Design of Security Architecture for Beyond 3G Mobile Terminals (特集:プライバシを保護するコンピュータセキュリティ技術)

概要

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Mobile services for cellular phones are now extending beyond phone services, and into several aspect of communication services. To support the various services, mobile terminals require more complicated architecture and sophisticated human interface. Furthermore, the cost of developing mobile terminals is increasing. Therefore, some open architecture, which is extensible for adding functions, will be required. In this paper, we assume a beyond 3G mobile terminal which has open and extensible platform, and we design security architecture for it. In the open architecture, the mobile terminal has basic functions and the user can easily extend the functions by adding external devices. The security architecture also dynamically changes the security policy of the terminal, when the functions are changed. Our security architecture can reduce the complexity of management of the security policy in the mobile terminal, and expand a variety of services. Although the open architecture has many advantages, it is prone to compromise in the system security. We discuss the threats against the open architecture and propose security functions to protect against these threats. Our architecture will be suitable for beyond 3G mobile terminals that have an open and flexible platform. We believe our research includes useful information for designing future mobile services.
一般社団法人情報処理学会の論文
2004-08-15