National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

Software Package

— Integrity Metrics (used for BIOS and OS authentica-

tion)

— Random Number Generation service

— Cryptographic Keys generation

— Secure digital sign/verify

— Secure storage

— Hidden execution using intenal memories (Flash and

RAM)

— Device drivers (BIOS & OS)

— TDDL layer

— TSS (TCS and TSP)

Software Block Diagram

Remote or Local

PC21100

Hardware Interface

TCPA Core Services (TCS)

TCPA Device Driver Library

TPM Device Driver

TPM Firmware

Application

Cryptographic Infrastructure

CSP

TCPA Service Provider (TSP)

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LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

CUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and whose

failure to perform, when properly used in accordance

with instructions for use provided in the labeling, can

be reasonably expected to result in a significant injury

to the user.

2. A critical component is any component of a life

support device or system whose failure to perform can

be reasonably expected to cause the failure of the life

support device or system, or to affect its safety or

effectiveness.