| 多接收者环境下的匿名性和密文长度缩短的匿名广播加密算法 |
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| 引用本文： | 张海滨,武传坤,魏凌波.多接收者环境下的匿名性和密文长度缩短的匿名广播加密算法[J].中国科学院研究生院学报,2010,27(1):90-106. |
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| 作者姓名： | 张海滨 武传坤 魏凌波 |
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| 作者单位： | 1. 中国科学院软件所信息安全国家重点实验室,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院软件所信息安全国家重点实验室,北京,100190 |
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| 基金项目： | supported by the National Grand Fundamental Research 973 Program of China(2007CB807902); the National High-Tech Research and Development Plan of China(2006AA01Z423) |
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| 摘 要： | 形式化构建了在多用户环境和随机数复用多用户环境下的匿名性安全模型,并证明了其安全性;同时提出了2种针对匿名性的可复制测试.基于这些结果,构造了一个通用的密文长度缩短的匿名广播加密算法.
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| 关 键 词： | 匿名性 随机数 多接受者 广播加密 匿名广播加密 |
| 收稿时间： | 2009-03-02 |
| 修稿时间： | 2009-04-27 |
Key privacy in multi-recipient setting and shortened private broadcast encryption |
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| ZHANG Hai-Bin,WU Chuan-Kun,WEI Ling-Bo.Key privacy in multi-recipient setting and shortened private broadcast encryption[J].Journal of the Graduate School of the Chinese Academy of Sciences,2010,27(1):90-106. |
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| Authors: | ZHANG Hai-Bin WU Chuan-Kun WEI Ling-Bo |
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| Institution: | 1. State Key Laboratory of Information Security,Institute of Software of the Chinese Academy of Sciences,Beijing 100190,China;
2. Graduate University of the Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | In this paper,we formally built the security models on key privacy in the multi-recipient and randomness re-using multi-recipient setting and proved their security. Two associated reproducibility tests concerning key privacy were proposed. Based on these results,we constructed a general shortened private broadcast encryption scheme which approximately halves ciphertext overhead and computational cost. |
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| Keywords: | key privacy randomness multi-recipient broadcast encryption private broadcast encryption |
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