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// Copyright 2023 Cryspen Sarl
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
#![no_std]
extern crate alloc;
// NOTE: This Digest trait and the new `digest` trait APIs overlap to some extent.
// See issue #1039
/// A Hash algorithm returning hashes of length `HASH_LEN`.
pub trait Digest<const HASH_LEN: usize> {
/// Writes the digest for the given input byte slice, into `digest` in immediate mode.
fn hash(digest: &mut [u8], payload: &[u8]);
/// Add the `payload` to the digest.
fn update(&mut self, payload: &[u8]);
/// Writes the digest into `digest`.
///
/// Note that the digest state can be continued to be used, to extend the
/// digest.
fn finish(&self, digest: &mut [u8; HASH_LEN]);
/// Reset the digest state.
fn reset(&mut self);
}
pub mod digest;
pub mod kem;