After intruducing the security demand from the computer area , this paper present the designing aim of the real time audit analysis system ( raas ) , considering the trusted computer system evaluation criteria ( tcsec ) of us dod and common criteria for it security evaluation ( cc ) 本文首先介紹了計算機(jī)領(lǐng)域的安全需求,根據(jù)美國國防部的可信計算機(jī)評測標(biāo)準(zhǔn)( tcsec )和計算機(jī)信息系統(tǒng)的通用安全評價準(zhǔn)則( commoncriteriaforitsecurityevaluation , cc )中提出的安全操作系統(tǒng)的審計標(biāo)準(zhǔn),提出本系統(tǒng)的設(shè)計目的。