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Resources/
Documents

TPM 1.2 Main Specification

Specification

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Latest version

TPM Main Level 2 - Part 3: Commands, Version 1.2, Revision 116

Last updated:Oct 2, 2003
Oct 2, 2003
339 pages
1.9 MB
Download

The TPM main specification is an industry specification that enables trust in computing platforms in general. The main specification is broken into parts to make the role of each document clear. A version of the specification (like 1.2) requires all parts to be a complete specification. A TPM designer MUST be aware that for a complete definition of all requirements necessary to build a TPM, the designer MUST use the appropriate platform specific specification for all TPM requirements.

Specification Versions Available for Download

Latest Version

TPM Main Specification Level 2 Version 1.2, Revision 116

  • Part 1 – Design Principles (PDF, 2.61MB)
  • Part 2 – Structures of the TPM (PDF, 1.12MB)
  • Part 3 – Commands (PDF, 1.80MB)

Previous Versions

TPM Main Specification Level 2 Version 1.2, Revision 103

  • Part 1 – Design Principles (PDF, 1.61MB)
  • Part 2 – Structures of the TPM (PDF, 1.10MB)
  • Part 3 – Commands (PDF, 1.93MB)

JTC1, a joint committee of the International Organization for Standardization, or ISO, and IEC, the International Electrotechnical Commission, has accepted and published the Trusted Computing Group Trusted Platform Module specification Version 1.2 as ISO/IEC standard 11889:2009.

The ISO/IEC 11889:2009 standard publication is currently available at: http://www.iso.org/iso/catalogue_detail.htm?csnumber=50970.

  • ISO/IEC 11889-1:2009 Information Technology — TPM Library — Part 1: Overview
  • ISO/IEC 11889-2:2009 Information Technology — TPM Library — Part 2: Design Principles
  • ISO/IEC 11889-3:2009 Information Technology — TPM Library — Part 3: Structures
  • ISO/IEC 11889-4:2009 Information Technology — TPM Library — Part 4: Commands

TPM Main Specification Version 1.2, Revision 94

  • Part 1 – Design Principles
  • Part 2 – Structures of the TPM
  • Part 3 -Commands

TPM Main Specification Version 1.2, Revision 85

  • Part 1 – Design Principles
  • Part 2 – Structures of the TPM
  • Part 3 -Commands

TPM Main Specification Version 1.2, Revision 62

  • Part 1 – Design Principles
  • Part 2 – Structures of the TPM
  • Part 3 -Commands

TCPA Main Specification Version 1.1b

Previous versions
Oct 2, 2003TPM Main Level 2 - Part 2: Structures, Version 1.2, Revision 116
Oct 2, 2003TPM Main Level 2 - Part 1: Design Principles, Version 1.2, Revision 116
Oct 2, 2003TPM Main Level 2 - Part 3: Commands, Version 1.2, Revision 103
Oct 2, 2003TPM Main Level 2 - Part 2: Structures, Version 1.2, Revision 103
Oct 2, 2003TPM Main Level 2 - Part 1: Design Principles, Version 1.2, Revision 103
Published by Work Group
Trusted Platform Module (TPM)

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Errata

TCG PC Client Platform TPM Profile (PTP) Specification

The PC Client Platform TPM Profile Specification is a companion to the TPM Library Specification. The TPM Library defines everything a TPM can do, e.g. the…
Work Group

PC Client

Last updated

Aug 27, 2026

Specification

TCG Component RIM Binding for CoRIM

This Specification complies with the TCG Component Reference Integrity Manifest Information Model Specification and provides additional requirements for a CoRIM
Work Group

PC Client

Last updated

Aug 26, 2026

Errata

Errata for TPM Library Specification 2.0

This document describes errata and clarifications for the TCG Trusted Platform Module Library Version 2.0 Revision 1.16, 1.38, 1.59, 1.83, 184, 185 as…
Work Group

Trusted Platform Module (TPM)

Last updated

Aug 24, 2026

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