Trusted Execution Environment Provisioning (TEEP) Architecture
draft-ietf-teep-architecture-10
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2020-06-19
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TEEP M. Pei
Internet-Draft Broadcom
Intended status: Informational H. Tschofenig
Expires: December 21, 2020 Arm Limited
D. Thaler
Microsoft
D. Wheeler
Intel
June 19, 2020
Trusted Execution Environment Provisioning (TEEP) Architecture
draft-ietf-teep-architecture-10
Abstract
A Trusted Execution Environment (TEE) is an environment that enforces
that any code within that environment cannot be tampered with, 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.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
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Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 21, 2020.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
Pei, et al. Expires December 21, 2020 [Page 1]
Internet-Draft TEEP Architecture June 2020
publication of this document. Please review these documents
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This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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Without obtaining an adequate license from the person(s) controlling
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than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Payment . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2. Authentication . . . . . . . . . . . . . . . . . . . . . 8
3.3. Internet of Things . . . . . . . . . . . . . . . . . . . 8
3.4. Confidential Cloud Computing . . . . . . . . . . . . . . 8
4. Architecture . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1. System Components . . . . . . . . . . . . . . . . . . . . 8
4.2. Multiple TEEs in a Device . . . . . . . . . . . . . . . . 11
4.3. Multiple TAMs and Relationship to TAs . . . . . . . . . . 13
4.4. Untrusted Apps, Trusted Apps, and Personalization Data . 14
4.4.1. Example: Application Delivery Mechanisms in Intel SGX 15
4.4.2. Example: Application Delivery Mechanisms in Arm
TrustZone . . . . . . . . . . . . . . . . . . . . . . 16
4.5. Entity Relations . . . . . . . . . . . . . . . . . . . . 16
5. Keys and Certificate Types . . . . . . . . . . . . . . . . . 18
5.1. Trust Anchors in a TEEP Agent . . . . . . . . . . . . . . 19
5.2. Trust Anchors in a TEE . . . . . . . . . . . . . . . . . 20
5.3. Trust Anchors in a TAM . . . . . . . . . . . . . . . . . 20
5.4. Scalability . . . . . . . . . . . . . . . . . . . . . . . 20
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