Welcome to the resource topic for 2003/067
Title:
Forking Lemmas in the Ring Signatures’ Scenario
Authors: Javier Herranz, Germán Sáez
Abstract:Pointcheval and Stern introduced in 1996 some forking lemmas useful to prove the security of a family of digital signature schemes. This family includes, for example, Schnorr’s scheme and a modification of ElGamal signature scheme.
In this work we generalize these forking lemmas to the ring signatures’ scenario. In a ring signature scheme, a signer in a subset (or {\it ring}) of potential signers produces a signature of a message in such a way that the receiver can verify that the signature comes from a member of the ring, but cannot know which member has actually signed.
We propose a new ring signature scheme, based on Schnorr signature scheme, which provides unconditional anonymity. We use the generalized forking lemmas to prove that this scheme is existentially unforgeable under adaptive chosen-message attacks, in the random oracle model.
ePrint: https://eprint.iacr.org/2003/067
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 .