Engineering Trustworthy Systems: Get Cybersecurity Design Right the First Time

CHAPTER

9   Trustworthy Hardware: Bedrock

Overview

•   9.1 Foundation of Trust

•   9.2 Instruction Set Architectures

•   9.3 Supervisors with Rings and Things

•   9.4 Controlling Memory: Mapping, Capabilities, and Tagging

•   9.4.1 Memory Mapping

•   9.4.2 Capabilities

•   9.4.3 Tagging

•   9.5 Software in Hardware

•   9.5.1 Microcode

•   9.5.2 Firmware

•   9.5.3 Secure Bootstrapping

•   9.6 Buses and Controllers

Learning Objectives

•   Explain why hardware is the foundation of trustworthy systems.

•   Compare how hardware security relates to the two types of processor instruction sets.

•   Describe how supervisor mode and rings support a trustworthy system.

•   Explain memory protection techniques and how they work with supervisor modes.