Multilevel security trust chain construction method and structure

The invention provides a multilevel security trust chain construction method. The multilevel security trust chain construction method comprises the following steps of step 1, obtaining a structure of a measurement event of every measurement module through a measurable root and sensing the structure of the measurement event of every measurement module to a multilevel security trusted password module and step 2, performing integrity measurement on every measurement module through the multilevel security trusted password module according to the structure of every measurement event and storing a result of the integrity measurement to achieve the multilevel security trust chain transfer. According to the multilevel security trust chain construction method, the multilevel security measurement mode for different levels of password algorithms can be implemented. The invention also provides a multilevel security trust chain construction structure.