Paper 2004/327
Efficient Identity Based Ring Signature
Sherman S. M. Chow, S. M. Yiu, and Lucas C. K. Hui
Abstract
Identity-based (ID-based) cryptosystems eliminate the need for validity checking of the certificates and the need for registering for a certificate before getting the public key. These two features are desirable especially for the efficiency and the real spontaneity of ring signature, where a user can anonymously sign a message on behalf of a group of spontaneously conscripted users including the actual signer. In this paper, we propose a novel construction of ID-based ring signature which only needs two pairing computations for any group size. The proposed scheme is proven to be existential unforgeable against adaptive chosen message-and-identity attack under the random oracle model, using the forking lemma for generic ring signature schemes. We also consider its extension to support the general access structure.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. In Angelos Keromytis and Moti Yung, editors, Applied Cryptography and Network Security, 3rd International Conference, ACNS 2005, New York, USA, June 7-10, 2005. Volume 3531 of Lecture Notes in Computer Science.
- Keywords
- Identity-based signaturering signaturebilinear pairingsefficiencyreal spontaneitygeneral access structureanonymity
- Contact author(s)
- smchow @ cs hku hk
- History
- 2005-04-24: last of 12 revisions
- 2004-11-26: received
- See all versions
- Short URL
- https://ia.cr/2004/327
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2004/327,
author = {Sherman S. M. Chow and S. M. Yiu and Lucas C. K. Hui},
title = {Efficient Identity Based Ring Signature},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/327},
year = {2004},
url = {https://eprint.iacr.org/2004/327}
}
