| 安全组播密钥批更新算法研究 |
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| 引用本文： | 屈劲,葛建华,蒋铭.安全组播密钥批更新算法研究[J].电子学报,2003,31(7):1046-1048. |
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| 作者姓名： | 屈劲 葛建华 蒋铭 |
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| 作者单位： | 1. 西安电子科技大学计算机网络与信息安全教育部重点实验室,陕西西安 710071;2. 上海交通大学电子信息学院,上海 200030 |
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| 基金项目： | 国家教育部高校骨干教师资助项目，陕西省自然科学基金 (No 2 0 0 2f0 8) |
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| 摘 要： | 密钥更新效率是影响组播安全性能的重要因素,将密钥组织成密钥逻辑树,对密钥树进行周期性批更新是提高密钥分发效率、降低密钥管理系统和用户负担的有效途径.本文提出一种密钥批更新算法,利用该算法可以进一步降低密钥更新对密钥管理系统和用户的负担;并利用该算法分析了密钥批更新的性能.
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| 关 键 词： | 组播 密钥分发 密钥树 指数分布 |
| 文章编号： | 0372-2112(2003)07-1046-03 |
| 收稿时间： | 2001-04-04 |
On Batch Rekey Algorithm for Secure Multicast |
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| QU Jin ,GE Jian-hua ,JIANG Ming.On Batch Rekey Algorithm for Secure Multicast[J].Acta Electronica Sinica,2003,31(7):1046-1048. |
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| Authors: | QU Jin GE Jian-hua JIANG Ming |
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| Affiliation: | 1. Ministry of Education Key Lab of Computer Network and Information Security,Xidian University,Xi'an,Shaanxi 710071,China;2. School of Electronics & Information Technology,Shanghai Jiaotong University,Shanghai 200030,China |
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| Abstract: | The efficiency of re-keying is a main factor that influences the performance of secure multicast.Grouping keys into logical tree and periodic batch re-keying for users join/leave are effective ways to improve the efficiency of re-keying and reduce the burden that re-keying puts on key management as well as users.In this paper,we present a re-key algorithm which reduces the burden that re-keying put on key management system and users.We then investigate the performance of batch re-keying using our algorithm. |
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| Keywords: | multicast key distribution key tree exponential distribution |
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