Provable Secure Generalized Signcryption

Xu An Wang; Xiaoyuan Yang; Yiliang Han

Paper 2007/173 Original: eprint.iacr.org/2007/173 ↗

Provable Secure Generalized Signcryption

Xu An Wang

Xiaoyuan Yang

Yiliang Han

Abstract

Generalized signcryption which proposed by Han is a new cryptographic primitive which can work as an encryption scheme, a signature scheme or a signcryption scheme[5]. However,the security proof in their paper is not very formal.our contribution are as following:First we give security notions for this new primitive.Secnond,we give an attack to [4]which is the first vision of [5] and propose an improved generalized signcryption scheme. Third, we give new very formal proofs for this new scheme.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
History: 2008-05-21: last updated; 2007-05-12: published
Short URL: https://ia.cr/2007/173
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2007/173,
      author = {Xu An Wang and Xiaoyuan Yang and Yiliang Han},
      title = {Provable Secure Generalized Signcryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2007/173},
      year = {2007},
      url = {https://eprint.iacr.org/2007/173}
}