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PH2 Permutation-based cryptographic post-quantum hash library with duplex construction (C++20)
PetoronHash2 (PH2) is a standalone ARX-based sponge construction that combines:
A 4096-bit internal permutation core
A sponge/duplex architecture with explicit capacity separation
An extendable-output function (XOF)
Memory-hard (HARD) and burn (BURN) modes
A structured tagged absorb scheme
A parameterized architecture suitable for hashing, KDF, and stress-oriented derivation
PH2 is designed as a wide-state cryptographic primitive with explicit domain separation and configurable output length.
https://github.com/01alekseev/PetoronHash2
Petoron | Ivan Alekseev | MIT license