| Summary: | 碩士 === 國立臺灣科技大學 === 資訊管理系 === 96 === An authenticated group key agreement ensure that entity communicates with each other secure from open channel. It privades some security of properties, such as confidentiality of communication, data integrity and identity authentication. It can also avoid eavesdropping, modification or impersonator attack. An group authenticated key agreement with anonymity provides entities with not only a secure channel but also defence of privacy. In 2008, Wan et al. proposed the first group authenticated key agreement with anonymity protocol. The proposed scheme needs to manage the list of true name and pseudonym. And it doesn’t achieve complete anonymity. In this paper, we propose a group authenticated key agreement with anonymity. The proposed mechanism satisfies some properties, such as complete anonymity, implicit key authentication, explicit key authentication, known key security, perfect forward secrecy, key-compromise impersonation, no key control, unknown key-share and legal cheating.
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