Provably secure certificate-based encryption with leakage resilience


          

刊名：Theoretical computer science
作者：Guo, Yuyan（Fujian Normal Univ, Coll Math & Informat, Fuzhou 350117, Fujian, Peoples R China）
Li, Jiguo（Fujian Normal Univ, Coll Math & Informat, Fuzhou 350117, Fujian, Peoples R China）
Lu, Yang（Hohai Univ, Coll Comp & Informat, Nanjing 211100, Jiangsu, Peoples R China）
Zhang, Yichen（Fujian Normal Univ, Coll Math & Informat, Fuzhou 350117, Fujian, Peoples R China）
Zhang, Futai（Nanjing Normal Univ, Sch Comp Sci & Technol, Nanjing 210096, Jiangsu, Peoples R China）
刊号：738LB004
ISSN：0304-3975
出版年：2018
年卷期：2018, vol.711
页码：1-10
总页数：10
分类号：TP3
关键词：Certificate-based encryption；Leakage resilience；Side-channel attack
参考中译：
语种：eng
文摘：The security of encryption schemes, in general, has been considered in an ideal environment, where the adversary cannot obtain the secret internal state of the scheme. However, in the real world, an adversary can gain partial information on the secret key through a key leakage attack. To avoid this attack, it is crucial to construct an encryption scheme with leakage resilience. In this paper, we first define a secure leakage-resilient model of certificate-based encryption. In this model, the adversary is permitted to get some information on the secret value through a side-channel attack. Moreover, we put forward a new leakage-resilient certificate-based encryption scheme. This scheme is secure against chosen ciphertext attack under the decisional 3-party Diffie-Hellman assumption in the standard model. Compared with the existing two certificate-based encryption schemes, our scheme enhances the security property, and the execution time of the proposed scheme is less than that of the two certificate-based encryption schemes. (C) 2017 Elsevier B.V. All rights reserved.



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