Secure bootstrap usually use integrity measurement
scheme to verify code or data before they are loaded
into memory. As to traditional PC (Personal
Computer) architecture, this method is hard to protect
security of system software and application especially.
This paper researches the different components
running on system and divides them into two kind TCB
(Trusted Computing Base), i.e. HTCB (Hardware
TCB) and STCB (Software TCB). Combing with
technologies such as VM (Virtual Machine), integrity
measurement and sealed storage, prototype lets STCB
bind with HTCB so that trusted chain can be extended
from hardware layer to system software layer. Lastly,
detailed implement ways and means for prototype are
given.