Title

Cryptanalysis of a certificateless signcryption scheme in the standard model

Publication Type

Journal Article

Publication Date

2-2011

Abstract

Certificateless signcryption is a useful primitive which simultaneously provides the functionalities of certificateless encryption and certificateless signature. Recently, Liu et al. [15] proposed a new certificateless signcryption scheme, and claimed that their scheme is provably secure without random oracles in a strengthened security model, where the malicious-but-passive KGC attack is considered. Unfortunately, by giving concrete attacks, we indicate that Liu et al. certificateless signcryption scheme is not secure in this strengthened security model.

Keywords

Certificateless signcryption, Malicious-but-passive KGC attack, Semantic security, Existential unforgeability

Discipline

Information Security

Research Areas

Information Security and Trust

Publication

Information Sciences

Volume

181

Issue

3

First Page

661

Last Page

667

ISSN

0020-0255

Identifier

10.1016/j.ins.2010.09.037

Publisher

Elsevier

Additional URL

http://dx.doi.org/10.1016/j.ins.2010.09.037