Key-policy attribute-based encryption against continual auxiliary input leakage

Attribute-based encryption mechanism can achieve very flexible access control, so it has a wide range of applications in the distributed environment, such as fine-grained access control, audit log applications, cloud storage systems. Key-policy attribute-based encryption (KP-ABE) scheme is especiall...

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Bibliographic Details
Published in:	Information sciences Vol. 470; pp. 175 - 188
Main Authors:	Li, Jiguo, Yu, Qihong, Zhang, Yichen, Shen, Jian
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 01.01.2019
Subjects:	Continual auxiliary input leakage Dual system encryption Key-policy attribute-based encryption Static assumptions Dual system encryption Continual auxiliary input leakage Static assumptions Key-policy attribute-based encryption
ISSN:	0020-0255, 1872-6291
Online Access:	Get full text
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Summary:	Attribute-based encryption mechanism can achieve very flexible access control, so it has a wide range of applications in the distributed environment, such as fine-grained access control, audit log applications, cloud storage systems. Key-policy attribute-based encryption (KP-ABE) scheme is especially suitable for video on demand, pay TV, etc. Most of the existing KP-ABE schemes do not consider the side channel attacks which probably leak some secret information about the cryptosystems. In the paper, we present the formal definition and security model of key-policy attribute-based encryption scheme which is resilient to continual auxiliary input (CAI) leakage. What is more, we present a concrete KP-ABE scheme. The proposed scheme is proved secure under the static assumptions.
ISSN:	0020-0255 1872-6291
DOI:	10.1016/j.ins.2018.07.077