Paper 2010/346

Efficient Generalized Signcryption Schemes

Prashant Kushwah and Sunder Lal

Abstract

Generalized signcryption is a new cryptographic primitive which works as a signcryption scheme, a signature scheme and an encryption scheme as per need. Recently Ji et al. proposed a security model for certificateless generalized signcryption scheme and also proposed a scheme which they claim is secure under the proposed security model. In this paper we show that Ji et al. scheme is not existentially unforgeable against Type-I adversary and propose a simplified certificateless generalized signcryption. We also present an efficient identity based generalized signcryption scheme.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
signcryptiongeneralized signcryptionidentity based cryptographycertificateless cryptography
Contact author(s)
pra ibs @ gmail com
sunder_lal2 @ rediffmail com
History
2010-06-18: received
Short URL
https://ia.cr/2010/346
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2010/346,
      author = {Prashant Kushwah and Sunder Lal},
      title = {Efficient Generalized Signcryption Schemes},
      howpublished = {Cryptology ePrint Archive, Paper 2010/346},
      year = {2010},
      note = {\url{https://eprint.iacr.org/2010/346}},
      url = {https://eprint.iacr.org/2010/346}
}
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