Welcome to the resource topic for 2004/373
Title:
Delegateable Signature Using Witness Indistinguishable and Witness Hiding Proofs
Authors: Chunming Tang, Dingyi Pei, Zhuojun Liu
Abstract:A delegateable signature scheme is a signature scheme where the
owner of the signing key(Alice) can securely delegate to another
party(Bob) the ability to sign on Alice’s behalf on a restricted
subset S of the message space. Barak first defined and
constructed this signature scheme using non-interactive
zero-knowledge proof of knowledge(NIZKPK)\cite{Barak}. In his
delegateable signature scheme, the function of NIZKPK is to
prevent the signing verifier from tell which witness(i.e.
restricted subset) is being used.
Witness indistinguishable(WI) and witness hiding(WH) proof systems
are weaker proof model than zero-knowledge proof and were proposed
by Feige and Shamir in \cite{FS}, however, the verifier cannot
also distinguish the witness which is being used in these two
protocols. In this paper, we construct delegateable signature
scheme using WI and WH proof protocols.
ePrint: https://eprint.iacr.org/2004/373
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 .