Publication Type
Journal Article
Version
publishedVersion
Publication Date
8-2010
Abstract
In Information Processing Letters (2006), Tan pointed out that the anonymous signcryption scheme proposed by Yang, Wong and Deng (YWD) in ISC 2005 provides neither confidentiality nor anonymity. However, no discussion has been made on how a secure scheme can be made and there is no secure scheme available to date. In this paper, we propose a modification of YWD scheme which resolves the security issues of the original scheme without sacrificing its high efficiency and simple design. Indeed, we show that our scheme achieves confidentiality, existential unforgeability and anonymity with more precise reduction bounds. We also give a variation of our scheme and extend it to a ring signcryption scheme by using the technique due to Boneh, Gentry, Lynn and Shacham.
Keywords
Signcryption, ring signcryption, privacy, anonymity
Discipline
Information Security
Research Areas
Information Systems and Management
Publication
Journal of Computer Security
Volume
18
Issue
3
First Page
451
Last Page
473
ISSN
0926-227X
Identifier
10.5555/1835402.1835406
Publisher
IOS Press
Citation
LI, Chung Ki; YANG, Guomin; WONG, Duncan S.; DENG, Xiaotie; and CHOW, Sherman S. M..
An efficient signcryption scheme with key privacy and its extension to ring signcryption. (2010). Journal of Computer Security. 18, (3), 451-473.
Available at: https://ink.library.smu.edu.sg/sis_research/7399
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
http://doi.org/10.5555/1835402.1835406