[CFRG] new draft modifying HPKE

Dan Harkins <dharkins@lounge.org> Mon, 14 June 2021 18:08 UTC

Return-Path: <dharkins@lounge.org>
X-Original-To: cfrg@ietfa.amsl.com
Delivered-To: cfrg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 535AA3A2CDE for <cfrg@ietfa.amsl.com>; Mon, 14 Jun 2021 11:08:09 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id V6fCEkAeEA4v for <cfrg@ietfa.amsl.com>; Mon, 14 Jun 2021 11:08:05 -0700 (PDT)
Received: from www.goatley.com (www.goatley.com [198.137.202.94]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3055F3A2CD7 for <cfrg@irtf.org>; Mon, 14 Jun 2021 11:08:05 -0700 (PDT)
Received: from trixy.bergandi.net (cpe-76-176-14-122.san.res.rr.com [76.176.14.122]) by wwwlocal.goatley.com (PMDF V6.8 #2433) with ESMTP id <0QUP0CXH2EDGMU@wwwlocal.goatley.com> for cfrg@irtf.org; Mon, 14 Jun 2021 13:08:04 -0500 (CDT)
Received: from blockhead.local ([69.12.173.8]) by trixy.bergandi.net (PMDF V6.7-x01 #2433) with ESMTPSA id <0QUP003FVEBNV3@trixy.bergandi.net> for cfrg@irtf.org; Mon, 14 Jun 2021 11:07:00 -0700 (PDT)
Received: from 69-12-173-8.static.dsltransport.net ([69.12.173.8] EXTERNAL) (EHLO blockhead.local) with TLS/SSL by trixy.bergandi.net ([10.0.42.18]) (PreciseMail V3.3); Mon, 14 Jun 2021 11:07:00 -0700
Date: Mon, 14 Jun 2021 11:08:03 -0700
From: Dan Harkins <dharkins@lounge.org>
To: cfrg@irtf.org
Message-id: <ac30b613-d9db-7d43-4e11-f82a880a41e0@lounge.org>
MIME-version: 1.0
Content-type: text/plain; charset=utf-8; format=flowed
Content-language: en-US
Content-transfer-encoding: 8BIT
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.7.1
X-PMAS-SPF: SPF check skipped for authenticated session (recv=trixy.bergandi.net, send-ip=69.12.173.8)
X-PMAS-External-Auth: 69-12-173-8.static.dsltransport.net [69.12.173.8] (EHLO blockhead.local)
X-PMAS-Software: PreciseMail V3.3 [210614] (trixy.bergandi.net)
X-PMAS-Allowed: system rule (rule allow header:X-PMAS-External noexists)
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/GDwTJGfD-FnsfgYigWJ3thJP6ZI>
Subject: [CFRG] new draft modifying HPKE
X-BeenThere: cfrg@irtf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
List-Unsubscribe: <https://www.irtf.org/mailman/options/cfrg>, <mailto:cfrg-request@irtf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cfrg/>
List-Post: <mailto:cfrg@irtf.org>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Subscribe: <https://www.irtf.org/mailman/listinfo/cfrg>, <mailto:cfrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Mon, 14 Jun 2021 18:08:09 -0000

   Hello,

   I know the cement on HPKE isn't quite dry yet but I wanted to get 
something ready
for when it is. As I've discussed on this list before I want to add 2 
things to HPKE:

   - compact output of the NIST curves
   - deterministic authenticated encryption

There's a new draft in the repository proposing just that:

     https://datatracker.ietf.org/doc/draft-harkins-cfrg-dnhpke/

Please take a look. Comments are welcome.

   Also, I implemented this in my HPKE code: 
https://github.com/danharkins/hpke-wrap.
The test vectors there are basically copied from the standard ones but I 
replaced
the KEM with the new KEM, compacted serialization, and encrypted with 
AES-SIV. I'd
welcome any attempts at interoperation.

   regards,

   Dan.

-- 
"The object of life is not to be on the side of the majority, but to
escape finding oneself in the ranks of the insane." -- Marcus Aurelius