A 256-bit cryptographic hash function grounded in classical Chinese cosmological algebra: Prior Heaven Ba-Gua (Z₂³), Zhong-Tian non-homomorphic bijection, Posterior Heaven Ba-Gua non-Abelian walk on D₈ (order 16), and Z₄5 = Z₉ x Z₅ DLP mixing with phi (45) =24 output symbols matching the Twenty-Four Mountain. Three theorems proven. Avalanche 50. 6%, zero collisions/50k, chi2 p=0. 313. Classical 2¹28, quantum 2⁸5 security bits. Novel: physical hardness via thermodynamic entropy (Landauer principle).
Yao-Kai Kao (Sun,) studied this question.