IETF Logo Mail Archive

Re: [CFRG] RSA PSS Salt Length for HTTP Message Signatures

"Salz, Rich" <rsalz@akamai.com> Fri, 28 May 2021 13:20 UTC

Return-Path: <rsalz@akamai.com>
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 62D023A28A5 for <cfrg@ietfa.amsl.com>; Fri, 28 May 2021 06:20:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.794
X-Spam-Level:
X-Spam-Status: No, score=-2.794 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.698, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_NONE=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=akamai.com
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 aJpjKP2TU_BN for <cfrg@ietfa.amsl.com>; Fri, 28 May 2021 06:20:30 -0700 (PDT)
Received: from mx0b-00190b01.pphosted.com (mx0b-00190b01.pphosted.com [IPv6:2620:100:9005:57f::1]) (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 AB3093A28A4 for <cfrg@irtf.org>; Fri, 28 May 2021 06:20:30 -0700 (PDT)
Received: from pps.filterd (m0050102.ppops.net [127.0.0.1]) by m0050102.ppops.net-00190b01. (8.16.0.43/8.16.0.43) with SMTP id 14SDAn3d012843; Fri, 28 May 2021 14:20:28 +0100
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=akamai.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-id : content-transfer-encoding : mime-version; s=jan2016.eng; bh=Zu6wVORx0eNMeK1suImFSomXq4cGBpeqhkJzTAqudBg=; b=GajW/cCFBNWw0zExbz3rI54PVD68pM6+PaBmAISLPAmlF5EgNc/bBNlEjCwEkfIm69+S prWUWMxIPw0aXHOh2F8SeJ1dnO0wU+OtxMbCtCJAiXTea8JcdF3uF4iCSDU/iXd1lfYc KqACLxkcNcEyDgytoHCSL+Bt9cd1ePpME998uXVh47gky+NIXRFaUNAsnEwk5r4+hv+5 64YNnQlG6y6XrYUasfOZG+hFxZrDtHMUesmhetoUflOdk1daEmo6QtS/E/tIN6VP1FpQ 1R1Y0t8SdQPRXmiW6s4AdYRvFcyArlYpYL+XobWz3l0qesaCDjyTnPg6F2eiwS4Qz2y0 9g==
Received: from prod-mail-ppoint4 (a72-247-45-32.deploy.static.akamaitechnologies.com [72.247.45.32] (may be forged)) by m0050102.ppops.net-00190b01. with ESMTP id 38u0k8a25y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 May 2021 14:20:27 +0100
Received: from pps.filterd (prod-mail-ppoint4.akamai.com [127.0.0.1]) by prod-mail-ppoint4.akamai.com (8.16.1.2/8.16.1.2) with SMTP id 14SDJvaH009272; Fri, 28 May 2021 09:20:26 -0400
Received: from email.msg.corp.akamai.com ([172.27.165.114]) by prod-mail-ppoint4.akamai.com with ESMTP id 38tyuggy22-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Fri, 28 May 2021 09:20:26 -0400
Received: from USTX2EX-DAG1MB1.msg.corp.akamai.com (172.27.165.119) by ustx2ex-dag1mb6.msg.corp.akamai.com (172.27.165.124) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Fri, 28 May 2021 08:05:20 -0500
Received: from USTX2EX-DAG1MB1.msg.corp.akamai.com ([172.27.165.119]) by ustx2ex-dag1mb1.msg.corp.akamai.com ([172.27.165.119]) with mapi id 15.00.1497.018; Fri, 28 May 2021 08:05:20 -0500
From: "Salz, Rich" <rsalz@akamai.com>
To: Benjamin Kaduk <kaduk@mit.edu>, Brian Smith <brian@briansmith.org>
CC: IRTF CFRG <cfrg@irtf.org>, Russ Housley <housley@vigilsec.com>, Justin Richer <jricher@mit.edu>
Thread-Topic: [CFRG] RSA PSS Salt Length for HTTP Message Signatures
Thread-Index: AQHXUnAvqLkAEgqnB0OGVKflJ0MxYKr2neCAgAGtcgCAAAJXAIAAonEA
Date: Fri, 28 May 2021 13:05:18 +0000
Message-ID: <67015DB5-A45F-41C7-A236-C54DEB30DD8F@akamai.com>
References: <1EED8807-C5C5-461F-BE60-34C44791849E@mit.edu> <1BF68544-CB14-4A60-88BB-4E80E2D9A094@vigilsec.com> <CAFewVt54d6NGEYOX6Tx=gMf+p9NqTVkb9VkRxr+VZL5eDSmhmA@mail.gmail.com> <20210527232354.GY32395@kduck.mit.edu>
In-Reply-To: <20210527232354.GY32395@kduck.mit.edu>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/16.49.21050901
x-ms-exchange-messagesentrepresentingtype: 1
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [172.27.118.139]
Content-Type: text/plain; charset="utf-8"
Content-ID: <827EC619FC05B24D949616789A7793AB@akamai.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-28_04:2021-05-27, 2021-05-28 signatures=0
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 mlxscore=0 spamscore=0 bulkscore=0 suspectscore=0 malwarescore=0 mlxlogscore=487 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105280089
X-Proofpoint-ORIG-GUID: kAfByAuu_JDmUIaFi5DxlZIJTGOJthc9
X-Proofpoint-GUID: kAfByAuu_JDmUIaFi5DxlZIJTGOJthc9
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-28_04:2021-05-27, 2021-05-28 signatures=0
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 mlxlogscore=430 mlxscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 clxscore=1011 impostorscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105280088
X-Agari-Authentication-Results: mx.akamai.com; spf=${SPFResult} (sender IP is 72.247.45.32) smtp.mailfrom=rsalz@akamai.com smtp.helo=prod-mail-ppoint4
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/QaJ19LdVJpEn3yk1HasRooJWZvI>
Subject: Re: [CFRG] RSA PSS Salt Length for HTTP Message Signatures
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: Fri, 28 May 2021 13:20:35 -0000

Perhaps reconsider PSS.  https://www.metzdowd.com/pipermail/cryptography/2019-November/035449.html is excellent reading.

v2.20.3 | Report a Bug | By Email