Abstract: Both information system and information assurance are complex systems.To demonstrate the efficiency of information assurance better,it needs the quantitative parameters which are used as the indicators for the purpose of security evaluation.This paper presented the indicators for information assurance based on the core of security baseline policy,which is extracted from the juristic documents of national stratagem,management policy,engineering criterion,and technique measurements.The evaluate methods and procedures with double feedbacks were given in this paper.The indicators will help to improve the efficient and persistent of information assurance,and make the information system more secure.

Key words: Indicator, Information assurance, Security baseline policy, Evaluation