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Tue, 3 Mar 2020 10:05:42 +0000 From: Hannes Tschofenig To: teep Thread-Topic: Remote Hackathon for IETF#107 ? 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X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Mar 2020 10:06:00 -0000 --_000_AM0PR08MB37167A17C783F077CC8498A3FAE40AM0PR08MB3716eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable FYI: An idea from the RATS guys below From: Hannes Tschofenig Sent: Tuesday, March 3, 2020 11:05 AM To: rats@ietf.org Subject: Remote Hackathon for IETF#107 ? Hi all, at the RATS virtual interim meeting yesterday the chairs suggested to consi= der organizing a remote hackathon on the weekend before IETF#107 (because several contributors cannot attend the meeting in person). This is an interesting idea and could be a continuation of the hackathon in= Berlin. I think we should give it a try. We have a communication platform with Webex and the hardware is also not an= issue because many of you already have a board (either from previous hacka= thons or from other projects). The biggest challenge is the timezone difference but there is very little w= e can do about it. Some folks will join later and others will leave earlier= . It is what it is. Should we try to allocate March 20th and March 21st as a date for the hacka= thon, create a webex and an Etherpad, and prepare for coding in the area of= RATS, SUIT, and TEEP? We could do two status updates (one on Saturday and the other one on Sunday= ). What do you think? Ciao Hannes IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease 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. --_000_AM0PR08MB37167A17C783F077CC8498A3FAE40AM0PR08MB3716eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

FYI: An idea from the RATS guys below

 

From: Hannes Tschofenig
Sent: Tuesday, March 3, 2020 11:05 AM
To: rats@ietf.org
Subject: Remote Hackathon for IETF#107 ?

 

Hi all,

 

at the RATS virtual interim meeting yesterday the ch= airs suggested to consider organizing a remote hackathon on the weekend bef= ore IETF#107

(because several contributors cannot attend the meet= ing in person).

 

This is an interesting idea and could be a continuat= ion of the hackathon in Berlin.

I think we should give it a try.

 

We have a communication platform with Webex and the = hardware is also not an issue because many of you already have a board (eit= her from previous hackathons or from other projects).

The biggest challenge is the timezone difference but= there is very little we can do about it. Some folks will join later and ot= hers will leave earlier. It is what it is.

 

Should we try to allocate March 20th and = March 21st as a date for the hackathon, create a webex and an Et= herpad, and prepare for coding in the area of RATS, SUIT, and TEEP?

We could do two status updates (one on Saturday and = the other one on Sunday).

 

What do you think?

 

Ciao

Hannes

IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease 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. --_000_AM0PR08MB37167A17C783F077CC8498A3FAE40AM0PR08MB3716eurp_-- From nobody Tue Mar 3 08:13:13 2020 Return-Path: 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 A3E9B3A22E4; Tue, 3 Mar 2020 08:13:11 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.888 X-Spam-Level: X-Spam-Status: No, score=-1.888 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, T_SPF_PERMERROR=0.01, 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 P8FX36PwZQY0; Tue, 3 Mar 2020 08:13:08 -0800 (PST) Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 727643A22EE; Tue, 3 Mar 2020 08:13:08 -0800 (PST) Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id 9568C3897F; Tue, 3 Mar 2020 11:12:00 -0500 (EST) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id A0C1116D; Tue, 3 Mar 2020 11:13:06 -0500 (EST) From: Michael Richardson To: rats@ietf.org, teep@ietf.org X-Attribution: mcr X-Mailer: MH-E 8.6; nmh 1.7+dev; GNU Emacs 25.1.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Archived-At: Subject: [Teep] "SLA" on Attestion Results, or validity lifetime X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Mar 2020 16:13:12 -0000 --=-=-= Content-Type: text/plain https://github.com/ietf-rats-wg/architecture/issues/42 asks: TEEP and others needs to know what kind of SLA RATS can provide. DaveThaler: The related TEEP issue is ietf-teep/architecture#148 and an initial TEEP architecture PR is at ietf-teep/architecture#153 which punts part of the problem to the RATS architecture, since it refers to the RATS arch for more discussion. A key architectural question is whether an attestation result may/should/must have a validity lifetime encoded in it (like DNS responses etc. have TTLs) or not. That is, can the Verifier say that an attestation result it generates has an expiration associated? (Physical passports and drivers licenses for example do have an expiration associated, as do X.509 certificates.) Or is the lifetime only implementable by the Relying Party based on other information like a Timestamp in the attestation result and its own appraisal policy for attestation results? And is there any requirement that a Relying Party and an Attestation Server need roughly synchronized clocks? (I suspect yes.) Offhand, I think that it would be good to allow attestation results to include an expiration timestamp. (Aside: assuming we want EATs to be usable as attestation results, I think this also motivates adding an Expiry claim to the EAT document.) mingpeiwk commented 16 hours ago I concur that a validity period should be associated with an attestation result. This is a common best practice for various assertions, certificates etc. as Dave listed. mcr commented 15 hours ago I don't think that the we need to have a lifetime in the Attestation Results. The Relying Party gets to decide if the results are fresh enough. We have two ways to prove freshness: some kind of pronouncement of time from "above" (maybe it's GPS, I don't know) such as imagined by TUDA, or some kind of nonce-based system. If the RP issues the nonce, it knows when it issued the nonce, so it knows how fresh the Attestation Results must be. It also knows when it first got those results. (Same thing applies RP->Verifier, and AttestationResults->Evidence) MCR: I believe that in the TEEP case that everything is sufficiently "online" that freshness via nonces is probably better than freshness by synchronized clocks. Other users may have different requirements, and thus https://datatracker.ietf.org/doc/draft-birkholz-rats-tuda/ -- Michael Richardson , Sandelman Software Works -= IPv6 IoT consulting =- --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl5eghIACgkQgItw+93Q 3WWq3Qf9H2w1dK3ilplaW7ZBlJynCtFyFY0DsdZ4kGTwDbafX8ZmJuus0Y0NtlP3 F9BAu1WII/231em34iKezrXeKqOIfpQvIj+SL+a9ItvHeAKRFwk47Gvhr7LS9a2s U2tFe5rB1/OAuZBlIHIMppSXLkh+zTbknVakq2JrKQgMqcyMQ6MwK7I60+HBbzU/ EuPAav7gQPO2saSbh1EY3guaIL5hcIdg3Y0nDgBeWygmqMsiubnVRu62BSktliSW 4R572SKm673fqOsv/+D1E2cc6WppFsqRHIvu0aLs1JyvC0zT7RpxeYVgtbdafxO7 3Qlm07u8/eX/WZ0VTDk2wMLMH7rCWQ== =yQxZ -----END PGP SIGNATURE----- --=-=-=-- From nobody Wed Mar 4 09:54:49 2020 Return-Path: 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 36BEC3A13C7; Wed, 4 Mar 2020 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DQo8L2JvZHk+DQo8L2h0bWw+DQo= --_000_AM0PR08MB37162F66853B673430F4FD8DFAE20AM0PR08MB3716eurp_-- From nobody Sat Mar 7 18:53:39 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B45073A041D; Sat, 7 Mar 2020 18:53:37 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: teep@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.120.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: teep@ietf.org Message-ID: <158363601764.25560.18212679725721220576@ietfa.amsl.com> Date: Sat, 07 Mar 2020 18:53:37 -0800 Archived-At: Subject: [Teep] I-D Action: draft-ietf-teep-architecture-07.txt X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Mar 2020 02:53:38 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Trusted Execution Environment Provisioning WG of the IETF. Title : Trusted Execution Environment Provisioning (TEEP) Architecture Authors : Mingliang Pei Hannes Tschofenig Dave Thaler David Wheeler Filename : draft-ietf-teep-architecture-07.txt Pages : 29 Date : 2020-03-07 Abstract: A Trusted Execution Environment (TEE) is an environment that enforces that only authorized code can execute within that environment, and that any data used by such code cannot be read or tampered with by any code outside that environment. This architecture document motivates the design and standardization of a protocol for managing the lifecycle of trusted applications running inside such a TEE. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-teep-architecture/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-teep-architecture-07 https://datatracker.ietf.org/doc/html/draft-ietf-teep-architecture-07 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-teep-architecture-07 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Mon Mar 9 13:02:08 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 264603A164B; Mon, 9 Mar 2020 13:01:56 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: teep@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.120.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: teep@ietf.org Message-ID: <158378411608.5665.924991625403799333@ietfa.amsl.com> Date: Mon, 09 Mar 2020 13:01:56 -0700 Archived-At: Subject: [Teep] I-D Action: draft-ietf-teep-protocol-01.txt X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Mar 2020 20:02:03 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Trusted Execution Environment Provisioning WG of the IETF. Title : Trusted Execution Environment Provisioning (TEEP) Protocol Authors : Hannes Tschofenig Mingliang Pei David Wheeler Dave Thaler Filename : draft-ietf-teep-protocol-01.txt Pages : 18 Date : 2020-03-09 Abstract: This document specifies a protocol that installs, updates, and deletes Trusted Applications (TAs) in a device with a Trusted Execution Environment (TEE). This specification defines an interoperable protocol for managing the lifecycle of TAs. The protocol name is pronounced teepee. This conjures an image of a wedge-shaped protective covering for one's belongings, which sort of matches the intent of this protocol. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-teep-protocol/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-teep-protocol-01 https://datatracker.ietf.org/doc/html/draft-ietf-teep-protocol-01 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-teep-protocol-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Mon Mar 9 13:22:56 2020 Return-Path: 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 043DB3A16C0 for ; Mon, 9 Mar 2020 13:22:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=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 header.b=EwlrcnXX; dkim=pass (1024-bit key) header.d=armh.onmicrosoft.com header.b=EwlrcnXX 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 23v1Uker6GZF for ; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi all, I have just submitted a new version of the TEEP protocol, see https://datat= racker.ietf.org/doc/html/draft-ietf-teep-protocol-01 The main change is the removal of the JSON-based encoding (based on the rec= ent mailing list discussion). There are still open issues and I hope we can resolve them based on the upc= oming hackathon effort. Thanks to the participants from the Berlin hackathon for their feedback. Ciao Hannes IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease 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. --_000_AM0PR08MB3716813F0AFEA3B53AC820B8FAFE0AM0PR08MB3716eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi all,

 

I have just submitted a new version of the TEEP p= rotocol, see https://datatracker.ietf.org/doc/html/draft-ietf-teep-protocol-01

 

The main change is the removal of the JSON-based enc= oding (based on the recent mailing list discussion).

 

There are still open issues and I hope we can resolv= e them based on the upcoming hackathon effort.

 

Thanks to the participants from the Berlin hackathon= for their feedback.

 

Ciao
Hannes

 

IMPORTANT NOTICE: The contents of this email and any attachments are confid= ential and may also be privileged. If you are not the intended recipient, p= lease 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. --_000_AM0PR08MB3716813F0AFEA3B53AC820B8FAFE0AM0PR08MB3716eurp_-- From nobody Tue Mar 10 15:48:12 2020 Return-Path: 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 D98FF3A07A3; Tue, 10 Mar 2020 15:48:09 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.599 X-Spam-Level: X-Spam-Status: No, score=-9.599 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=e9u1rvYi; dkim=fail (1024-bit key) reason="fail (body has been altered)" header.d=cisco.onmicrosoft.com header.b=LFDZKJzH Received: from 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Meeting registration fees: - Starting now we will be refunding any cancellation fee that we have retained for the cancellation of an in-person registration. - Starting in 48 hours time we will begin to refund in full all registration fees for those registered to participate in-person. - Unfortunately we are not able to roll forward the registration fee to IETF 108 Madrid for a number of administrative and financial reasons, most notably the different taxation requirements between Canada and Spain. - We are aware that some people do not want their registrations fees refunded and have asked us to convert it to a donation, which we will do. Anyone else who prefers this option please let us know at ietf-registrar@ietf.org before the refund process starts. - The delay of 48 hours is to give us time to see if we can process all refunds automatically, but if that is not possible then each registration will be processed manually by the Secretariat team and this will take some time. 2. Hotel bookings in contracted hotels: - If you are booked at the Hyatt, Metropolitan or Sutton Place hotels then you can cancel with 72 hours notice and no cancellation fee. - If you are booked at the Fairmont hotel and have paid the one-night non-refundable deposit, they have informed us that they will refund this deposit. - If you are booked at the Coast Coal Harbour Hotel then we understand that they retain the right to keep the deposit. We are working with them to see if they will consider waiving that given the extraordinary circumstances. - Contact information for each of the IETF hotels is available on the IETF 107 Vancouver hotel webpage [1]. Should you experience any difficulty cancelling your reservation, please contact us at ietf-registrar@ietf.org for assistance. 3. Financial impact on the LLC: - We are discussing with the venue the possibility of rescheduling the meeting to a later year. Doing this may mean back-to-back North American meetings. - We particularly want to thank the meeting host, Huawei, for supporting us fully in these difficult circumstances. - Our sponsors have been contacted and a number have already responded that they wish to sponsor the virtual meeting or roll forward their sponsorship to the next in-person meeting, for which we want to express our thanks. - We have comprehensive insurance and are exploring what claims we can make. - We expect that we will still need to dip into reserves to cover substantial unavoidable costs but we do not anticipate any significant financial impact from doing so. If you have any questions or comments then please feel free to contact me directly. [1] https://www.ietf.org/how/meetings/107/hotel/ -- Jay Daley IETF Executive Director exec-director@ietf.org _______________________________________________ IETF-Announce mailing list IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce --_002_485FFD12151A40BB8CBA7F26DBB9F444ciscocom_-- From nobody Wed Mar 11 13:39:21 2020 Return-Path: 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 D83CA3A09CC for ; Wed, 11 Mar 2020 13:39:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.597 X-Spam-Level: X-Spam-Status: No, score=-9.597 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, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); 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Danyliw" Thread-Topic: Can we hold a virtual meeting on the IETF 107 scheduled times? 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BCL:0; x-microsoft-antispam-message-info: 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 x-ms-exchange-antispam-messagedata: bovbIPDjzyHu7Nz4U5RybPourE3gG17fOaIKUftWMTVqwjQ86tEBmnTbEtke4B3Neix6rXyJWyHzBjuk8rcCNi+/b5dPPIl97zG2AUEoFk82SCbhFWA7ATBstY9Hfv9GEbaOwSMma12J7cUrV+eqaQ== x-ms-exchange-transport-forked: True MIME-Version: 1.0 X-OriginatorOrg: mcafee.com X-MS-Exchange-CrossTenant-Network-Message-Id: b211880c-e767-40d0-72fa-08d7c8a6beef X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Mar 2020 06:04:38.8814 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4943e38c-6dd4-428c-886d-24932bc2d5de X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: FCeIOcby71rc6XDaybgSodFAySQflFS6pdigNjizu2WdpVzAQJMTVxtwfVz7JkeFOW5xG9B7O4DJ5OTp5wCeq4niYmbcFZBDVeEiTtBr93aQ6WoCWe2LCGwJ3413ivbD X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR1601MB1352 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: mcafee.com Content-Type: multipart/alternative; boundary="_000_CY4PR1601MB1254B12910386A4EB149D35EEAF80CY4PR1601MB1254_" Archived-At: Subject: Re: [Teep] Working Group Last Call for HTTP Transport for Trusted Execution Environment Provisioning: Agent-to-TAM Communication X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Mar 2020 06:04:55 -0000 --_000_CY4PR1601MB1254B12910386A4EB149D35EEAF80CY4PR1601MB1254_ Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Hi Dave, Comments and nits below: 1) TAMs are reachable on the Internet, and Agents are on networks that might be behind a firewall, so that communication must be initiated by an Agent. Thus, the Agent has an HTTP Client and the TAM has an HTTP Server. Nit> Agents can also be behind NAT (and not reachable on the Internet). 2) Agents are reachable on the Internet, and TAMs are on networks that might be behind a firewall, so that communication must be initiated by a TAM. Thus, the Agent has an HTTP Server and the TAM has an HTTP Client. Comment> What is the use case of hosting TAMs not reachable on Internet ? Comment> If Agent is reachable on the Internet, it can be subjected to vari= ous attacks (e.g., DDoS). 3) Nit> Please add a reference to QUIC. Comment> Why refer to QUIC when it is not discussed in the document ? 4) When HTTPS is used, TLS certificates MUST be checked according to [RF= C2818]. Comment> RFC2818 refers to TLS 1.0 and several of its sections are outdated= in comparison with TLS 1.3. Comment> For example, when TLS 1.3 is used, is 0-RTT supported ? Comment> RFC2818 refers to RFC2459 and is obsoleted by RFC5280. Comment> What TLS versions should the client and server support (If TLS 1.2= needs to be supported, please add text discussing the privacy and security= implications) ? 5) HTTP is susceptible to several attacks including pervasive monitoring, = any specific reason to support HTTP ? 6) If the TEEP implementation already had a cached TAM certificate that it = trusts, it could skip to step 9 instead and generate a QueryResponse.) Comment> I don't get the above line, none of the steps discuss caching of T= AM certificate. 7) If any error occurs where the TEEP/HTTP Server cannot get a message buffer (empty or not) back from the TEEP implementation, the TEEP/ HTTP Server generates an appropriate HTTP error response. Comment> Any specific reason for not specifying the error code ? 8) Although TEEP is protected end-to-end inside of HTTP, there is still value in using HTTPS for transport, since HTTPS can provide additional protections as discussed in Section 6 of [I-D.ietf-httpbis-bcp56bis]. Comment> Please elaborate on end-to-end protection and how to defend from a= ttacks like MiTM modifying the HTTP headers, replay attacks etc. Comment> Why is ietf-httpbis-bcp56bis an Informative reference ? Comment> What are the privacy implications of using HTTP ? Comment> Why would the TAM administrator choose HTTP instead of HTTPS ? 7) IANA section needs to be updated with "application/teep+json" content-ty= pe. Cheers, -Tiru From: Konda, Tirumaleswar Reddy Sent: Tuesday, February 11, 2020 3:32 PM To: teep@ietf.org Subject: Working Group Last Call for HTTP Transport for Trusted Execution E= nvironment Provisioning: Agent-to-TAM Communication Hi all, This message starts a Work Group Last Call (WGLC) for HTTP Transport for Tr= usted Execution Environment Provisioning: Agent-to-TAM Communication. The = version to be reviewed is https://tools.ietf.org/html/draft-ietf-teep-otrp-= over-http-04 The WGLC will last for 2 weeks and will end on 26th Feb 2020. Please send your comments to the list before this date and your assessment = of whether or not it is ready to proceed to publication. Regards, Tiru & Nancy --_000_CY4PR1601MB1254B12910386A4EB149D35EEAF80CY4PR1601MB1254_ Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable

Hi Dave,

 

Comments and nits below:

 

1)

   TAMs are reachable on the Inter= net, and Agents are on networks

   that might be behind a firewall, so = that communication must be

   initiated by an Agent.  Thus, t= he Agent has an HTTP Client and

   the TAM has an HTTP Server.

 

Nit> Agents can also be behind NAT (and not re= achable on the  Internet).

 

2)

      Agents are re= achable on the Internet, and TAMs are on networks

       that might b= e behind a firewall, so that communication must be

       initiated by= a TAM.  Thus, the Agent has an HTTP Server and the

       TAM has an H= TTP Client.

 

Comment> What is the use case of hosting TAMs = not reachable on Internet ?

Comment> If Agent is reachable on the Internet= , it can be subjected to various attacks (e.g., DDoS).

 

3) Nit> Please add a reference to QUIC.

    Comment> Why refer to QUIC = when it is not discussed in the document ?

 

4)    When HTTPS is used, TLS cert= ificates MUST be checked according to [RFC2818].

 

Comment> RFC2818 refers to TLS 1.0 and several= of its sections are outdated in comparison with TLS 1.3.

Comment> For example, when TLS 1.3 is used, is= 0-RTT supported ?

Comment> RFC2818 refers to RFC2459 and is obso= leted by RFC5280.

Comment> What TLS versions should the client a= nd server support (If TLS 1.2 needs to be supported, please add text discus= sing the privacy and security implications) ?

 

5)  HTTP is susceptible to several attacks i= ncluding pervasive monitoring, any specific reason to support HTTP ?

 

6) If the TEEP implementation already had a cache= d TAM certificate that it trusts, it could skip to

     step 9 instead and gener= ate a QueryResponse.)

 

Comment> I don't get the above line, none of t= he steps discuss caching of TAM certificate.

 

7)

   If any error occurs where the T= EEP/HTTP Server cannot get a message

   buffer (empty or not) back from the = TEEP implementation, the TEEP/

   HTTP Server generates an appropriate= HTTP error response.

 

Comment> Any specific reason for not specifyin= g the error code ?

 

8)

   Although TEEP is protected end-= to-end inside of HTTP, there is still

   value in using HTTPS for transport, = since HTTPS can provide

   additional protections as discussed = in Section 6 of

   [I-D.ietf-httpbis-bcp56bis].

 

Comment> Please elaborate on end-to-end protec= tion and how to defend from attacks like MiTM modifying the HTTP headers, r= eplay attacks etc.

Comment> Why is ietf-httpbis-bcp56bis an Infor= mative reference ?

Comment> What are the privacy implications of = using HTTP ?

Comment> Why would the TAM administrator choos= e HTTP instead of HTTPS ?

 

7) IANA section needs to be updated with "ap= plication/teep+json" content-type.

 

Cheers,

-Tiru

 

 

From: Konda, Tirumaleswar Reddy
Sent: Tuesday, February 11, 2020 3:32 PM
To: teep@ietf.org
Subject: Working Group Last Call for HTTP Transport for Trusted Exec= ution Environment Provisioning: Agent-to-TAM Communication

 

Hi all,

 

This message starts a Work Group Last Call (WGLC) fo= r HTTP Transport for Trusted Execution Environment Provisioning: Agent-to-T= AM Communication.  The version to be reviewed is h= ttps://tools.ietf.org/html/draft-ietf-teep-otrp-over-http-04  

 

The WGLC will last for 2 weeks and will end on 26th = Feb 2020.

 

Please send your comments to the list before this da= te and your assessment of whether or not it is ready to proceed to publicat= ion.

 

Regards,

Tiru & Nancy

 

--_000_CY4PR1601MB1254B12910386A4EB149D35EEAF80CY4PR1601MB1254_-- From nobody Sun Mar 15 10:06:22 2020 Return-Path: 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 C5AA43A1926 for ; Sun, 15 Mar 2020 10:06:20 -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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable 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 25LqCuMM1-zN for ; Sun, 15 Mar 2020 10:06:19 -0700 (PDT) Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (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 6F2153A1922 for ; Sun, 15 Mar 2020 10:06:18 -0700 (PDT) Received: from kduck.mit.edu ([24.16.140.251]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 02FH6DaS003293 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 15 Mar 2020 13:06:16 -0400 Date: Sun, 15 Mar 2020 10:06:13 -0700 From: Benjamin Kaduk To: "Nancy Cam-Winget (ncamwing)" Cc: "teep@ietf.org" Message-ID: <20200315170613.GE50174@kduck.mit.edu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Archived-At: Subject: Re: [Teep] Virtual meeting on April 6 and 7 X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Mar 2020 17:06:21 -0000 On Fri, Mar 13, 2020 at 10:19:15PM +0000, Nancy Cam-Winget (ncamwing) wrote: > Hello TEEP Participants, > We have been allocated 2 days to meet virtually, presumably for 2 hrs each on April 6 and 7. > I’ve started a doodle poll for each of the days: > April 6: https://doodle.com/poll/vehu4sq863f59qdu > April 7: https://doodle.com/poll/zyq3z6guikcz8d8e > > If we get most attendance in one day, I can ask our AD if we could do that, but at the moment they are requesting that we stick to a slot per day assigned. We are not bound to only 2-hour sessions (per day) and should use however much time we think will be productive and for which we can get the right attendance. -Ben From nobody Sun Mar 15 13:24:41 2020 Return-Path: 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 404463A1BBD for ; Sun, 15 Mar 2020 13:24:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.6 X-Spam-Level: X-Spam-Status: No, score=-9.6 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, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=VUcuWff3; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=e8I56rS3 Received: from mail.ietf.org 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X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Mar 2020 03:50:04.1163 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4943e38c-6dd4-428c-886d-24932bc2d5de X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: u7bVNIRQRgLM7lm5tlpxz9kTLmIdEa6jxYCkNjik1GuPuH4hCAjmvnFGRMb2OPP3F/FyqE1dK5yrufrAIxwGbbRFuddwUfIha1Vef/xr6ic3IFinr4AC2I2R9IITNAzR X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR1601MB1337 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: mcafee.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Archived-At: Subject: Re: [Teep] Virtual meeting on April 6 and 7 X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Mar 2020 03:50:10 -0000 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X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18NClRFRVAgbWFp bGluZyBsaXN0DQpURUVQQGlldGYub3JnDQpodHRwczovL3d3dy5pZXRmLm9yZy9tYWlsbWFuL2xp c3RpbmZvL3RlZXANCg== --_004_7480F8A470A24EF29A7272F76C8D0F95ciscocom_-- From nobody Sun Mar 22 17:20:50 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 285463A091C; Sun, 22 Mar 2020 17:20:48 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Meeting Session Request Tool To: Cc: teep-chairs@ietf.org, kaduk@mit.edu, teep@ietf.org, ncamwing@cisco.com X-Test-IDTracker: no X-IETF-IDTracker: 6.122.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <158492284806.8878.12809420209587659112@ietfa.amsl.com> Date: Sun, 22 Mar 2020 17:20:48 -0700 Archived-At: Subject: [Teep] teep - New Interim Meeting Request X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Mar 2020 00:20:49 -0000 A new interim meeting request has just been submitted by Nancy Cam-Winget. This request requires approval by the Area Director of the Security Area The meeting can be approved here: https://datatracker.ietf.org/meeting/interim/request/interim-2020-teep-02 --------------------------------------------------------- Working Group Name: Trusted Execution Environment Provisioning Area Name: Security Area Session Requester: Nancy Cam-Winget Meeting Type: Virtual Meeting Session 1: Date: 2020-04-06 Start Time: 07:30 America/Los_Angeles Duration: 02:00 Remote Participation Information: https://ietf.webex.com/ietf/j.php?MTID=m2f919a8dd701e570abec8e628d32fa0e Agenda Note: --------------------------------------------------------- From nobody Sun Mar 22 17:26:18 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B825D3A091C; Sun, 22 Mar 2020 17:26:10 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Meeting Session Request Tool To: Cc: teep@ietf.org, teep-chairs@ietf.org, kaduk@mit.edu, ncamwing@cisco.com X-Test-IDTracker: no X-IETF-IDTracker: 6.122.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <158492317058.8802.14390302034681763509@ietfa.amsl.com> Date: Sun, 22 Mar 2020 17:26:10 -0700 Archived-At: Subject: [Teep] teep - New Interim Meeting Request X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Mar 2020 00:26:14 -0000 A new interim meeting request has just been submitted by Nancy Cam-Winget. This request requires approval by the Area Director of the Security Area The meeting can be approved here: https://datatracker.ietf.org/meeting/interim/request/interim-2020-teep-03 --------------------------------------------------------- Working Group Name: Trusted Execution Environment Provisioning Area Name: Security Area Session Requester: Nancy Cam-Winget Meeting Type: Virtual Meeting Session 1: Date: 2020-04-07 Start Time: 07:00 America/Los_Angeles Duration: 02:00 Remote Participation Information: https://ietf.webex.com/ietf/j.php?MTID=m6002721295705da5416a73b0388bbe07 Agenda Note: --------------------------------------------------------- From nobody Sun Mar 22 18:03:43 2020 Return-Path: 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 BBA0E3A0861; Sun, 22 Mar 2020 18:03:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.599 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6.123.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <158514245941.31362.8976713051894189346@ietfa.amsl.com> Date: Wed, 25 Mar 2020 06:20:59 -0700 Archived-At: Subject: [Teep] Trusted Execution Environment Provisioning (teep) WG Virtual Meeting: 2020-04-07 X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2020 13:21:09 -0000 The Trusted Execution Environment Provisioning (teep) Working Group will hold a virtual interim meeting on 2020-04-07 from 07:00 to 09:00 America/Los_Angeles (14:00 to 16:00 UTC). Agenda: Agenda: TBD JOIN WEBEX MEETING https://ietf.webex.com/ietf/j.php?MTID=m6002721295705da5416a73b0388bbe07 Meeting number (access code): 616 749 965 Meeting password: wkX6ySMWv52 JOIN BY PHONE 1-650-479-3208 Call-in toll number (US/Canada) Tap here to call (mobile phones only, hosts not supported): tel:%2B1-650-479-3208,,*01*616749965%23%23*01* 1-877-668-4493 Call-in toll free number (US/Canada) Tap here to call (mobile phones only, hosts not supported): tel:1-877-668-4493,,*01*616749965%23%23*01* Information about remote participation: https://ietf.webex.com/ietf/j.php?MTID=m6002721295705da5416a73b0388bbe07 From nobody Wed Mar 25 07:12:27 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 670A63A09D4; Wed, 25 Mar 2020 07:12:12 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IESG Secretary To: "IETF-Announce" Cc: teep@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.123.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <158514553228.31120.10346042312657748983@ietfa.amsl.com> Date: Wed, 25 Mar 2020 07:12:12 -0700 Archived-At: Subject: [Teep] Trusted Execution Environment Provisioning (teep) WG Virtual Meeting: 2020-04-06 X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2020 14:12:16 -0000 The Trusted Execution Environment Provisioning (teep) Working Group will hold a virtual interim meeting on 2020-04-06 from 07:30 to 09:30 America/Los_Angeles (14:30 to 16:30 UTC). Agenda: Agenda: TBD JOIN WEBEX MEETING https://ietf.webex.com/ietf/j.php?MTID=m2f919a8dd701e570abec8e628d32fa0e Meeting number (access code): 610 768 848 Meeting password: G2CigNEW3B4 JOIN BY PHONE 1-650-479-3208 Call-in toll number (US/Canada) Tap here to call (mobile phones only, hosts not supported): tel:%2B1-650-479-3208,,*01*610768848%23%23*01* 1-877-668-4493 Call-in toll free number (US/Canada) Tap here to call (mobile phones only, hosts not supported): tel:1-877-668-4493,,*01*610768848%23%23*01* Global call-in numbers: https://ietf.webex.com/ietf/globalcallin.php?MTID=m96c1ee196306ca237fe28930885b6092 Toll-free dialing restrictions: https://www.webex.com/pdf/tollfree_restrictions.pdf Information about remote participation: https://ietf.webex.com/ietf/j.php?MTID=m2f919a8dd701e570abec8e628d32fa0e From nobody Tue Mar 31 18:25:59 2020 Return-Path: X-Original-To: teep@ietf.org Delivered-To: teep@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B72803A0F60; Tue, 31 Mar 2020 18:25:56 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: teep@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.123.1 Auto-Submitted: auto-generated Precedence: bulk Reply-To: teep@ietf.org Message-ID: <158570435666.28487.11548790312212697152@ietfa.amsl.com> Date: Tue, 31 Mar 2020 18:25:56 -0700 Archived-At: Subject: [Teep] I-D Action: draft-ietf-teep-otrp-over-http-05.txt X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Apr 2020 01:25:57 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Trusted Execution Environment Provisioning WG of the IETF. Title : HTTP Transport for Trusted Execution Environment Provisioning: Agent-to- TAM Communication Author : Dave Thaler Filename : draft-ietf-teep-otrp-over-http-05.txt Pages : 14 Date : 2020-03-31 Abstract: The Trusted Execution Environment Provisioning (TEEP) Protocol is used to manage code and configuration data in a Trusted Execution Environment (TEE). This document specifies the HTTP transport for TEEP communication where a Trusted Application Manager (TAM) service is used to manage TEEs in devices that can initiate communication to the TAM. An implementation of this document can (if desired) run outside of any TEE, but interacts with a TEEP implementation that runs inside a TEE. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-teep-otrp-over-http/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-teep-otrp-over-http-05 https://datatracker.ietf.org/doc/html/draft-ietf-teep-otrp-over-http-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-teep-otrp-over-http-05 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. 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Wed, 1 Apr 2020 01:42:22 +0000 From: Dave Thaler To: Russ Housley , "teep@ietf.org" Thread-Topic: [Teep] Working Group Last Call for HTTP Transport for Trusted Execution Environment Provisioning: Agent-to-TAM Communication Thread-Index: AdXgu0iSExhAZRZISA2YiaXw3QSuswAQhgSACbIuJRA= Date: Wed, 1 Apr 2020 01:42:22 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=dthaler@microsoft.com; x-originating-ip: [2601:600:9780:16f0:2c3c:d263:476c:d2f7] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 8ece8e23-c9df-40cc-f5f6-08d7d5ddec82 x-ms-traffictypediagnostic: BL0PR2101MB0962: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 03607C04F0 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BL0PR2101MB1027.namprd21.prod.outlook.com; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable From: TEEP On Behalf Of Russ Housley Sent: Tuesday, February 11, 2020 9:05 AM To: teep@ietf.org Subject: Re: [Teep] Working Group Last Call for HTTP Transport for Trusted = Execution Environment Provisioning: Agent-to-TAM Communication I read the document. It looks really dood, but I have two comments: 1) My reading is that application/teep+json is not required for the con= tent type. I think it should be. It is required. Section 4 uses a SHOULD over the exact set of headers, but= section 5.2 (last paragraph) and section 6.3 are worded so that Content-Type is required. Is the wording in those two = sections sufficient or is there a specific change you would like? 2) Are there better examples "Foo" or "Bar" in the example. If not, pl= ease explain them in the text. I assume you're referring to the User-Agent strings in the example. We do= n't have an actual examples from real implementations to use yet. I take your request as a request to explain th= at the User-Agent values are just examples and would be filled in with implementation specific values. Thanks Russ, Dave Russ --_000_BL0PR2101MB1027A538F95E00E85B7131B6A3C90BL0PR2101MB1027_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 = ;

From: TEE= P <teep-bounces@ietf.org> On Behalf Of Russ Housley
Sent: Tuesday, February 11, 2020 9:05 AM
To: teep@ietf.org
Subject: Re: [Teep] Working Group Last Call for HTTP Transport for T= rusted Execution Environment Provisioning: Agent-to-TAM Communication<= /o:p>

 

I read the document. &nbs= p;It looks really dood, but I have two comments:

 

1)     My reading is that application/teep+json is not= required for the content type.  I think it should be.

 

It is required.  Section 4 uses = a SHOULD over the exact set of headers, but section 5.2 (last paragraph) an= d section 6.3
are worded so that Content-Type is required.   Is the wording in = those two sections sufficient or is there a specific

change you would like?

 

2)     Are there better examples "Foo" or "= Bar" in the example.  If not, please explain them in the text.

 

I assume you’re referring to th= e User-Agent strings in the example.   We don’t have an act= ual examples from real

implementations to use yet.  I t= ake your request as a request to explain that the User-Agent values are jus= t examples
and would be filled in with implementation specific values.

 

Thanks Russ,

Dave

 

Russ

 

 

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Wed, 1 Apr 2020 02:37:53 +0000 From: Dave Thaler To: "Konda, Tirumaleswar Reddy" CC: "teep@ietf.org" Thread-Topic: Working Group Last Call for HTTP Transport for Trusted Execution Environment Provisioning: Agent-to-TAM Communication Thread-Index: AdXgu0iSExhAZRZISA2YiaXw3QSuswZ06BMAA04PiqA= Date: Wed, 1 Apr 2020 02:37:52 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=dthaler@microsoft.com; x-originating-ip: [2601:600:9780:16f0:2c3c:d263:476c:d2f7] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 276666ef-18ce-4b19-6248-08d7d5e5ad9f x-ms-traffictypediagnostic: BL0PR2101MB0961: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:10000; x-forefront-prvs: 03607C04F0 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BL0PR2101MB1027.namprd21.prod.outlook.com; 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boundary="_000_BL0PR2101MB1027EC4E9CBA532DEF0099E8A3C90BL0PR2101MB1027_" MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 276666ef-18ce-4b19-6248-08d7d5e5ad9f X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Apr 2020 02:37:53.2945 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: iZQ+C9PIDINhjJZlub2TFU6cNlXJAunKDzg2K/gBDJwCRlWggsv2wvgJgkFSBweSQ7B+nE/o01o20dyJXbYmUEKd9VUHQcbOCXp+IrSKBYg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR2101MB0961 Archived-At: Subject: Re: [Teep] Working Group Last Call for HTTP Transport for Trusted Execution Environment Provisioning: Agent-to-TAM Communication X-BeenThere: teep@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: A Protocol for Dynamic Trusted Execution Environment Enablement List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Apr 2020 02:38:03 -0000 --_000_BL0PR2101MB1027EC4E9CBA532DEF0099E8A3C90BL0PR2101MB1027_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable From: TEEP On Behalf Of Konda, Tirumaleswar Reddy Sent: Saturday, March 14, 2020 11:05 PM To: teep@ietf.org Subject: Re: [Teep] Working Group Last Call for HTTP Transport for Trusted = Execution Environment Provisioning: Agent-to-TAM Communication Hi Dave, Comments and nits below: 1) TAMs are reachable on the Internet, and Agents are on networks that might be behind a firewall, so that communication must be initiated by an Agent. Thus, the Agent has an HTTP Client and the TAM has an HTTP Server. Nit> Agents can also be behind NAT (and not reachable on the Internet). Updated (in forthcoming -06) 2) Agents are reachable on the Internet, and TAMs are on networks that might be behind a firewall, so that communication must be initiated by a TAM. Thus, the Agent has an HTTP Server and the TAM has an HTTP Client. Comment> What is the use case of hosting TAMs not reachable on Internet ? Answered in https://github.com/ietf-teep/otrp-over-http/issues/2 https://datatracker.ietf.org/meeting/106/materials/slides-106-teep-sessa-en= arx-a-teep-use-case-00 https://datatracker.ietf.org/meeting/106/materials/slides-106-teep-sessa-te= ep-over-http-00 slides 7-9 and also the minutes from IETF 106 when the use cases were presented. Conclusion, as I understand it, was that this draft is not responsible for = answering your question since it's out of scope. The document just needs to say enough to say it's= out of scope, which is the intent of the current text. Comment> If Agent is reachable on the Internet, it can be subjected to vari= ous attacks (e.g., DDoS). That's an issue for anyone writing the transport for that use case to deal = with :) 3) Nit> Please add a reference to QUIC. Comment> Why refer to QUIC when it is not discussed in the document ? Added informational reference, and mention in section 1. 4) When HTTPS is used, TLS certificates MUST be checked according to [RF= C2818]. Comment> RFC2818 refers to TLS 1.0 and several of its sections are outdated= in comparison with TLS 1.3. Comment> For example, when TLS 1.3 is used, is 0-RTT supported ? Comment> RFC2818 refers to RFC2459 and is obsoleted by RFC5280. Comment> What TLS versions should the client and server support (If TLS 1.2= needs to be supported, please add text discussing the privacy and security= implications) ? https://tools.ietf.org/html/draft-ietf-httpbis-bcp56bis-09#section-4.3 says= : > o Certificates - Applications using HTTP should specify that TLS > certificates are to be checked according to [RFC2818] when HTTPS > is used. Which is what this doc says. Do you think that bcp56bis is deficient in n= ot asking app protocols to say what TLS versions should be supported? If so, you should provide that= feedback soon (if you didn't already) since it's listed as WG Consensus: Waiting for Write-Up I'm hesitant to add any text here without a specific recommendation from th= at doc since I'd probably get it wrong. Leaving it silent, on the other hand, means people should get the answer fr= om bcp56bis, which is referenced in the Security considerations section. I don't know if that's sufficient or not= , but would want advice from someone like Mark. 5) HTTP is susceptible to several attacks including pervasive monitoring, = any specific reason to support HTTP ? For debugging purposes before putting it into production. Also some argue that since TEEP already does its own security layer inside,= the value of multiple layers of security Is diminished, especially if you're a constrained node looking to reduce co= de size. The text in the security consideration Section is targeted at such folks explaining why they should consider HTTPS= anyway. (That may or may not convince them but that's their call.) 6) If the TEEP implementation already had a cached TAM certificate that it = trusts, it could skip to step 9 instead and generate a QueryResponse.) Comment> I don't get the above line, none of the steps discuss caching of T= AM certificate. Caching of certificates would be a TEEP protocol layer thing, not a transpo= rt layer thing, so you'd get the answer from the TEEP protocol spec. Here it's referring to the OCSP_DATA in the Q= ueryRequest in section 4.1 of draft-ietf-teep-protocol. The fact that the "caching" is not mentioned= in that spec is a valid issue for that spec to fix. Updated text here to reference OCSP_DATA. 7) If any error occurs where the TEEP/HTTP Server cannot get a message buffer (empty or not) back from the TEEP implementation, the TEEP/ HTTP Server generates an appropriate HTTP error response. Comment> Any specific reason for not specifying the error code ? Yes. There are many possible error reasons and legal HTTP error codes for = them, so it's up to the implementation to pick an appropriate one based on HTTP s= pecs. https://tools.ietf.org/html/draft-ietf-httpbis-bcp56bis says: Instead, applications using HTTP should define their errors to use the most applicable status code, making generous use of the general status codes (200, 400 and 500) when in doubt. Importantly, they should not specify a one-to-one relationship between status codes and application errors, thereby avoiding the exhaustion issue outlined above. FYI, when MNot reviewed this spec (as author of bcp56bis) he said it looked= ok. 8) Although TEEP is protected end-to-end inside of HTTP, there is still value in using HTTPS for transport, since HTTPS can provide additional protections as discussed in Section 6 of [I-D.ietf-httpbis-bcp56bis]. Comment> Please elaborate on end-to-end protection and how to defend from a= ttacks like MiTM modifying the HTTP headers, replay attacks etc. I'm going to push back on this... can you elaborate on why you think there'= s something specific to this document here, beyond what's stated in the reference (plus of course t= he fact that TEEP is protected end-to-end inside of HTTP)? Comment> Why is ietf-httpbis-bcp56bis an Informative reference ? Fair question. I don't have a strong preference either way. Current answer is because it's not used in any sentence in a normative way. Comment> What are the privacy implications of using HTTP ? See Section 6.1 of bcp56bis. Comment> Why would the TAM administrator choose HTTP instead of HTTPS ? For debugging purposes before putting it into production. 7) IANA section needs to be updated with "application/teep+json" content-ty= pe. No, the media type is up to the protocol spec, not the transport. It's in = the TEEP Protocol's IANA consideration section. This is stated in section 4 of this draft whe= re it says: =D8 (replacing =D8 the content type with the relevant TEEP content type per the TEEP =D8 specification): Dave Cheers, -Tiru --_000_BL0PR2101MB1027EC4E9CBA532DEF0099E8A3C90BL0PR2101MB1027_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

 

 

From: TEEP <tee= p-bounces@ietf.org> On Behalf Of Konda, Tirumaleswar Reddy
Sent: Saturday, March 14, 2020 11:05 PM
To: teep@ietf.org
Subject: Re: [Teep] Working Group Last Call for HTTP Transport for T= rusted Execution Environment Provisioning: Agent-to-TAM Communication<= /o:p>

 

Hi Dave,

 

Comments and nits belo= w:

 

1)

   TAMs= are reachable on the Internet, and Agents are on networks

   that migh= t be behind a firewall, so that communication must be

   initiated= by an Agent.  Thus, the Agent has an HTTP Client and

   the TAM h= as an HTTP Server.

 

Nit> Agents can als= o be behind NAT (and not reachable on the  Internet).

 

Updated (in forthco= ming -06)

 

2)

   &nbs= p;  Agents are reachable on the Internet, and TAMs are on network= s

   &nbs= p;   that might be behind a firewall, so that communication must = be

   &nbs= p;   initiated by a TAM.  Thus, the Agent has an HTTP Server= and the

   &nbs= p;   TAM has an HTTP Client.

 

Comment> What is th= e use case of hosting TAMs not reachable on Internet ?

 

Answered in

https://github.com/ietf-teep/= otrp-over-http/issues/2

https://datatracker.ietf.org/meeting/106/materials/slides-1= 06-teep-sessa-enarx-a-teep-use-case-00

https://datatracker.ietf.org/meeting/106/materials/= slides-106-teep-sessa-teep-over-http-00 slides 7-9

and also the minute= s from IETF 106 when the use cases were presented.

 

Conclusion, as I un= derstand it, was that this draft is not responsible for answering your ques= tion
since it’s out of scope.  The document just needs to say enough = to say it’s out of scope, which is the
intent of the current text.

 

Comment> If Agent i= s reachable on the Internet, it can be subjected to various attacks (e.g., = DDoS).

 

That’s an iss= ue for anyone writing the transport for that use case to deal with J

 

3) Nit> Please add = a reference to QUIC.

    Com= ment> Why refer to QUIC when it is not discussed in the document ?<= /o:p>

 

Added informational= reference, and mention in section 1.

 

4)    W= hen HTTPS is used, TLS certificates MUST be checked according to [RFC2818].=

 

Comment> RFC2818 re= fers to TLS 1.0 and several of its sections are outdated in comparison with= TLS 1.3.

Comment> For exampl= e, when TLS 1.3 is used, is 0-RTT supported ?

Comment> RFC2818 re= fers to RFC2459 and is obsoleted by RFC5280.

Comment> What TLS v= ersions should the client and server support (If TLS 1.2 needs to be suppor= ted, please add text discussing the privacy and security implications) ?

 

https://too= ls.ietf.org/html/draft-ietf-httpbis-bcp56bis-09#section-4.3 says:<= /o:p>

>   o  Certificates - Applications using HT= TP should specify that TLS

>      certificates are to be che= cked according to [RFC2818] when HTTPS

>      is used.

 

Which is what this = doc says.   Do you think that bcp56bis is deficient in not asking= app protocols to

say what TLS versio= ns should be supported?   If so, you should provide that feedback= soon (if you didn’t already) since it’s

listed as WG Consensus:= Waiting for Write-Up

 

I’m hesitant = to add any text here without a specific recommendation from that doc since = I’d probably get it wrong.

Leaving it silent, = on the other hand, means people should get the answer from bcp56bis, which = is referenced in the

Security considerat= ions section.   I don’t know if that’s sufficient or = not, but would want advice from someone like

Mark.

 

5)  HTTP is susce= ptible to several attacks including pervasive monitoring, any specific reas= on to support HTTP ?

 

For debugging purpo= ses before putting it into production.

 

Also some argue tha= t since TEEP already does its own security layer inside, the value of multi= ple layers of security

Is diminished, espe= cially if you’re a constrained node looking to reduce code size. = ;  The text in the security consideration

Section is targeted= at such folks explaining why they should consider HTTPS anyway.  = ; (That may or may not convince them

but that’s th= eir call.)

 

6) If the TEEP impleme= ntation already had a cached TAM certificate that it trusts, it could skip = to

   &nbs= p; step 9 instead and generate a QueryResponse.)

 

Comment> I don't ge= t the above line, none of the steps discuss caching of TAM certificate.

 

Caching of certific= ates would be a TEEP protocol layer thing, not a transport layer thing, so = you’d get the answer

from the TEEP proto= col spec.  Here it’s referring to the OCSP_DATA in the Quer= yRequest in section 4.1

of= draft-ietf-teep-protocol.   The fact that the “cachingR= 21; is not mentioned in that

sp= ec is a valid issue for that spec to fix.

 

Updated text here t= o reference OCSP_DATA.

 

7)

   If a= ny error occurs where the TEEP/HTTP Server cannot get a message<= /p>

   buffer (e= mpty or not) back from the TEEP implementation, the TEEP/

   HTTP Serv= er generates an appropriate HTTP error response.

 

Comment> Any specif= ic reason for not specifying the error code ?

 

Yes.  There ar= e many possible error reasons and legal HTTP error codes for them,
so it’s up to the implementation to pick an appropriate one based on = HTTP specs.

 

https://tools.ietf.org/htm= l/draft-ietf-httpbis-bcp56bis says:

   Instead, applications using HTT= P should define their errors to use

   the most applicable status code= , making generous use of the general

   status codes (200, 400 and 500)= when in doubt.  Importantly, they

   should not specify a one-to-one= relationship between status codes and

   application errors, thereby avo= iding the exhaustion issue outlined

   above.

 

FYI, when MNot revi= ewed this spec (as author of bcp56bis) he said it looked ok.

 

8)

   Alth= ough TEEP is protected end-to-end inside of HTTP, there is still=

   value in = using HTTPS for transport, since HTTPS can provide

   additiona= l protections as discussed in Section 6 of

   [I-D.ietf= -httpbis-bcp56bis].

 

Comment> Please ela= borate on end-to-end protection and how to defend from attacks like MiTM mo= difying the HTTP headers, replay attacks etc.

 

I’m going to = push back on this… can you elaborate on why you think there’s s= omething specific to

this document here,= beyond what’s stated in the reference (plus of course the fact that = TEEP is protected

end-to-end inside o= f HTTP)?

 

Comment> Why is iet= f-httpbis-bcp56bis an Informative reference ?

 

Fair question. I do= n’t have a strong preference either way.

Current answer is b= ecause it’s not used in any sentence in a normative way.

 

Comment> What are t= he privacy implications of using HTTP ?

 

See Section 6.1 of = bcp56bis.

 

Comment> Why would = the TAM administrator choose HTTP instead of HTTPS ?

 

For debugging purpo= ses before putting it into production.

 

7) IANA section needs = to be updated with "application/teep+json" content-type.=

 

No, the media type = is up to the protocol spec, not the transport.  It’s in the TEEP= Protocol’s

IANA consideration = section.   This is stated in section 4 of this draft where it say= s:

=D8    &n= bsp;(replacing

=D8    &n= bsp;the content type with the relevant TEEP content type per the TEEP<= /o:p>

=D8    &n= bsp;specification):

 

Dave

 

Cheers,

-Tiru

 

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