The purposes of this study is development of information security evaluation model for governments to analyze domestic and foreign existing models. Recent domestic information security certification systems have several problems, because shortage of organic connectivity each other. Therefore we analysis on domestic and foreign existing models, specify security requirements, evaluation basis and other facts of models, optimize these facts for governments, and develop new model for domestic governments.

Today, Digital Right Management (DRM) is used to protect copyrights of digital contents from illegal reproduction and redistribution.Unfortunately, current DRM systems are causing user's discomfort because of lack of mutual compatibility. In order to overcome this drawback, technologies for interoperability of heterogeneous DRM systems are developing. In this paper, we study the protection profile for conversion technologies of heterogeneous DRM systems, using the Common Criteria. Especially, this paper is written by reuse of the existing protection profile. Therefore, performance analysis reveals that efficiency of time and cost is significantly improved. This protection profile can be used by contents provider and administrator who manage user's copyrights to reference data for copyright protection.

The openness of the Web allows any user to access any type of information easily at any time and anywhere. However, with function of easy access for useful information, internet has dysfunctions of providing users with harmful contents indiscriminately. Some information, such as adult content, is not appropriate for children. To protect children from these harmful contents, many filtering softwares are developed. However, these softwares can not prevent harmful contents, perfectly, because of some limitations. In this paper, we analyze existing eleven filtering softwares and state the limitation of these softwares. Furthermore, we propose requirements for new filtering software which overcomes the limitations, and describe framework of the new software..

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