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Infrastructure Work Group Specifications In Public Review

The following Infrastructure Work Group specifications have been posted for Public Review: TCG Attestation PTS Protocol: Binding to TNC IF-M, Version 1.0, Revision 25; TCG IWG Reference Manifest (RM) Schema Specification, Version 2.0, Revision 0.2; TCG IWG Core Integrity Schema Specification, Version 2.0, Revision 0.1; TCG IWG Integrity Report Schema, Version 2.0, Revision 0.1

The TCG Attestation PTS Protocol: Binding to TNC IF-M Version 1.0 specification builds upon the existing IWG work defining Platform Trust Service (PTS) that is capable of creating attestation evidence describing the security state of the system in response to a challenge by a challenger. This specification defines the protocol and grammar used by the remote challenger to request particular attestation evidence from a system and the responses. In order to offer a solution that is consistent with the XML encoded Integrity Report [INT-REPORT] approach used by the PTS and the type-length-value (TLV) binary encoding used by the TNC architecture both types of messages will be defined.

The IWG Reference Manifest (RM) Schema Specification, Version 2.0 provides a detailed description of the TCG Infrastrcuture Working Group's Reference Manifest (RM) schema, here after refered to as the RM schema. The RM schema is derived from the core integrity metadata XML schema.

The IWG Core Integrity Schema Specification, Version 2.0 provides a detailed description of the TCG Infrastructure Working Group's core integrity metadata XML schema, hereafter referred to as the core schema. The core schema serves the purposes of:

  • Defining the basic structure of XML documents responsible for communicating integrity metadata
  • Defining XML data structures applicable to dependent, derived XML schemas

The IWG Integrity Report Schema Specifcation, Version 2.0 provides a detailed description of the TCG Infrastructure Working Group's integrity report XML schema, hereafter referred to as the report schema. The report schema is derived from the Core Integrity Schema. The report schema allows instantiation of interoperable integrity reports and snapshots including data structures provided by a 1.1 or 1.2 Level TPM. Integrity reports based on the report schema are used to detail run-time measurements and assertions of the components of a system to a verifier. One use of integrity reports and structures is in the Trusted Network Connect (TNC) use models whereby a Platform Trust Service (PTS) creates integrity reports and snapshots to be sent by IMCs to their corresponding IMVs for verification of acceptable platform state prior to network access.

The following specifications have been made available for public review:

Infrastructure Work Group (IWG) Specifications: