Provably secure identity-based encryption resilient to post-challenge continuous auxiliary input leakage
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- 作者：Jiguo Li ; Yuyan Guo ; Qihong Yu ; Yang Lu and Yichen Zhang
- 刊名：Security and Communication Networks
- 出版年：2016
- 出版时间：10 July 2016
- 年：2016
- 卷：9
- 期：10
- 页码：1016-1024
- 全文大小：199K
- ISSN：1939-0122
文摘
The situation for post-challenge continuous auxiliary input leakage has not been considered in the cryptography schemes for previous literature. We present a semantic-security model with post-challenge continuous auxiliary inputs for identity-based encryption. In this model, the adversary is permitted to obtain some information of the private keys constantly and to query more information after seeing the challenge ciphertext through the side-channel attacks. Furthermore, we present an identity-based encryption scheme resilient to leakage under composite order groups. Our scheme is secure against post-challenge continuous auxiliary input, adaptive chosen-identity, and adaptive chosen plaintext attacks under three static assumptions in the standard model. Compared with existing identity-based encryption schemes under security properties and performance, our scheme is practical. Copyright