UCCSSM: Ubiquitous Computing Context-aware Service Supply Mechanism
Daoqing Sun, Qiying Cao · 2007
Ubiquitous computing systems typically have lots of security problems in the area of context-aware service supply by means of classical PKI methods. The service types and service levels, the difference between different environments, the security group authorization and delegation authorization of the services, the identity hiding, the collection and application of the current and the history location and activities of the principal and its neighbor etc are all these unsolved problems. In this paper, UCCSSM, a new novel SPKI-based ubiquitous computing context-aware service supply mechanism is presented to solve these problems. SPKI-based service authorization and service supply are used in UCCSSM to solve above problems while binding these services to the principal using service authorization certificate. By classifying and analyzing the service environment and service resources, the three context-aware levels are given to suit the different needs of context-aware services. The service authorization and service sensing processes, the services supply processes etc of UCCSSM are described in the paper. The performance analysis shows that UCCSSM is a suitable security solution in context-aware ubiquitous computing environments.