From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI shortcircuit=no autolearn=ham autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 74CA11F404 for ; Wed, 29 Aug 2018 12:55:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728482AbeH2Qvr (ORCPT ); Wed, 29 Aug 2018 12:51:47 -0400 Received: from mail-qk0-f196.google.com ([209.85.220.196]:42693 "EHLO mail-qk0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727452AbeH2Qvr (ORCPT ); Wed, 29 Aug 2018 12:51:47 -0400 Received: by mail-qk0-f196.google.com with SMTP id g13-v6so3231731qki.9 for ; Wed, 29 Aug 2018 05:54:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=NREsrJPobsiZFmAsxiMF1wOGK4rdPy9GW/KREEhk3Lk=; b=WeBcbVPlfU1F8l5eyKovZWSsHFxAQYBZGsV3fuuFoYBncqBZORXMRSnooG3ISA0+9R Yl+Tofuz/2bTLga9s0RUC3kF2zrsDTezEg7UW/Wpmk4xCe5If/5fiDETs88THmPYFyRj zeQYfW2FG9KnZ/VTVVLn8VFUEt3IvAWpVh9duEmZFOiC7M5K8Spvxa6OqB7hG3rgQhUt dYM79jfZzQZdE3TUs7mLpXmGxSGp3p1JrvBS02djtKNp2t13pMyYlNtn/5nSgYTQOiU1 R6Av9Xwf5l7UsA1OrSy7HQkRKh7vwGOC6uFeBLrCaXfUZx/W1WOZIFjRJgAfrj1PFHb1 OSOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=NREsrJPobsiZFmAsxiMF1wOGK4rdPy9GW/KREEhk3Lk=; b=AuwQEfrnA4HG4bJJR4UmzHtnhE76SEjuDmLKoazVuuEsja5AOkUitZrAlPxi6imrXW lYjfo8pdNzMVo388tjJ0gTGLwqu2FORnEJNHBm77O0sApVdXWK6CFPF/TOSh4H9EBciA dhjj0u2pIfGL8JrJnHn11uxiAS0JoWrfnv4rV0NMgBLEcmwkPE8sQFeayevc1eWNYEhS dd7GXGp3ypif60Al4iauF5KkNBJLSxdYXzznPzSoJtaYkZUQe0QrYBdCxrs1bhnpKkqB NgwS2LytYi240U5+chgrHSjezKDGjNjq47ev0BFFV+Wbrtv0AEeLnsY7LBXq0yZXJgaX 1EIQ== X-Gm-Message-State: APzg51DcykgK6fIFcMSqeIYsGD7UAmHNIZFGjGP2ynvbQWZ5Iivzf57e VB8/iWwM0XMoU/04KV8/A9ObO+fg39U= X-Google-Smtp-Source: ANB0VdaqYI6NuH+kMtwt6WYaVjpVZ+SaZSM2IBvLOXde9mjfuMguRtnOShK1pDhmgjUdrFyZfXxBcw== X-Received: by 2002:a37:7707:: with SMTP id s7-v6mr6215115qkc.308.1535547297827; Wed, 29 Aug 2018 05:54:57 -0700 (PDT) Received: from ?IPv6:2001:4898:6808:13e:f86b:1660:ae35:a1de? ([2001:4898:8010:0:e1a1:1660:ae35:a1de]) by smtp.gmail.com with ESMTPSA id g13-v6sm2144859qkm.11.2018.08.29.05.54.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 29 Aug 2018 05:54:57 -0700 (PDT) Subject: Re: [RFC PATCH 09/12] Add a base implementation of SHA-256 support To: "brian m. carlson" , git@vger.kernel.org References: <20180829005857.980820-1-sandals@crustytoothpaste.net> <20180829005857.980820-10-sandals@crustytoothpaste.net> From: Derrick Stolee Message-ID: <7b1aac2e-b768-cfec-2dfe-61f63066ae1a@gmail.com> Date: Wed, 29 Aug 2018 08:54:56 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: <20180829005857.980820-10-sandals@crustytoothpaste.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org On 8/28/2018 8:58 PM, brian m. carlson wrote: > SHA-256 is somewhat slower to compute than SHA-1 in software. However, > since our default SHA-1 implementation is collision-detecting, a > reasonable cryptographic library implementation of SHA-256 will actually > be faster than SHA-256. Nit: do you mean "faster than SHA-1DC"?