Sequential aggregate signatures made shorter

Kwangsu Lee, Dong Hoon Lee, Moti Yung

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

11 Citations (Scopus)


Sequential aggregate signature (SAS) is a special type of public-key signature that allows a signer to add his signature into a previous aggregate signature in sequential order. In this case, since many public keys are used and many signatures are employed and compressed, it is important to reduce the sizes of signatures and public keys. Recently, Lee et al. proposed an efficient SAS scheme with short public keys and proved its security without random oracles under static assumptions. In this paper, we propose an improved SAS scheme that has a shorter signature size compared with that of Lee et al.'s SAS scheme. Our SAS scheme is also secure without random oracles under static assumptions. To achieve the improvement, we devise a new public-key signature scheme that supports multi-users and public re-randomization. Compared with the SAS scheme of Lee et al., our SAS scheme employs new techniques which allow us to reduce the size of signatures by increasing the size of the public keys (obviously, since signature compression is at the heart of aggregate signature this is a further step in understanding the aggregation capability of such schemes).

Original languageEnglish
Title of host publicationApplied Cryptography and Network Security - 11th International Conference, ACNS 2013, Proceedings
Number of pages16
Publication statusPublished - 2013
Event11th International Conference on Applied Cryptography and Network Security, ACNS 2013 - Banff, AB, Canada
Duration: 2013 Jun 252013 Jun 28

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7954 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other11th International Conference on Applied Cryptography and Network Security, ACNS 2013
CityBanff, AB

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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