Re: [Teep] draft-tschofenig-teep-otrp-v2-00

Hannes Tschofenig <Hannes.Tschofenig@arm.com> Tue, 09 July 2019 14:35 UTC

Return-Path: <Hannes.Tschofenig@arm.com>
X-Original-To: teep@ietfa.amsl.com
Delivered-To: teep@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 95D7412018F for <teep@ietfa.amsl.com>; Tue, 9 Jul 2019 07:35:22 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=armh.onmicrosoft.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 ezNyCBqpjtFw for <teep@ietfa.amsl.com>; Tue, 9 Jul 2019 07:35:18 -0700 (PDT)
Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-eopbgr80041.outbound.protection.outlook.com [40.107.8.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AA21612018C for <teep@ietf.org>; Tue, 9 Jul 2019 07:35:11 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=OQiLDB+o9bpqa6555h/Ew8nhoPf8ymkx3L+MqG1IheI=; b=BSrU5cIZXaU1SXcMpEOzIYoRSgLIpqg9MSl4SKDNtWLGDt1IonnsxkaXC5sLicR5qu97hSeSITff7Cprwhd6m+k34sYGKsEFIXd56aeuwoy0WLL15ZKVV3nggZvamm0suO1KGd8Wfs6J6TqitMom7Kw2zwuLISFcCwev7aKRhmk=
Received: from VI1PR08MB5360.eurprd08.prod.outlook.com (52.133.244.88) by VI1PR08MB2847.eurprd08.prod.outlook.com (10.170.236.159) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2052.20; Tue, 9 Jul 2019 14:35:08 +0000
Received: from VI1PR08MB5360.eurprd08.prod.outlook.com ([fe80::9ce0:faf4:980d:dc77]) by VI1PR08MB5360.eurprd08.prod.outlook.com ([fe80::9ce0:faf4:980d:dc77%3]) with mapi id 15.20.2052.020; Tue, 9 Jul 2019 14:35:08 +0000
From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Jeremy O'Donoghue <jodonogh@qti.qualcomm.com>
CC: "teep@ietf.org" <teep@ietf.org>
Thread-Topic: [Teep] draft-tschofenig-teep-otrp-v2-00
Thread-Index: AdU2MM7rokbHdeT7SSOyoNhR4EHtYAAH8jqAAASstgA=
Date: Tue, 09 Jul 2019 14:35:08 +0000
Message-ID: <VI1PR08MB5360624BA6A4017BABB6CED8FAF10@VI1PR08MB5360.eurprd08.prod.outlook.com>
References: <VI1PR08MB536037A16BACD104800B358FFAF10@VI1PR08MB5360.eurprd08.prod.outlook.com> <0C71A429-5E8B-4A12-9162-01B688FD8ADD@qti.qualcomm.com>
In-Reply-To: <0C71A429-5E8B-4A12-9162-01B688FD8ADD@qti.qualcomm.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-ts-tracking-id: c68365f6-99ca-4e5a-b894-630122029338.1
x-checkrecipientchecked: true
authentication-results: spf=none (sender IP is ) smtp.mailfrom=Hannes.Tschofenig@arm.com;
x-originating-ip: [80.92.119.152]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: eaae9a7c-39aa-4638-d9d5-08d7047aa45c
x-ms-office365-filtering-ht: Tenant
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020); SRVR:VI1PR08MB2847;
x-ms-traffictypediagnostic: VI1PR08MB2847:
x-microsoft-antispam-prvs: <VI1PR08MB28471218FFF05C83EA206148FAF10@VI1PR08MB2847.eurprd08.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:9508;
x-forefront-prvs: 0093C80C01
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(346002)(39860400002)(136003)(396003)(366004)(376002)(40434004)(189003)(199004)(53754006)(4326008)(26005)(7696005)(66556008)(86362001)(316002)(102836004)(53546011)(186003)(6506007)(81166006)(81156014)(8676002)(5660300002)(52536014)(9326002)(6916009)(76176011)(66476007)(68736007)(73956011)(76116006)(66946007)(71200400001)(71190400001)(99286004)(66446008)(64756008)(236005)(9686003)(446003)(476003)(229853002)(72206003)(6436002)(74316002)(478600001)(2906002)(33656002)(7736002)(66066001)(25786009)(486006)(11346002)(790700001)(55016002)(53936002)(6116002)(256004)(3846002)(8936002)(5024004)(14444005)(14454004)(6306002)(54896002)(6246003); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR08MB2847; H:VI1PR08MB5360.eurprd08.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts)
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam-message-info: nOQdDNpX9nh24OqO3zj7akI2NTTnIFUgvkvf0qip3au8+SX2LMEHr4+hVkV/akwANkiHl5yFuK02Z6I0tKEMi6O8eRCHwE9lSzI993lqEEs/Am97TEnDI89qrPyp4FPsbNSZIDmxtpTMHusggQ6jU8nwcdAyrSAl9RLDT8+hNh2vbWE8RXIATM6mY5h+jHWbtgGEbOhEcc8N1rtWbEEUNTlBDrj98b1xNSqCYbDNQRR8G48tUJEsn1A+y3v/g8SJaGCsExQNMD8xMsAkO7PuQYjEGhqqjpxjV30QdYV88ZkLDzaXTisTXMWYqjoTaP+fSfH19fCoHB+Ry9GpNGEpOQhdkkNFrden7AK4CAQBEfi4OmnO5Dp1JuyZgSSnTa3kyMvHZMc4U0QPBBl+jfIEh5gF1ifBSxkCxOOKWCmDMQI=
Content-Type: multipart/alternative; boundary="_000_VI1PR08MB5360624BA6A4017BABB6CED8FAF10VI1PR08MB5360eurp_"
MIME-Version: 1.0
X-OriginatorOrg: arm.com
X-MS-Exchange-CrossTenant-Network-Message-Id: eaae9a7c-39aa-4638-d9d5-08d7047aa45c
X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jul 2019 14:35:08.4682 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: Hannes.Tschofenig@arm.com
X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB2847
Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/WRyhRB3upiX1bFXqHYysOW38rq0>
Subject: Re: [Teep] draft-tschofenig-teep-otrp-v2-00
X-BeenThere: teep@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement <teep.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/teep>, <mailto:teep-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/teep/>
List-Post: <mailto:teep@ietf.org>
List-Help: <mailto:teep-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/teep>, <mailto:teep-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Jul 2019 14:35:23 -0000

Hi Jeremy,

using a different name (instead of a different version number) is also an option, indeed.

Ciao
Hannes

From: Jeremy O'Donoghue <jodonogh@qti.qualcomm.com>
Sent: Dienstag, 9. Juli 2019 16:20
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Cc: teep@ietf.org
Subject: Re: [Teep] draft-tschofenig-teep-otrp-v2-00

Hi all,

On 9 Jul 2019, at 09:46, Hannes Tschofenig <hannes.tschofenig@arm.com<mailto:hannes.tschofenig@arm.com>> wrote:
We put together a draft about what I would call version 2 of the OTrP protocol. Why version 2?

As you know, there is some work in Global Platform standardizing the version we have been working on so far in the group.
However, based on the design decisions made so far we are breaking backwards compatibility. We need to distinguish the two versions somehow.

Given the loss of backward compatibility with OTrP v1, I wonder whether it makes sense to change the name. I don’t believe it serves anyone well to have two rather different standards (hence non-interoperable based on them) under the OTrP name.

Given that IETF is trying to achieve something quite different than GlobalPlatform with Teep (and very successfully, to judge by progress so far), I believe there would be benefit in differentiating the Tee work product from existing standards.

Best regards
Jeremy
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.