National Changhua University of Education Institutional Repository : Item 987654321/12148
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题名: Multi-party Key Agreement Protocols with Cheater Identification
作者: Tseng, Yuh-Min
贡献者: 數學系
关键词: Cryptography;Secret sharing;Identification;Polynomial;Lagrange interpolation
日期: 2003-12
上传时间: 2012-07-03T03:44:05Z
出版者: Elsevier
摘要: In 2000, Pieprzyk and Li proposed two multi-party key agreement protocols based on secret sharing. The proposed protocols can achieve the following security goals: key freshness, key confidentiality, group authentication and key confirmation. However, this article points out that their protocols have a weakness for practical applications. A dishonest principal may disturb the protocol to fail, but anyone cannot identify the fraudulent principal. Therefore, an efficient cheater identification process is essential for multi-party key agreement protocols. Two improvements on their protocols are respectively proposed to remove this weakness. In our protocols, the extra computation overhead is small and security goals are not impaired.
關聯: Applied Mathematics and Computation, 145(2-3): 551-559
显示于类别:[數學系] 期刊論文


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