LaMS: A p-adic Layered Modulus Switching for Provable Dual Attacks on LWE

본문 미리보기

The Learning with Errors (LWE) problem is a central foundation for post-quantum schemes such as Kyber and Dilithium. Dual attacks are among the main tools for assessing the concrete hardness of LWE instances. At EUROCRYPT 2024, Pouly and Shen introduced the first provable dual attack against LWE. Subsequently, at ASIACRYPT 2025, Qu and Xu incorporated modulus switching into this framework by recovering the guessed secret mod several small primes and recombining the resulting residues via the Chi