ECGSC: Elliptic Curve based Generalized Signcryption Scheme

Yiliang Han; Xiaoyuan Yang

Paper 2006/126

ECGSC: Elliptic Curve based Generalized Signcryption Scheme

Yiliang Han and Xiaoyuan Yang

Abstract

Signcryption is a new cryptographic primitive that simultaneously fulfills both the functions of signature and encryption. The definition of generalized signcryption is proposed in the paper firstly. Generalized signcryption has a special feature that provides confidentiality or authenticity separately under the condition of specific inputs. So it is more useful than common ones. Based on ECDSA, a signcryption scheme called ECGSC is designed. It will be equivalent to an AtE(OTP$,MAC) encryption scheme or ECDSA when one of party is absent. A third party can verify the signcryption text publicly in the method of ECDSA. Security properties are proven based on Random Oracle mode: confidentiality (CUF-CPA), unforgeability (UF-CMA) and non-repudiation. Compared with the others, ECGSC presents a 78% reduction in computational cost for typical security parameters for high level security applications.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): yilianghan @ hotmail com
History: 2006-03-30: received
Short URL: https://ia.cr/2006/126
License: CC BY

BibTeX

@misc{cryptoeprint:2006/126,
      author = {Yiliang Han and Xiaoyuan Yang},
      title = {ECGSC: Elliptic Curve based Generalized Signcryption Scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2006/126},
      year = {2006},
      note = {\url{https://eprint.iacr.org/2006/126}},
      url = {https://eprint.iacr.org/2006/126}
}