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Revocable hierarchical identity-based encryption (RHIBE) is a good candidate encryption for secure wireless communications. Its dynamic user management through the hierarchical key generation and revocation is efficient. Most existing RHIBEs are bounded which have to fix the maximum hierarchical depth of users at setup. In this paper, we propose the first unbounded and adaptively-ID secure RHIBE called...
Based on the Technology Acceptance Model (TAM) developed from the theory of reasoned action (TRA) and social psychology research by Davis (1989), this study models the use of the Internet-based modular object-oriented dynamic learning environment (Moodle) by students of the computer science department at Ming Chuan University (MCU), Taiwan. Apart from student demographics and background information...
Social network sites are very popular and draw a number of users' attention in the time of Web 2.0. In this paper, we emphasize the access control research about social network sites from the perspective that roles imply patterns of relationships. We analyze the access control requirement of social network site, and introduce the role into it. Most important of all is that we propose the role base...
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