From patchwork Sun Dec 13 01:05:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "brian m. carlson" X-Patchwork-Id: 11970413 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ECD7CC4361B for ; Sun, 13 Dec 2020 01:10:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BBFE922AEC for ; Sun, 13 Dec 2020 01:10:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390939AbgLMBKQ (ORCPT ); Sat, 12 Dec 2020 20:10:16 -0500 Received: from injection.crustytoothpaste.net ([192.241.140.119]:59318 "EHLO injection.crustytoothpaste.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726074AbgLMBKQ (ORCPT ); Sat, 12 Dec 2020 20:10:16 -0500 Received: from camp.crustytoothpaste.net (unknown [IPv6:2001:470:b978:101:b610:a2f0:36c1:12e3]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by injection.crustytoothpaste.net (Postfix) with ESMTPSA id BE37860769 for ; Sun, 13 Dec 2020 01:09:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=crustytoothpaste.net; s=default; t=1607821745; bh=h8LvH2246cp+NNm3rM4BehuSR7DuJXRDgUrNabKN5sY=; h=From:To:Subject:Date:From:Reply-To:Subject:Date:To:CC:Resent-Date: Resent-From:Resent-To:Resent-Cc:In-Reply-To:References: Content-Type:Content-Disposition; b=t3FfH516BzAe3DhMQRZ2G6pqILOMt2yfxzijvfxbyiLSdNfW1gWQ17AjWomb8GRHw MzKbwYfF549XRYD8g+ft08qhuJoKGV0r27NDEb+t9Lhk5sOmCucWZdPeGFeDmHmquL HfVfMk40qGObp/o/BgKp1Ajh81XNeC0be5JFTelfxlOZ+CWnoLfQpkHSqF+ktdjF81 yGhXi5B1UiLer3jVdZSQqUYZV4JB5IOFwwJRvnPL/izTGA8iaYqqx1duRgIHyDteNr KYA5nietO5NAUabAaYDERpurFgsSBPkcJEWrdTGHYY0vGfM25koTU10WHafKjsXC8M WbNzDtF1Dkty5fNdDLPUdwAY6tO0Wc2d5+xpx1w2gDICBoYlXC1jQEtuxWVw1x+kBr 6H2jtEb0cWUOODtCS1zQHn09llMJ08QlOvnUXVhfVEpL2Zsv7ijioEwgBnbl6v+azb Y4pgs0ikwdhTF6fRkKdOaDj0x5DYF+453SQlf170NO84umaOXo/ From: "brian m. carlson" To: Subject: [PATCH 0/1] Hashed mailmap support Date: Sun, 13 Dec 2020 01:05:38 +0000 Message-Id: <20201213010539.544101-1-sandals@crustytoothpaste.net> X-Mailer: git-send-email 2.29.2.222.g5d2a92d10f8 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Many people, through the course of their lives, will change either a name or an email address. For this reason, we have the mailmap, to map from a user's former name or email address to their current, canonical forms. Normally, this works well as it is. However, sometimes people change a name (or an email) and want to completely cease use of the former name or email. This could be because a transgender person has transitioned, because a person has left an abusive partner or broken ties with an abusive family member, or for any other number of good and valuable reasons. In these cases, placing the former name in the .mailmap may be undesirable. For those situations, let's introduce a hashed mailmap, where the user's former name or email address can be in the form @sha256:. This obscures the former name or email. Note that this is not perfect, because a user can simply look up all the hashed values and find out the old values. However, for projects which wish to adopt the feature, it can be somewhat effective to hash all existing mailmap entries and include some no-op entries from other contributors as well, so as to make this process less convenient. I've spoken to a variety of folks about this, and while we all agree this design isn't perfect, it is an improvement over the status quo. It is obfuscation, not security, and in this case, I think that's fine. I'm open to hearing ideas about how to improve this design if there are any. I welcome feedback on this patch, while encouraging people to be mindful of our code of conduct. brian m. carlson (1): mailmap: support hashed entries in mailmaps mailmap.c | 39 +++++++++++++++++++++++++++++++++++++-- t/t4203-mailmap.sh | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 72 insertions(+), 2 deletions(-)