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The measurements can then be retrieved by a remote attestation server to determine the configuration of the device at the time it was booted as well as during runtime.
Tpm trusted platform module windows 10 software#
When devices start up, the software and firmware are measured by the Linux Integrity Measurement Architecture (IMA) and the results are stored in the OPTIGA TM TPM Platform Configuration Registers (PCRs). The system notifies the user if it does detect changes, e.g. The TPM provides a secured identity and storage space for system control mechanisms that may check whether hardware and software are still running as intended. By the time most users realize they have suffered a data breach, they have actually been under attack for weeks, months, or even years.Ī system health check supported by Infineon’s OPTIGA TM TPM lets users check that their devices have not been manipulated. Once malware is on a device, it may remain there undetected for long periods as it often works undetected in the background. Worst still, cyber threats have become so sophisticated that conventional defense-in-depth cybersecurity measures may even fail to detect them. Microsoft products and services lead the world in the use of international standards-based security solutions based on the TPM.Today, network equipment and IoT devices face a constant barrage of attacks aimed at exposing vulnerabilities in software and firmware. The Platform Crypto Provider Toolkit and PCPTool, for programming a TPM in C (part of TSS.MSR).Urchin: A simple library for accessing the TPM on resource-constrained devices.TSS.Java, for programming a TPM in Java (preliminary release – part of TSS.MSR).TSS.C++, for programming a TPM in C++ (part of TSS.MSR).TSS.NET, for programming the TPM in C# (part of TSS.MSR).In addition to continuing to develop and maintain the TPM reference implementation, Microsoft has open-sourced software libraries and solutions that allow TPM-based applications to be built. More information on how TPMs work and how that they can be used to solve common security problems can be found in A Practical Guide to TPM2.0. Other advanced TPM features include a secure clock, monotonic counters, a non-volatile storage facility, and very flexible and secure mechanisms for key management operations like key import and export.
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The boot-log can also be used to protect keys for disk encryption, because the TPM incorporates a feature called sealing that can be used to make sure that the encryption key is only disclosed to authorized software, and not to disk-cracking tools. The resulting boot-log can be used to verify that devices are running known-software and are up-to-date using a TPM feature called quoting or attestation. But a TPM is intimately tied into how a computer boots and runs, which means it is far more powerful and useful than a simple “smart-card on the motherboard.”įor example, platforms that incorporate TPMs “measure” and log the software that boots on the device. A TPM does many of the things that a smart-card or hardware security module (HSM) does – for example, it is able to create, manage and use cryptographic keys, as well as store confidential data. The TPM is a low-cost, but powerful and flexible, crypto-processor. The TPM is both an industry and international standard (ISO/IEC) specification with wide international support. The TPM is an evolving standard: Individuals, organizations and governments that would like to participate in its growth should join the Trusted Computing Group (TCG.) TCG has many TPM-related standards activities, including specifications that describe how TPMs are built into platforms, standardized software-stacks for building TPM applications, as well as protocol design and digital certificate profiles. This allows vendors to quickly build high-quality and interoperable TPM implementations. Most of the normative behavioral specification is written in a subset of the C programming language, and the TPM programming interface is defined in machine-readable tables. The TPM2.0 specification is unique in that it is machine readable. TPM2.0 is also making increasing inroads into network equipment, mobile and IoT devices. TPM2.0 devices are now available from many vendors, and are incorporated into most business class PCs and many servers. Many new concepts and features were introduced with TPM2.0, including crypto-agility, easier management, a more flexible authorization model, and better extensibility. More recently, Microsoft architected and and edited the TPM2.0 specification.
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Microsoft invented and contributed the attestation, sealing and Platform Configuration Register (PCR) features to the original TPM, and contributed to the overall design. Microsoft has led the architecture and adoption of the TPM since its inception.
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