| attribute-based conditional proxy re-encryption with chosen-ciphertext security | |
| Zhao Jing; Feng Dengguo; Zhang Zhenfeng | |
| 2010 | |
| 会议名称 | 53rd IEEE Global Communications Conference, GLOBECOM 2010 |
| 会议录名称 | GLOBECOM - IEEE Global Telecommunications Conference |
| 页码 | - |
| 会议日期 | 40883 |
| 会议地点 | Miami, FL, United states |
| 收录类别 | EI |
| 出版地 | United States |
| ISBN | 9781420000000 |
| 部门归属 | (1) State Key Laboratory of Information Security, Graduate School of Chinese Academy of Sciences, Beijing, China; (2) State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China |
| 摘要 | Proxy re-encryption is a cryptographic primitive which enables a ciphertext encrypted under a delegator's public key to be translated into a ciphertext of a delegatee by a semi-trusted proxy. Conditional proxy re-encryption (CPRE) is a variant of proxy re-encryption which allows the delegator to control the delegation of decryption rights with certain conditional value. The existing CPRE schemes left an open problem about how to construct CCA-secure CPRE schemes supporting Boolean predicates over conditions. In this paper, we propose attribute-based CPRE (AB-CPRE) in which the delegator could implement attributed-based control on the delegation of decryption rights by setting conditions in the form of access structure and attribute set. AB-CPRE is suitable for applications where fine-grained control of the decryption delegation is necessary. We formalize definitions and security notions for AB-CPRE and prove that the proposed scheme is chosen-ciphertext secure under the 3-Quotient Decision Bilinear Diffie-Hellman (3-QDBDH) assumption. ©2010 IEEE. |
| 关键词 | Telecommunication |
| 内容类型 | 会议论文 |
| URI标识 | http://ir.iscas.ac.cn/handle/311060/8670 |
| 专题 | 信息安全国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao Jing,Feng Dengguo,Zhang Zhenfeng. attribute-based conditional proxy re-encryption with chosen-ciphertext security[C]. United States,2010:-. |
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