Q: What is a Trusted Platform Module (TPM) and what can I use it for? What security services can a TPM provide?
A: A Trusted Platform Module (TPM) is a specialized security hardware module that is integrated with a computer’s motherboard. It can provide tamper-proof security services to the computer and its users. These security services include protected storage for cryptographic keys and data, platform-integrity verification, and strong device and user authentication. The TPM is built according to the specifications of the Trusted Computing Group or the TCG (http://www.trustedcomputing.org). The TCG evolved from what was once the Trusted Computing Platform Alliance (TCPA). TCG is an industry consortium that defines the specifications for trusted computing platforms and networking architectures. The five founders of TCPA/TCG were IBM, Intel, Microsoft, HP, and Compaq.
A TPM is sometimes referred to as an embedded smart card. Although it has important smart card similarities, it also has important differences. Both host microprocessors that provide cryptographic and data protection services. A TPM, however, is bound to a computer platform. A smart card can roam between different computers, provided the computers are equipped with a smart card reader. A TPM is better suited to protect access to sensitive information stored on a computer system. . . .
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