Menu
What is the difference between Intel TXT and TPM? What more Intel TXT has to offer as compared to TPM? Basically, I wanted to know how TXT works? Any easy to follow literature for beginners will be highly appreciated!
798
Intel TXT uses a Trusted Platform Module (TPM) and cryptographic techniques to provide measurements of software and platform components so that system software as well as local and remote management applications may use those measurements to make trust decisions.
To your operating system and applications, PTT looks and acts like TPM. However, the difference between PTT vs TPM is that computers with Intel PTT don't require a dedicated processor or memory.
What is Intel® Trusted Execution Technology (Intel® TXT)? Intel® Trusted Execution Technology is a set of hardware extensions to Intel® processors and chipsets that enhance the digital office platform with security capabilities such as measured launch and protected execution.
If your computer is based on the 8th Generation or later Intel® Core™ Processor family, you can rest assured knowing your system has Intel® Platform Trust Technology (Intel® PTT), an integrated TPM that adheres to the 2.0 specifications.
Scolytus is right but let me explain a bit more.
As he said, a TPM is a dependency of TXT but not the other way around. The TPM is where TXT will store the measurements - hash of components - of the platform. If TXT is not supported by a platform but a TPM is still present you still have all those features:
As such you could use trustedgrub (SRTM - Static Root of Trust for Measurements) but not tboot which implements a DRTM (Dynamic Root of Trust for Measurements) aka TXT.
About "how TXT works" see this question.
168
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
