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Informatica


Leakage-Resilient Certificateless Key Encapsulation Scheme
Volume 29, Issue 1 (2018), pp. 125–155
Pub. online: 1 January 2018      Type: Research Article      Open accessOpen Access
Received
1 June 2017
Accepted
1 January 2018
Published
1 January 2018

Abstract

The previous adversary models of public key cryptography usually have a nature assumption that permanent/temporary secret (private) keys must be kept safely and internal secret states are not leaked to an adversary. However, in practice, it is difficult to keep away from all possible kinds of leakage on these secret data due to a new kind of threat, called “side-channel attacks”. By side-channel attacks, an adversary could obtain partial information of these secret data so that some existing adversary models could be insufficient. Indeed, the study of leakage-resilient cryptography resistant to side-channel attacks has received significant attention recently. Up to date, no work has been done on the design of leakage-resilient certificateless key encapsulation (LR-CL-KE) or public key encryption (LR-CL-PKE) schemes under the continual leakage model. In this article, we propose the first LR-CL-KE scheme under the continual leakage model. Moreover, in the generic bilinear group (GBG) model, we formally prove that the proposed LR-CL-KE scheme is semantically secure against chosen ciphertext attacks for both Type I and Type II adversaries.

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Biographies

Wu Jui-Di

J.-D. Wu received the BS degree from the Department of Mathematics, National Changhua University of Education, Taiwan, in 2006. He received the MS degree from the Department of Mathematics, National Changhua University of Education, Taiwan, in 2008. He is currently a PhD candidate in the Department of Mathematics, National Changhua University of Education, Taiwan. His research interests include applied cryptography and pairing-based cryptography.

Tseng Yuh-Min
ymtseng@cc.ncue.edu.tw

Y.-M. Tseng is currently a professor in the Department of Mathematics, National Changhua University of Education, Taiwan. He is a member of IEEE Computer Society, IEEE Communications Society and the Chinese Cryptology and Information Security Association (CCISA). In 2006, his paper received the Wilkes Award from The British Computer Society. He has published over one hundred scientific journals and conference papers on various research areas of cryptography, security and computer network. His research interests include cryptography, network security, computer network and mobile communications. He serves as an editor of several international journals.

Huang Sen-Shan

S.-S. Huang is currently a professor in the Department of Mathematics, National Changhua University of Education, Taiwan. His research interests include number theory, cryptography, and network security. He received his PhD from the University of Illinois at Urbana-Champaign in 1997 under the supervision of Professor Bruce C. Berndt.

Chou Wei-Chieh

W.-C. Chou received the BS degree from the Department of Mathematics, National Changhua University of Education, Taiwan, in 2015. He received the MS degree from the Department of Mathematics, National Changhua University of Education, Taiwan, in 2017. His research interests include leakage-resilient cryptography and network security.


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Keywords
certificateless encryption continual leakage model side-channel attacks leakage resilience generic bilinear group model

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