International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Y. H. Yuen

Publications

Year
Venue
Title
2006
EPRINT
ID-Based Ring Signature Scheme secure in the Standard Model
The only known construction of ID-based ring signature schemes which maybe secure in the standard model is to attach certificates to non-ID-based ring signatures. This method leads to schemes that are somewhat inefficient and it is an open problem to find more efficient and direct constructions. In this paper, we propose two such constructions. Our first scheme, with signature size linear in the cardinality of the ring, is secure in the standard model under the computational Diffie-Hellman assumption. The second scheme, achieving constant signature size, is secure in a weaker attack model (the selective ID and weak chosen message model), under the Diffie-Hellman Inversion assumption.

Coauthors

Man Ho Au (1)
Joseph K. Liu (1)
Duncan S. Wong (1)