<> ||<>|| = Trusted Platform Module = TPM stands for Trusted Platform Module. TPM devices have two main implementations: an older one, called TPM or TPM 1.2, which has been in use for a number of years in various applications, and a newer implementation called TPM 2, which has started to appear on many modern devices. This document focuses only on TPM2. == TPM2 == [ describe theoretical uses for tpm2 ] === Using the TPM === Given the complexity of using a TPM, it is strongly recommended to use a resource manager (usually ''tabrmd'', or the kernel's own resource manager, if available via '''/dev/tpmrm#''') It is also possible to use the TPM device or simulator directly as a device, see [[TPM/Testing]] ==== Starting a resource manager ==== If the resource manager isn't started automatically: {{{ $ sudo service tpm2-abrmd start }}} Or: {{{ /usr/sbin/tpm2-abrmd -T device }}} {{{ # For simulator ... /usr/sbin/tpm2-abrmd -T mssim }}} ==== Listing PCRs ==== For Ubuntu 19.04 and newer: {{{ $ tpm2_pcrlist }}} For previous releases: {{{ $ tpm2_listpcrs }}} ==== Hashing a value ==== ==== [other useful userland things] ==== == Reference == * [[https://link.springer.com/book/10.1007%2F978-1-4302-6584-9]] * [[https://www.amazon.com/Practical-Guide-TPM-2-0-Platform/dp/1430265833]]