Lattice signature method based on bimodal hypersphere rejection sampling

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By constructing a key and verification process using a bimodal hypersphere rejection sampling lattice signature method, and combining rANS encoding to optimize signature parameters, the problem of large signature size in existing lattice signature schemes is solved, achieving shorter signature length and higher security.

CN122247638BActive Publication Date: 2026-07-17HUBEI UNIV

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: HUBEI UNIV
Filing Date: 2026-05-22
Publication Date: 2026-07-17

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Abstract

This invention discloses a lattice signature method based on bimodal hypersphere rejection sampling. This method constructs a Fiat-Shamir type lattice signature scheme based on bimodal hypersphere rejection sampling. This invention converts the modulus from 2q to q in existing technologies and generates shorter signatures during the signing process while ensuring the correctness of the scheme.

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