Efficient signcryption key encapsulation without random oracles

Fagen Li, Masaaki Shirase, Tsuyoshi Takagi

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

7 Citations (Scopus)

Abstract

Recently, Tan proposed an insider secure signcryption key encapsulation mechanism (KEM) and an insider secure signcryption tag- KEM. His schemes are secure without random oracles (in the standard model). In this paper, we proposed a more efficient construction for signcryption KEM and tag-KEM. We prove their semantic security and existential unforgeability in the standard model. Compared to Tańs schemes, our corresponding schemes have 20% faster speed in the key encapsulation, 33% faster speed in the key decapsulation, 33% shorter public key, 60% shorter private key, and |p| bits shorter ciphertext.

Original languageEnglish
Title of host publicationInformation Security and Cryptology - 4th International Conference, Inscrypt 2008, Revised Selected Papers
Pages47-59
Number of pages13
DOIs
Publication statusPublished - Jul 15 2009
Event4th International Conference on Information Security and Cryptology, Inscrypt 2008 - Beijing, China
Duration: Dec 14 2008Dec 17 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5487
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other4th International Conference on Information Security and Cryptology, Inscrypt 2008
CountryChina
CityBeijing
Period12/14/0812/17/08

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)

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  • Cite this

    Li, F., Shirase, M., & Takagi, T. (2009). Efficient signcryption key encapsulation without random oracles. In Information Security and Cryptology - 4th International Conference, Inscrypt 2008, Revised Selected Papers (pp. 47-59). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5487). https://doi.org/10.1007/978-3-642-01440-6_6