Kaoru Hash: A Constant-Free, Message-Emergent Hash Function Specification and Security Rationale

Kaoru Hash is a novel cryptographic blueprint for a deterministic, constant-free hash function where all entropy and structural complexity emerge from the input message itself. Unlike traditional hash functions that rely on fixed tables, seeds, or externally chosen constants, Kaoru Hash derives its security from a self-propagating transformation pipeline based on invertible base conversions, recursive message expansion, and a strict projection over a defined alphabet. This project provides the formal specification, security rationale, and reference implementation. The goal of Kaoru Hash is to democratize cryptographic primitives by removing hidden constants and design opacity, enabling researchers, developers, and the public to independently verify and extend the function's behavior. "Security should not belong to a single organization — it must belong to everyone." — Kaoru Aguilera Katayama