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#pragma once
#include "nes/common/containers/span.hh"
#include "nes/common/types.hh"
namespace nes::app
{
class sha256
{
static constexpr auto length = u32{ 256 / 8 };
static constexpr auto block_size = u32{ 512 / 8 };
u8 data_[length]{};
public:
static auto hash(span<u8 const>) -> sha256;
auto get_data() const -> span<u8 const, length> { return data_; }
private:
explicit sha256();
auto combine(span<u8 const, block_size>) -> void;
auto get(u32 index) -> u32;
auto set(u32 index, u32 value) -> void;
};
} // namespace nes::app
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