Efficient certificateless signature schemes

Kyu Young Choi, Jong Hwan Park, Jung Yeon Hwang, Dong Hoon Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

94 Citations (Scopus)


Recently, in order to eliminate the use of certificates in certified public key cryptography and the key-escrow problem in identity based cryptography, the notion of certificateless public key cryptography was introduced. In this paper, to construct an efficient certificateless signature (CLS) scheme, we present a new approach compactly and orthogonally combining short signatures using bilinear maps. Our approach is conceptually simple but effective to improve efficiency greatly. In the proposed CLS scheme a full private key of a user is a single group element and signature verification requires only one pairing operation. In addition, our CLS scheme has a flexible structure which can be easily extended to a certificateless signature scheme with additional properties such as certificateless ring and blind signature schemes.

Original languageEnglish
Title of host publicationApplied Cryptography and Network Security - 5th International Conference, ACNS 2007, Proceedings
PublisherSpringer Verlag
Number of pages16
ISBN (Print)9783540727378
Publication statusPublished - 2007
Event5th International Conference on Applied Cryptography and Network Security, ACNS 2007 - Zhuhai, China
Duration: 2007 Jun 52007 Jun 8

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4521 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other5th International Conference on Applied Cryptography and Network Security, ACNS 2007

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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