Affiliations: Department of Computer Science, Jinan University,
Guangzhou, Guangdong, China | College of Information Engineering, Shenzhen
University, Shenzhen, Guangdong, China | School of Computer, South China Normal University,
Guangzhou, Guangdong, China | School of Information Science and Technology, Sun
Yat-Sen University, Guangzhou, Guangdong, China | College of Informatics, South China Agricultural
University, Guangzhou, Guangdong, China | College of Computer Science and Software Engineering,
Shenzhen University, Shenzhen, Guangdong, China | School of engineering, Sun Yat-Sen University,
Guangzhou, Guangdong, China
Note: [] Corresponding author: Kai He, Department of Computer Science,
Jinan University, Guangzhou 510632, Guangdong, China. E-mail: [email protected]
Abstract: A Mobile Ad-hoc Network (MANET) is a collection of wireless nodes
that can dynamically form a network to exchange information without using any
pre-existing fixed network infrastructure. Such networks are more vulnerable to
security attacks than conventional wired networks, and hence cryptographic
schemes are usually used to ensure security for them. It is worth noting that
the nodes in MANETs are with low computational power and communicate over
relatively bandwidth constrained wireless links, and thus the deployed
cryptographic schemes should usually be highly efficient in term of both
computational cost and communication overhead. To ensure the data
confidentiality for MANETs, in this paper, we present a new hierarchical
identity-based encryption (HIBE) scheme, which enjoys the advantages of low
computational cost and light communication overhead. We further propose a new
hierarchical identity-based key encapsulation mechanism (HIBKEM) based on our
HIBE scheme. The proposed HIBKEM scheme is fully secure against adaptive
chosen-ciphertext attack, and has a tight security reduction in the standard model.
Keywords: Hierarchical identity-based encryption, key encapsulation mechanism, tight reduction, standard model
