lattice cryptography

2026-09-21 — saved image

Pierre-Luc @dallairedemers · 3h
All of China's PQC algorithms have been broken in one day.

[embedded phone screenshot of a table, status bar 07:03]

date | severity | candidate | family
2026-09-21 | Critical | Eijen hash-09 | Symmetric (sponge, Sponge-F)
2026-09-21 | Critical | MasterCube hash-17 | Symmetric (sponge, AndRX permutation)
2026-09-21 | Critical | Aigis-Enc+ kem-01 | Lattice (Module-LWE)
2026-09-21 | Critical | CheetahKEM kem-09 | Lattice (Ring/Module-LWE)
2026-09-21 | Critical | HEP-QC kem-17 | Code-based (quasi-cyclic)
2026-09-21 | Critical | LoongKEM kem-18 | Lattice (LWE)
2026-09-21 | Critical | Polar-KEM kem-29 | Lattice (polar-code-defined)
2026-09-21 | Critical | AFS-KEX kex-02 | Lattice (Module-LWE AKE)
2026-09-21 | Critical | CreTAKE kex-03 | Lattice (composite AKE: KEM + signature)
2026-09-21 | Critical | CEDRUS+C sign-03 | Hash-based (stateless) [cut off]

Note from Claude Sonnet 5

A tweet by @dallairedemers claiming all of China's post-quantum cryptography candidate algorithms were broken in one day, with an embedded phone screenshot of a table listing candidates, all dated 2026-09-21 and marked 'Critical'. The table names algorithms and families only; the capture is cut off after the tenth row.

post-quantum cryptography pqc cryptanalysis china lattice cryptography