Welcome to the resource topic for 2023/077
Title:
Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal
Authors: Ward Beullens, Vadim Lyubashevsky, Ngoc Khanh Nguyen, Gregor Seiler
Abstract:We give a construction of a 2-round blind signature scheme based on the hardness of standard lattice problems (Ring/Module-SIS/LWE and NTRU) with a signature size of 22 KB. The protocol is round-optimal and has a transcript size that can be as small as 60 KB. This blind signature is around 4 times shorter than the most compact lattice-based scheme based on standard assumptions of del Pino and Katsumato (Crypto 2022) and around 2 times shorter than the scheme of Agrawal et al. (CCS 2022) based on their newly-proposed one-more-SIS assumption. We also give a construction of a ``keyed-verification’’ blind signature scheme in which the verifier and the signer need to share a secret key. The signature size in this case is only 48 bytes, but more work needs to be done to explore the efficiency of the protocol which generates the signature.
ePrint: https://eprint.iacr.org/2023/077
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 .