Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp276225ybi; Fri, 24 May 2019 03:44:40 -0700 (PDT) X-Google-Smtp-Source: APXvYqzUo1BzljKdEEMnmVkDK06yOBH3hVqzjhpQ0DSQ8wSuBshc0gWRRxDxmMpaj9ZXv/dAGNW3 X-Received: by 2002:a63:4621:: with SMTP id t33mr103739671pga.246.1558694680445; Fri, 24 May 2019 03:44:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558694680; cv=none; d=google.com; s=arc-20160816; b=TPMu6mes4sJpkVcN0KVEJjA32XyEUkUWzS11hDgqnHKe4YnmiYatS0w/Z4yD87s5Pu u/65IE+hELC5n+hznbVoPYSiAkALtue4qAzF720+31PrbY5OKJPrKqBfgJ/0zdJujqbT /RZHhQGPQ/t94bw+/uyTCCHJmvCLxRk+TzquPaUmBavD8365UDElzFVVkoRSS8L5de8S 7NfBThgXqo0P5fHFeK1eoQleiCR4mMhRmX6jm1aa+NxDkZtMOzzG8SpeQbYqzBQSQ4EZ zOb9ruF/ipdYO0Z5MM0St+GQY9s1DBw3uoKNo6A/tljNT2wcLqcyzWSTAIe2YKQMfNxL FaCA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:cms-type :content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:from:cc:to:subject:dkim-signature :dkim-filter; bh=Co3KwE6OhgnHBO2mjrKcI196rNeBY2o1NPtUjUIXoGQ=; b=y/2TubFlp0lnag+vsu4FvEO1e5km7Prg3XCWd0q4ieSfZGnph84HIixf+6OqN4izCp Oom4uea7dsgs/8qWMS2yNm5FH5QXYS6+LuIJuU/n787VY1HveWHqYEarlkwSCuAPzK4+ SL6MXSRcoHYRV4LblI65VpKoXz21KgOtsDYumGjEcz/UxxNbzxSJ9YmQPht7iUqgvM7m gvlQnyhUSwDAL3SO+UP8y5FBy89Q4gM4YSwByn0/q7bH/QsXDvROJP8CHYtbLpcmonbs /mUAMHHPQr7qijVpJNKZogU+vEkYCO304xU1AAvNCktjaa8IDf42JP8q2+1x/BpoMMKA ITow== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@samsung.com header.s=mail20170921 header.b=oDEQbAZL; spf=pass (google.com: best guess record for domain of linux-crypto-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-crypto-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=samsung.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q9si3366951pfh.199.2019.05.24.03.44.21; Fri, 24 May 2019 03:44:40 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-crypto-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=@samsung.com header.s=mail20170921 header.b=oDEQbAZL; spf=pass (google.com: best guess record for domain of linux-crypto-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-crypto-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=samsung.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390657AbfEXKnq (ORCPT + 99 others); Fri, 24 May 2019 06:43:46 -0400 Received: from mailout1.w1.samsung.com ([210.118.77.11]:59091 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390578AbfEXKnq (ORCPT ); Fri, 24 May 2019 06:43:46 -0400 Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout1.w1.samsung.com (KnoxPortal) with ESMTP id 20190524104344euoutp013ad230e46aceacc68a7d2eb471aa262d~hmIDAdpHa2786127861euoutp01J for ; Fri, 24 May 2019 10:43:44 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20190524104344euoutp013ad230e46aceacc68a7d2eb471aa262d~hmIDAdpHa2786127861euoutp01J DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1558694624; bh=Co3KwE6OhgnHBO2mjrKcI196rNeBY2o1NPtUjUIXoGQ=; h=Subject:To:Cc:From:Date:In-Reply-To:References:From; b=oDEQbAZLm5+Kh9H2a4qV5fXlI2jtDpvyLZbIBQoOBiiFkNipLdsQF9sEGd+25kbjX 5md0JXNDLdyoDujbtRmG7W5OS9HmEvnbal1JoQp8ojJ8keTmEG6FNXRMB7rad4v6vy Pt7RQhMzEwffSKEjNmO5CuinpOPCPmFAjZEZlZx0= Received: from eusmges2new.samsung.com (unknown [203.254.199.244]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20190524104344eucas1p2d39cb3daa38f0e74fc3d2b0efac0d52c~hmICin3QA1736317363eucas1p2J; Fri, 24 May 2019 10:43:44 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges2new.samsung.com (EUCPMTA) with SMTP id ED.8E.04377.0EAC7EC5; Fri, 24 May 2019 11:43:44 +0100 (BST) Received: from eusmtrp1.samsung.com (unknown [182.198.249.138]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20190524104343eucas1p2035c2f0223826189ad0550ca18304e0d~hmIB32ubC1130611306eucas1p2a; Fri, 24 May 2019 10:43:43 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20190524104343eusmtrp168707c7ecba40ab6af1b3876cf0e7948~hmIBp4qHm1053010530eusmtrp1g; Fri, 24 May 2019 10:43:43 +0000 (GMT) X-AuditID: cbfec7f4-12dff70000001119-02-5ce7cae09063 Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id C0.C9.04140.FDAC7EC5; Fri, 24 May 2019 11:43:43 +0100 (BST) Received: from [106.120.51.18] (unknown [106.120.51.18]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20190524104343eusmtip104e4756c6aa13f15a6d2d397876dfcef~hmIBb3Qnq1836618366eusmtip1e; Fri, 24 May 2019 10:43:43 +0000 (GMT) Subject: Re: another testmgr question To: Pascal Van Leeuwen , Ard Biesheuvel Cc: Christophe Leroy , "linux-crypto@vger.kernel.org" From: Kamil Konieczny Message-ID: <1786cc8d-187d-e3ce-376b-e728263b1e68@partner.samsung.com> Date: Fri, 24 May 2019 12:43:42 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprKKsWRmVeSWpSXmKPExsWy7djPc7oPTj2PMXjwlsni/4fdjBYdzUwW 9+/9ZLLo2n2MxYHFo7X/B5tH55udrB53ru1h8/i8SS6AJYrLJiU1J7MstUjfLoEr49eWftaC LpaK69NXsTcwLmDuYuTkkBAwkXh0bhNTFyMXh5DACkaJM2+mskI4Xxgl1nSvZoFwPjNKzP/e zgTTsvrIRHaIxHJGiavzJzJDOG8ZJe5cPsQIUiUsoCpxcNpmFhBbRCBZ4mTbD7CFzAL5EkuO LgeLswmYSzzafgZsKq+Am8TnY+2sIDYLUO/yhhXsILaoQITE/WMbWCFqBCVOznwC1sspECtx deoyFoiZ4hK3nsxngrDlJba/nQN2kIRAN7vE5pc7WCHOdpH43nMF6mthiVfHt7BD2DISpyf3 sEDY5RJPF/axQzS3MEo8aP8IlbCWOHz8ItAgDqANmhLrd+mDmBICjhL7myUgTD6JG28FIU7g k5i0bTozRJhXoqNNCGKGrsS8/2egjpGW6Pq/jnUCo9IsJI/NQvLMLCTPzEJYu4CRZRWjeGpp cW56arFRXmq5XnFibnFpXrpecn7uJkZgYjn97/iXHYy7/iQdYhTgYFTi4X3Q+CxGiDWxrLgy 9xCjBAezkghv7H6gEG9KYmVValF+fFFpTmrxIUZpDhYlcd5qhgfRQgLpiSWp2ampBalFMFkm Dk6pBkZm7sVfbvQc2SC/3L8o7hGHur7ebg7FdQIixxh6DeTTj2mLbVXbsFFyZcC9+rRHa7Wi Hj5MnFfLxfvINeot35G/1yY2Fn2dnyzwYoplnLDthtKesIjgO3dn/vnz1ktk2fI407qnP6U/ bpqzpfuwpNcpbi7F6ODOt/OzLjX5W5pKTvkkLzDp6yYlluKMREMt5qLiRAB7OXppKAMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrJIsWRmVeSWpSXmKPExsVy+t/xu7r3Tz2PMehoF7H4/2E3o0VHM5PF /Xs/mSy6dh9jcWDxaO3/webR+WYnq8eda3vYPD5vkgtgidKzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DL+LWln7Wgi6Xi+vRV7A2MC5i7GDk5JARM JFYfmcjexcjFISSwlFHiSGsjO0RCWqLx9GomCFtY4s+1LjaIoteMElN2TQLrFhZQlTg4bTML iC0ikCwxc/I2sDizQL7E69etUA2X2SVmH1sHNpVNwFzi0fYzYFN5BdwkPh9rZwWxWYAGLW9Y AVYjKhAhceb9ChaIGkGJkzOfgNmcArESV6cuY4FYoC7xZ94lqGXiEreezGeCsOUltr+dwzyB UWgWkvZZSFpmIWmZhaRlASPLKkaR1NLi3PTcYiO94sTc4tK8dL3k/NxNjMBo2nbs55YdjF3v gg8xCnAwKvHwPmh8FiPEmlhWXJl7iFGCg1lJhDd2P1CINyWxsiq1KD++qDQntfgQoynQcxOZ pUST84GRnlcSb2hqaG5haWhubG5sZqEkztshcDBGSCA9sSQ1OzW1ILUIpo+Jg1OqgdG4q0Am 7XC13Pb9e92aFn7uTb8ZvMyJk9/sS5V4w/olaU2Hgs/MqVzp8OrHFj/ZGY3HZ73as0b3QqhP lc3MrhVXUzzecM36pb/mzzoZuZM7Tv+rL3Q/ptCe4/z/enhTdfqliyuv+4vmX1/ntaTntJyD vf/fE5ZNhm37JN9ksBzmX8N3x687/7USS3FGoqEWc1FxIgAP5IonvAIAAA== X-CMS-MailID: 20190524104343eucas1p2035c2f0223826189ad0550ca18304e0d X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20190524101331epcas3p2f26e2f0abe56056992646e798a26470c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190524101331epcas3p2f26e2f0abe56056992646e798a26470c References: <20190523185833.GA243994@google.com> <20190523200557.GA248378@gmail.com> <20190523234853.GC248378@gmail.com> <907eb6a5-dc76-d5ee-eccf-e7bd426a0868@c-s.fr> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On 24.05.2019 12:13, Pascal Van Leeuwen wrote: >> True. Those are the "other" reasons - besides acceleration - to use hardware >> offload which we often use to sell our IP. >> But the honest story there is that that only works out for situations >> where there's enough work to do to make the software overhead for actually >> starting and managing that work insignificant. [...] Hmm, is there any HW which support hash of zero-len message ? -- Best regards, Kamil Konieczny Samsung R&D Institute Poland