hash.ccm

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// SPDX-FileType: Source
// SPDX-FileCopyrightText: 2026 Edward Kmett <ekmett@gmail.com>
// SPDX-License-Identifier: BSD-2-Clause OR Apache-2.0

module;
#include <array>
#include <cstdint>
#include <span>
#include <openssl/sha.h>
 
export module auth.hash;
export import auth.error;
 
namespace auth {

export using digest = std::array<std::uint8_t, 32>;

export inline digest sha256(std::span<const std::uint8_t> data) {
  digest result;
  if (!SHA256(data.data(), data.size(), result.data()))
    throw auth_error("SHA-256 failed");
  return result;
}
 
} // namespace auth