1TPM架构 ⌒录 3大子 Smn nOrtheastern University ● Execution Engine the execution engine runs program code. It performs TPM initialization and measurement taking. o Platform Configuration Registers (PCR) .a Pcr is a 160-bit/20-byte storage location which is used to store integrity measurements Whether a PCR must be used to store a specific measurement(e.g. the CrTM, BlOS.Option ROM code., or, whether it is available for general use, is specified in platform specific specifications6.1 TPM 架构 ⚫ Execution Engine ❖ The execution engine runs program code. It performs TPM initialization and measurement taking. ⚫ Platform Configuration Registers (PCR) ❖ A PCR is a 160-bit/20-byte storage location which is used to store integrity measurements. ❖ Whether a PCR must be used to store a specific measurement (e.g. the CRTM, BIOS…Option ROM code…), or, whether it is available for general use, is specified in platform specific specifications