Welcome to the resource topic for 2004/148
Title:
Provably Secure Delegation-by-Certification Proxy Signature Schemes
Authors: Zuowen Tan, Zhuojun Liu
Abstract:In this paper, we first show that previous proxy
signature schemes by delegation with certificate are not provably
secure under adaptive-chosen message attacks and adaptive-chosen
warrant attacks. The schemes do not provide the strong
undeniability. Then we construct a proxy signature scheme by
delegation with certificate based on Co-GDH group from bilinear
map. Our proxy signature scheme is existentially unforgeable
against adaptive-chosen message attacks and adaptive-chosen
warrant attacks in random oracle model. We adopt a straight method
of security reduction in which our scheme’s security is reduced to
hardness of the computational co-Diffie-Hellem problem. The
proposed signature scheme is the first secure
delegation-by-certificate proxy signature based on co-GDH groups
from bilinear maps under the formal security model in random
oracle model.
ePrint: https://eprint.iacr.org/2004/148
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .