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33 lines
824 B
C++
33 lines
824 B
C++
#pragma once
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#include <llarp/crypto/crypto.hpp>
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#include <windows.h>
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#include <type_traits>
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namespace llarp::win32
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{
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/// @brief given a container of data hash it and make it into a GUID so we have a way to
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/// deterministically generate GUIDs
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template <typename Data>
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inline GUID
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MakeDeterministicGUID(Data data)
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{
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ShortHash h{};
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auto hash = [&h](uint8_t* d, size_t size) { crypto::shorthash(h, d, size); };
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if constexpr (std::is_same_v<Data, std::string>)
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hash(reinterpret_cast<uint8_t*>(data.data()), data.size());
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else
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{
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auto dat = llarp_buffer_t{data};
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hash(dat.base, dat.sz);
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}
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GUID guid{};
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std::copy_n(
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h.begin(), std::min(sizeof(GUID), sizeof(ShortHash)), reinterpret_cast<uint8_t*>(&guid));
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return guid;
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}
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} // namespace llarp::win32
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