hashsigs-rs 0.2.1-rc2

// Copyright (C) 2026 quip.network
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: AGPL-3.0-or-later

//! Compile-time SHRINCS scheme-hash suite selection.
//!
//! This seam governs only the scheme hashes used inside FORS-C, hypertree,
//! WOTS-C, and UXMSS computations. Solidity keeps EVM-domain hashes
//! (canonical action hashes, public-key commitments, profile identity) on
//! keccak under every suite; Rust mirrors that split.
//!
//! The suite is selected by the `shrincs_hash_suite_sha2` cfg that build.rs
//! derives from the active profile, not by a Cargo feature directly.

pub const HASH_SUITE_KECCAK_256: u32 = 1;
pub const HASH_SUITE_SHA2_256: u32 = 2;

#[cfg(not(shrincs_hash_suite_sha2))]
mod keccak;
#[cfg(shrincs_hash_suite_sha2)]
mod sha2;

#[cfg(not(shrincs_hash_suite_sha2))]
pub use keccak::HASH_SUITE_ID;
#[cfg(shrincs_hash_suite_sha2)]
pub use sha2::HASH_SUITE_ID;

#[cfg(not(shrincs_hash_suite_sha2))]
pub(crate) use keccak::scheme_hash_parts;
#[cfg(shrincs_hash_suite_sha2)]
pub(crate) use sha2::scheme_hash_parts;