Welcome to the resource topic for 2023/067
Title:
Blind signatures from Zero-knowledge arguments
Authors: Paulio L. Barreto, Gustavo H. M. Zanon
Abstract:We propose a novel methodology to obtain $B$lind signatures that is fundamentally based on the idea of hiding part of the underlying plain signatures under a $Z$ero-knowledge argument of knowledge of the whole signature (hence the shorthand, BZ). Our proposal is necessarily non-black-box and stated in the random oracle model. We illustrate the technique by describing two instantiations: a classical setting based on the traditional discrete logarithm assumption, and a post-quantum setting based on the commutative supersingular isogeny Diffie-Hellman (CSIDH) assumption.
ePrint: https://eprint.iacr.org/2023/067
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