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基于陷门搜索的条件代理重加密方案 被引量：1

A Conditional Proxy Re-encryption Scheme Based on Trapdoor Search
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摘要 为实现对数据细粒度且可扩展的访问控制,通过引入陷门搜索实现快速的条件匹配,提出一个高效的、可用于多条件以及"与"和"或"的复杂组合条件的代理重加密方案,较大地提高了条件代理重加密的效率,可实现高效的按需授权和撤销操作以满足用户对数据的细粒度访问控制需求.同时还引入强一次性签名算法以保证加密过程的安全性,最后在随机预言机模型下证明其在3-QDBDH假设下可抵抗选择密文攻击. To achieve fine-grained and scalable data access control for data,by introducing fast search trapdoor matching conditions,we propose an efficient conditional proxy re-encryption scheme which can solve multiple conditions and＂and＂and＂or＂complex combination of conditions＇ scenario,thus it can greatly improve the efficiency of the program and achieve efficient on-demand license and revocation to meet the demand of users＇ fine-grained access control to data.The program also introduces a strong one-time signature algorithm to ensure the security of the encryption process.Finally,we prove that it can be against the chosen cipher-text attack（CCA）under 3-QDBDH assumption in the random oracle model which show the security of our proposed scheme.
作者 王淑娥 林柏钢
机构地区 福州大学数学与计算机科学学院 网络系统信息安全福建省高校重点实验室
出处 《武汉大学学报（理学版）》 CAS CSCD 北大核心 2014年第6期501-506,共6页 Journal of Wuhan University:Natural Science Edition
基金 国家自然科学基金(61075022) 福建省科技厅重点项目资助项目(2012H0025)
关键词 条件代理重加密 强一次性签名 陷门搜索 细粒度访问控制 云计算 conditional proxy re-encryption a strong one-time signature algorithm search trapdoor fine-grained access control cloud computing
分类号 TP309.7 [自动化与计算机技术—计算机系统结构]
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参考文献15

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二级参考文献22

  • 1BLAZE M, BLEUMER G; STRAUSS M. Divertible protocols and atomic proxy cryptography[A]. E：JROCRYPT'98, International Con- fe：'ence on the Theory and Application of Cryptographic Techniqtms[C]. Espoo, Finland, 1998.127-144.
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  • 10LIBERT B, VERGNAUD D. Unidirectional chosen-ciphertext secure proxy re-encryption[J]. IEEE transactions on Information theory, 2011, 57(3):1786-1802.

共引文献8

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引证文献1

武汉大学学报（理学版）
2014年 第6期

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