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ST19WP18

SOFTWARE DESCRIPTION

Embedded firmware

The ST19WP18 includes fully compliant TCG

v1.1b firmware which supports features like cryp-

tographic key generation, integrity metrics and se-

cure storage. In addition, the product is TCG v1.2

ready and provides support for functions such as

Delegation, Transport session and Locality.

This TCG v1.1b / v1.2 compliant firmware uses an

optimized and flexible software architecture allow-

ing the integration of Trusted Computing Frame-

work enhancements or implementation of dedicat-

ed functions.

TCG Software Stack

The ST19WP18 provides complete system soft-

ware layers, fully compliant with TCG Trusted

Software Stack specification.

are supported. Please contact ST for a complete

list of supported operating systems. The embed-

ded firmware plus additional modules bring OEMs

a complete TPM solution for their PC platforms.

The software stack comprises the following mod-

ules:

–

BIOS Memory Absent driver (MA)

–

BIOS Memory Present driver (MP)

–

TPM Device Driver (TDD)

–

TPM Device Driver Library (TDDL)

–

TSS Core Services (TCS)

–

TSS Service Provider (TSP)

Cryptographic infrastructure interface

Secure

and

trustworthy

functions

of

the

ST19WP18 module are made available to applica-

tions through cryptographic Application Program-

ming

Interfaces

(APIs)

compliant

either

to

PKCS#11standard or to the MS CAPI specifica-

tion. An ST19WP18 ready Cryptographic Service

Provider (CSP) can then be used to enhance Op-

erating System security policies or applications se-

curity plug-ins which take full advantage of the

secure TPM functionalities such as sealed stor-

age, key generation, signature and encryption.

Figure 3. Software Layers

Application 1

Application 3

Application 2

MS CAPI

CSP

PKCS#

CSP

Cryptographic

Infrastructure Interface

TSP Interface

OS User

Mode

TSS Service Provider

TSS Core Services

TPM Device Driver Library

TCS Interface

TDDL Interface

TPM Device Driver

ST19WP18 - TPM

OS Kernel

Mode

Hardware

ai09876

TPM BIOS

MA Driver

TPM BIOS

MP Driver

System Processes

User Processes