xmm + jmp _data_read_\@ + +_fewer_than_16_bytes_\@: + lea (\PLAIN_CYPH_IN, \DATA_OFFSET, 1), %r10 + mov \PLAIN_CYPH_LEN, %r12 + READ_PARTIAL_BLOCK %r10 %r12 %xmm0 %xmm1 + + mov PBlockLen(%arg2), %r13 + +_data_read_\@: # Finished reading in data + + movdqu PBlockEncKey(%arg2), %xmm9 + movdqu HashKey(%arg2), %xmm13 + + lea SHIFT_MASK(%rip), %r12 + + # adjust the shuffle mask pointer to be able to shift r13 bytes + # r16-r13 is the number of bytes in plaintext mod 16) + add %r13, %r12 + movdqu (%r12), %xmm2 # get the appropriate shuffle mask + PSHUFB_XMM %xmm2, %xmm9 # shift right r13 bytes + +.ifc \operation, dec + movdqa %xmm1, %xmm3 + pxor %xmm1, %xmm9 # Cyphertext XOR E(K, Yn) + + mov \PLAIN_CYPH_LEN, %r10 + add %r13, %r10 + # Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling + sub $16, %r10 + # Determine if if partial block is not being filled and + # shift mask accordingly + jge _no_extra_mask_1_\@ + sub %r10, %r12 +_no_extra_mask_1_\@: + + movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 + # get the appropriate mask to mask out bottom r13 bytes of xmm9 + pand %xmm1, %xmm9 # mask out bottom r13 bytes of xmm9 + + pand %xmm1, %xmm3 + movdqa SHUF_MASK(%rip), %xmm10 + PSHUFB_XMM %xmm10, %xmm3 + PSHUFB_XMM %xmm2, %xmm3 + pxor %xmm3, \AAD_HASH + + cmp $0, %r10 + jl _partial_incomplete_1_\@ + + # GHASH computation for the last <16 Byte block + GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6 + xor %rax,%rax + + mov %rax, PBlockLen(%arg2) + jmp _dec_done_\@ +_partial_incomplete_1_\@: + add \PLAIN_CYPH_LEN, PBlockLen(%arg2) +_dec_done_\@: + movdqu \AAD_HASH, AadHash(%arg2) +.else + pxor %xmm1, %xmm9 # Plaintext XOR E(K, Yn) + + mov \PLAIN_CYPH_LEN, %r10 + add %r13, %r10 + # Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling + sub $16, %r10 + # Determine if if partial block is not being filled and + # shift mask accordingly + jge _no_extra_mask_2_\@ + sub %r10, %r12 +_no_extra_mask_2_\@: + + movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 + # get the appropriate mask to mask out bottom r13 bytes of xmm9 + pand %xmm1, %xmm9 + + movdqa SHUF_MASK(%rip), %xmm1 + PSHUFB_XMM %xmm1, %xmm9 + PSHUFB_XMM %xmm2, %xmm9 + pxor %xmm9, \AAD_HASH + + cmp $0, %r10 + jl _partial_incomplete_2_\@ + + # GHASH computation for the last <16 Byte block + GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6 + xor %rax,%rax + + mov %rax, PBlockLen(%arg2) + jmp _encode_done_\@ +_partial_incomplete_2_\@: + add \PLAIN_CYPH_LEN, PBlockLen(%arg2) +_encode_done_\@: + movdqu \AAD_HASH, AadHash(%arg2) + + movdqa SHUF_MASK(%rip), %xmm10 + # shuffle xmm9 back to output as ciphertext + PSHUFB_XMM %xmm10, %xmm9 + PSHUFB_XMM %xmm2, %xmm9 +.endif + # output encrypted Bytes + cmp $0, %r10 + jl _partial_fill_\@ + mov %r13, %r12 + mov $16, %r13 + # Set r13 to be the number of bytes to write out + sub %r12, %r13 + jmp _count_set_\@ +_partial_fill_\@: + mov \PLAIN_CYPH_LEN, %r13 +_count_set_\@: + movdqa %xmm9, %xmm0 + MOVQ_R64_XMM %xmm0, %rax + cmp $8, %r13 + jle _less_than_8_bytes_left_\@ + + mov %rax, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1) + add $8, \DATA_OFFSET + psrldq $8, %xmm0 + MOVQ_R64_XMM %xmm0, %rax + sub $8, %r13 +_less_than_8_bytes_left_\@: + movb %al, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1) + add $1, \DATA_OFFSET + shr $8, %rax + sub $1, %r13 + jne _less_than_8_bytes_left_\@ +_partial_block_done_\@: +.endm # PARTIAL_BLOCK + /* * if a = number of total plaintext bytes * b = floor(a/16) @@ -623,7 +773,6 @@ _get_AAD_done\@: movdqu AadHash(%arg2), %xmm\i # XMM0 = Y0 - xor %r11, %r11 # initialise the data pointer offset as zero # start AES for num_initial_blocks blocks movdqu CurCount(%arg2), \XMM0 # XMM0 = Y0 -- 2.9.5