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http://ir.ncue.edu.tw/ir/handle/987654321/12148
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| 題名: | Multi-party Key Agreement Protocols with Cheater Identification |
| 作者: | Tseng, Yuh-Min |
| 貢獻者: | 數學系 |
| 關鍵詞: | Cryptography;Secret sharing;Identification;Polynomial;Lagrange interpolation |
| 日期: | 2003-12
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| 上傳時間: | 2012-07-03T03:44:05Z
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| 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 |
| 顯示於類別: | [數學系] 期刊論文
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