Trusted Execution Environment Provisioning (TEEP) Architecture
draft-ietf-teep-architecture-06

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TEEP                                                              M. Pei
Internet-Draft                                                  Symantec
Intended status: Informational                             H. Tschofenig
Expires: August 11, 2020                                     Arm Limited
                                                               D. Thaler
                                                               Microsoft
                                                              D. Wheeler
                                                                   Intel
                                                       February 08, 2020

     Trusted Execution Environment Provisioning (TEEP) Architecture
                    draft-ietf-teep-architecture-06

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.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on August 11, 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 August 11, 2020                [Page 1]
Internet-Draft              TEEP Architecture              February 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Payment . . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.2.  Authentication  . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  Internet of Things  . . . . . . . . . . . . . . . . . . .   7
     3.4.  Confidential Cloud Computing  . . . . . . . . . . . . . .   8
   4.  Architecture  . . . . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  System Components . . . . . . . . . . . . . . . . . . . .   8
     4.2.  Multiple TEEs in a Device . . . . . . . . . . . . . . . .  10
     4.3.  Multiple TAMs and Relationship to TAs . . . . . . . . . .  12
     4.4.  Untrusted Apps, Trusted Apps, and Personalization Data  .  13
       4.4.1.  Examples of Application Delivery Mechanisms in
               Existing TEEs . . . . . . . . . . . . . . . . . . . .  14
     4.5.  Entity Relations  . . . . . . . . . . . . . . . . . . . .  16
   5.  Keys and Certificate Types  . . . . . . . . . . . . . . . . .  17
     5.1.  Trust Anchors in a TEEP Agent . . . . . . . . . . . . . .  18
     5.2.  Trust Anchors in a TEE  . . . . . . . . . . . . . . . . .  19
     5.3.  Trust Anchors in a TAM  . . . . . . . . . . . . . . . . .  19
     5.4.  Scalability . . . . . . . . . . . . . . . . . . . . . . .  19
     5.5.  Message Security  . . . . . . . . . . . . . . . . . . . .  20