International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Tzong-Chen Wu

Affiliation: National Taiwan University of Science and Technology

Publications

Year
Venue
Title
2003
EPRINT
A Structured Multisignature Scheme from the Gap Diffie-Hellman Group
Chih-Yin Lin Tzong-Chen Wu Fangguo Zhang
In this paper, the authors propose a new structured multisignature scheme that considers the signing order among co-signers. The proposed scheme can resolve signing structures of serial, parallel, and the mix of them. Moreover, the size and the verification of a structured multisignature is the same as those of an individual signature generated by any co-signer. Arithmetically, the proposed scheme makes use of the Gap Diffie-Hellman (GDH) signature scheme recently presented by Boneh, Shacham, and Lynn. Due to the underlying GDH group, our scheme has the merits of simplicity in construction and efficiency in performance.
2003
EPRINT
An identity-based ring signature scheme from bilinear pairings
Chih-Yin Lin Tzong-Chen Wu
At the conference Asiacrypt 2001, Rivest, Shamir and Tauman firstly addressed the concept of ring signature. In this paper we propose an identity-based ring signature scheme from bilinear pairings. As compared with the Zhang-Kim scheme (presented at the conference Asiacrypt 2002), our scheme is more efficient in computation and requires fewer pairing operations.
1992
AUSCRYPT