IETF Logo Mail Archive

Re: [CFRG] HPKE and AEAD Authentication Tag Length

Christopher Wood <caw@heapingbits.net> Wed, 25 August 2021 00:25 UTC

Return-Path: <caw@heapingbits.net>
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 5F1A53A1AC2 for <cfrg@ietfa.amsl.com>; Tue, 24 Aug 2021 17:25:12 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.101
X-Spam-Level:
X-Spam-Status: No, score=-2.101 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=heapingbits.net header.b=jibHIuTS; dkim=pass (2048-bit key) header.d=messagingengine.com header.b=iArJDB6c
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 ACLmmdKfkMC9 for <cfrg@ietfa.amsl.com>; Tue, 24 Aug 2021 17:25:06 -0700 (PDT)
Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com [64.147.123.25]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 942A93A1ABC for <cfrg@irtf.org>; Tue, 24 Aug 2021 17:25:06 -0700 (PDT)
Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 48D153200A12 for <cfrg@irtf.org>; Tue, 24 Aug 2021 20:25:04 -0400 (EDT)
Received: from imap41 ([10.202.2.91]) by compute5.internal (MEProxy); Tue, 24 Aug 2021 20:25:04 -0400
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heapingbits.net; h=mime-version:message-id:in-reply-to:references:date:from:to :subject:content-type; s=fm2; bh=uxN62DQLgfVHJWTW7+GGGVErL+il7NB fwC2BxMjYpg4=; b=jibHIuTSSHf2UyymtJDgPu0pe+L+mivQoagjUrqocijLrwG S4SGHZAmJ+QTYJTIucRvf3YlFxyzYZa8fi6jfM/RK6XuisuecUAkXeGpi7E2wWeU GyENiS1Yt6RBYBrj9+17wN14lBfMk4hCJsSX2z6CYTT0ddtyTdyrJs67lq5N2Hlc m01wYYUQ6uR0g4QsYJ7yXsxEhc3QM6Hk6UgoyVN4FL/eVTsd/T6aY5Owqd8Gd+V1 FWpK/dQX5gNIXawhHooU0Vg6txX6PQnXuemAqP1oGNuvmgOBXf/KjDOu8M55gRNE Gn0KQLklbeaG2JpKfX/2Ru0flNboJaH6SlXR8Mw==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=uxN62D QLgfVHJWTW7+GGGVErL+il7NBfwC2BxMjYpg4=; b=iArJDB6cEqD5s0PGYzN3jN Xolx+F71M6VhLI3rd8Yr2wPKXpxyLDTK3+F1CtbQO7Je9d6o+w3HpaM2N7kuEoYB eW1f/CLeSFw+wnPMZZdBkp+e47V4w15YlJDOKOGrcDnuspi9nXbs0glkM713t4aE K3aB6P7WmuXdfvEjhPvH0TeVVgu5Xl53Xya+RtyCJ/fdPD4MzfHbREsO5qJs7Oee RDn0FELy4lATjY09/ne6ZDlOGaBuO2/9k/NSfMUI/ArEJOQW81u82cLLT/Olde7X xIn3WgqJlDhbGND2eO/vhBnFYFITdUiga/YRixTdpkbdPEzwjP1gRFLwhz+vMxEg ==
X-ME-Sender: <xms:340lYVcxeZNrFF78kEXP5z_HL6f35UawG3XLXQH9y-mjEk2r6T77TQ> <xme:340lYTNIGOOihSk68vb0L_WGPBBLje2PZvZpWhrs28cE4aJjEqYuL0Rvbte1QxjDi WgD5LPXho6_IQc1HKg>
X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddruddtkedgfeefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefofgggkfgjfhffhffvufgtsehttd ertderredtnecuhfhrohhmpedfvehhrhhishhtohhphhgvrhcuhghoohgufdcuoegtrgif sehhvggrphhinhhgsghithhsrdhnvghtqeenucggtffrrghtthgvrhhnpeeludduhefhgf ekjefggeelvdfggfekfeeugeegueejfeehhfehtdelleefhfejleenucffohhmrghinhep ghhithhhuhgsrdgtohhmpdhirhhtfhdrohhrghenucevlhhushhtvghrufhiiigvpedtne curfgrrhgrmhepmhgrihhlfhhrohhmpegtrgifsehhvggrphhinhhgsghithhsrdhnvght
X-ME-Proxy: <xmx:340lYejnmEKCcJgcSk-ZtiFc5qr_lst6-KGCG2rEgwL-yf6SyCkaZA> <xmx:340lYe-ZOPoBX1h1eryMC2If8Y-3jqSLgbeM8ZX0mf2y3Yia_l7q0A> <xmx:340lYRsJ_srNX599xaINxW3M10Z5qdrnNfNcQu3AkfYv5n8-QP3XTA> <xmx:340lYf7PJ_-kXRejHMVG1PJZZ8VpdeDtdQdFN4tPJ-eNTGfOhWFu2g>
Received: by mailuser.nyi.internal (Postfix, from userid 501) id 827143C0F62; Tue, 24 Aug 2021 20:25:03 -0400 (EDT)
X-Mailer: MessagingEngine.com Webmail Interface
User-Agent: Cyrus-JMAP/3.5.0-alpha0-1124-g8f1c7cb9de-fm-20210824.001-g8f1c7cb9
Mime-Version: 1.0
Message-Id: <755ed6b6-6928-4962-b2a9-f7db4199122b@www.fastmail.com>
In-Reply-To: <CAOgPGoBK9Lq0D+ufJRYowXPcKJuT8gf81ZpJ0=RZzG8-f0=fpQ@mail.gmail.com>
References: <CAOgPGoBK9Lq0D+ufJRYowXPcKJuT8gf81ZpJ0=RZzG8-f0=fpQ@mail.gmail.com>
Date: Tue, 24 Aug 2021 17:24:43 -0700
From: Christopher Wood <caw@heapingbits.net>
To: cfrg@irtf.org
Content-Type: text/plain
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/HeHDw4hO5N_ERMVJDg16buf0D6U>
Subject: Re: [CFRG] HPKE and AEAD Authentication Tag Length
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: Wed, 25 Aug 2021 00:25:13 -0000

Thanks, Joe! This is a fine clarification. We merged the PR.

Best,
Chris

On Mon, Aug 23, 2021, at 11:52 AM, Joseph Salowey wrote:
> In working on a Java HPKE implementation I found that specification 
> does not specify anything about the authentication tag length for the 
> AEAD cipher.  I opened issue #283 
> <https://github.com/cfrg/draft-irtf-cfrg-hpke/issues/238> and proposed 
> PR 239 <https://github.com/cfrg/draft-irtf-cfrg-hpke/pull/239> to 
> address this.  
> 
> Cheers,
> 
> Joe
> _______________________________________________
> CFRG mailing list
> CFRG@irtf.org
> https://www.irtf.org/mailman/listinfo/cfrg
>

v2.23.0 | Report a Bug | By Email