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Preliminary Cryptanalysis of the Biscuit Signature Scheme
Feb. 2, 2024, 8:54 a.m. |
IACR News www.iacr.org
ePrint Report: Preliminary Cryptanalysis of the Biscuit Signature Scheme
Charles Bouillaguet, Julia Sauvage
Biscuit is a recent multivariate signature scheme based on the MPC-in-the-Head paradigm. It has been submitted to the NIST competition for additional signature schemes. Signatures are derived from a zero-knowledge proof of knowledge of the solution of a structured polynomial system. This extra structure enables efficient proofs and compact signatures. This short note demonstrates that it also makes these polynomial systems easier to solve than random ones. …
competition cryptanalysis eprint report head knowledge mpc nist paradigm proof report signature signatures solution
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