Paper 2009/162

Certificateless Hybrid Signcryption

Fagen Li, Masaaki Shirase, and Tsuyoshi Takagi

Abstract

Signcryption is a cryptographic primitive that fulfills both the functions of digital signature and public key encryption simultaneously, at a cost significantly lower than that required by the traditional signature-then-encryption approach. In this paper, we address a question whether it is possible to construct a hybrid signcryption scheme in the certificateless setting. This question seems to have never been addressed in the literature. We answer the question positively in this paper. In particular, we extend the concept of signcryption tag-KEM to the certificateless setting. We show how to construct a certificateless signcryption scheme using certificateless signcryption tag-KEM. We also give an example of certificateless signcryption tag-KEM.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. Full version of a paper published in ISPEC 2009
Contact author(s)
fagenli @ fun ac jp
History
2009-04-07: received
Short URL
https://ia.cr/2009/162
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2009/162,
      author = {Fagen Li and Masaaki Shirase and Tsuyoshi Takagi},
      title = {Certificateless Hybrid Signcryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2009/162},
      year = {2009},
      url = {https://eprint.iacr.org/2009/162}
}
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