Trusted Execution Environment Provisioning (TEEP) Architecture
draft-ietf-teep-architecture-13
TEEP M. Pei
Internet-Draft Broadcom
Intended status: Informational H. Tschofenig
Expires: May 6, 2021 Arm Limited
D. Thaler
Microsoft
D. Wheeler
Intel
November 02, 2020
Trusted Execution Environment Provisioning (TEEP) Architecture
draft-ietf-teep-architecture-13
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
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This Internet-Draft will expire on May 6, 2021.
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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 16
4.4.2. Example: Application Delivery Mechanisms in Arm
TrustZone . . . . . . . . . . . . . . . . . . . . . . 16
4.5. Entity Relations . . . . . . . . . . . . . . . . . . . . 17
5. Keys and Certificate Types . . . . . . . . . . . . . . . . . 18
5.1. Trust Anchors in a TEEP Agent . . . . . . . . . . . . . . 20
5.2. Trust Anchors in a TEE . . . . . . . . . . . . . . . . . 20
5.3. Trust Anchors in a TAM . . . . . . . . . . . . . . . . . 20
5.4. Scalability . . . . . . . . . . . . . . . . . . . . . . . 20
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