Z-Sigil: A Public-Key Cryptosystem with Chained Selection over a Fiber Bundle of Module-Lattice Keys arxiv.org
Each block picks the next key, because apparently one lattice key was too mainstream; IND-CPA under Module-LWE.
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01 02 Threshold Key Encapsulation Mechanisms via MPC: ML-KEM Compatibility and Optimization eprint.iacr.orgMPC threshold ML-KEM, one scheme keeps NIST formats intact, the other cuts rounds and compatibility, because tradeoffs still exist.