So the evaluation and certification on information security is a fundmental research area . since us dod developed tcsec in 1985 , the security community in the world has made great progress and at last developed cc ( common criteria ) which latter was publicized as international standard 国际社会中，自从1985年美国国防部发布了tcsec （可信计算机系统评估准则）以来，历经十余年的发展，已经制定了得到广泛认可的cc （ it安全通用评估准则） ，并将其作为国际标准发布。
