From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 13166 invoked from network); 27 May 2020 20:23:39 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 27 May 2020 20:23:39 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id A046D9C93A; Thu, 28 May 2020 06:23:34 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 281429C5E8; Thu, 28 May 2020 06:23:21 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="U/YTNAgd"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 808F89C5E8; Thu, 28 May 2020 06:23:19 +1000 (AEST) Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) by minnie.tuhs.org (Postfix) with ESMTPS id BF4099C5E5 for ; Thu, 28 May 2020 06:23:18 +1000 (AEST) Received: by mail-lj1-f181.google.com with SMTP id m18so30542566ljo.5 for ; Wed, 27 May 2020 13:23:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=4yxw/yDW8gPYeXnXxx4bAbG3vKS+loxSz5gu9jE4zFA=; b=U/YTNAgd7V3MJd1MIWL8I/lW1RrB/8GT1kGeUYuUYPGF6KyaUCUiFA8PXZKaKYqLAc vf2naONOlw8paJVUGVdLDrwi9K1a2VyFHuCwNSc0phql0CTrcFj+w0bFLLDp6mzPtU+Y RxAa8oRTGluH0iIhi6Am2eszqmAXAMEKVwpqBEwQ2jcl6e+s5OjLMYS6b1c5RjA6iBZq 9Ev7VEg2RToa5wpRnS9b1tH1LNx1cMWMWYu8pGhXznC5q16vKVQM+R0xhketSEQr1BDL BTXjbQgSuVSAm3JkPjKNohZ2YVYLASFLH5hb/Hn7a4hTIdsdJfSLQ+KVSEC5BPWOLQ8M 9Rvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=4yxw/yDW8gPYeXnXxx4bAbG3vKS+loxSz5gu9jE4zFA=; b=sJZbFN0fvmFUM2el5Ryr9KP86qKijOsWH8ZTbp7cfrweAiefZLEPdmei7MAVv1pS0d JcMb2PNX4feSfMDiRQDmperHwtf9YiBxoA3dbUREW+E/lO+ko2kIWCOcBOCVLcaSgqgB lDqj/6yjWvTvEl6eFYoZ4G7N3pK4HjOpydxBxTq3OEtaRaRljX3iKXpaEF993iLHz0tD a3RoCH/70QRUKNxhV7il3P4G5IJ+5H/ohRcGnpVH5c/iSiqtZs3XgmtlcKXaovu7Xhfq Vbzc8QvLA67qDGkj3WWAd7ea4CpTscHqHFRag6qa+0zO5dWK9tr6IfkwntSWiO1Bb6+y S5DA== X-Gm-Message-State: AOAM5303uouM0LNDR34mFR6LiXheFCoS6ysT5IOQwRWlYzTGigvCxDXB lQDnZ4mmFdDZFfc7yvaSFzYfGPc8H3JgcGgyM2G4ZA== X-Google-Smtp-Source: ABdhPJz5dJNzrNrYKYRA6E5Tb+Hu2Y+CALTGOv6SnBo2U4QqsdJTgIJP107Pt5x7uJmQUTGPF+YckU8O/wxpr2RwNM4= X-Received: by 2002:a2e:8455:: with SMTP id u21mr2151813ljh.237.1590610997048; Wed, 27 May 2020 13:23:17 -0700 (PDT) MIME-Version: 1.0 References: <95e6e8de901c837a28b84e62556ba326@firemail.de> <20200527201347.GY22882@mcvoy.com> In-Reply-To: <20200527201347.GY22882@mcvoy.com> From: Richard Salz Date: Wed, 27 May 2020 16:23:04 -0400 Message-ID: To: Larry McVoy Content-Type: multipart/alternative; boundary="00000000000074784d05a6a6fbb5" Subject: Re: [TUHS] History of popularity of C X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Unix Heritage Society mailing list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --00000000000074784d05a6a6fbb5 Content-Type: text/plain; charset="UTF-8" Places where I've seen it, crypto code in OpenSSL. Trying to zero-ize key material, the compiler sees that "char key[]" isn't used any more, and optimizes-away the memcmp. Trying to do constant-time math. --00000000000074784d05a6a6fbb5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Places where I've seen it, crypto code in OpenSSL= .

Trying to zero-ize key material, the compiler se= es that "char key[]" isn't used any more, and optimizes-away = the memcmp.

Trying to do constant-time math.
=

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