Software Stack

The TCG Software Stack (TSS) is a software specification that provides a standard API for accessing the functions of the TPM. Application developers can use this software specification to develop interoperable client applications for more tamper-resistant computing.

The purpose of the TSS Work Group is to provide a standard set of APIs for Application vendors who wish to make use of the TPM. The group works to produce a vendor neutral specification which will provide an abstraction of the hardware differences so that application vendors can write applications that will work regardless of the hardware, Operating System, or environment that is used. The TSS also aims to provide means for applications to talk to TPM’s either locally or remotely.

Lee Wilson

Security Innovation, Inc.


Resource Name
TSS TAB and Resource Manager
TSS System Level API and TPM Command Transmission Interface Specification
TSS Feature API Specification
BSSSD: Trusted Computing Now Available for FreeBSD and OpenBSD


Membership in the Trusted Computing Group is your key to participating with fellow industry stakeholders in the quest to develop and promote trusted computing technologies.

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Trusted Computing

Standards-based Trusted Computing technologies developed by TCG members now are deployed in enterprise systems, storage systems, networks, embedded systems, and mobile devices and can help secure cloud computing and virtualized systems.

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Trusted Computing Group announced that its TPM 2.0 (Trusted Platform Module) Library Specification was approved as a formal international standard under ISO/IEC (the International Organization for Standardization and the International Electrotechnical Commission). TCG has 90+ specifications and guidance documents to help build a trusted computing environment.

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