Welcome to the resource topic for 2023/1477
Title:
G+G: A Fiat-Shamir Lattice Signature Based on Convolved Gaussians
Authors: Julien Devevey, Alain Passelègue, Damien Stehlé
Abstract:We describe an adaptation of Schnorr’s signature to the lattice setting, which relies on Gaussian convolution rather than flooding or rejection sampling as previous approaches. It does not involve any abort, can be proved secure in the ROM and QROM using existing analyses of the Fiat-Shamir transform, and enjoys smaller signature sizes (both asymptotically and for concrete security levels).
ePrint: https://eprint.iacr.org/2023/1477
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