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https://github.com/ZmnSCPxj/clboss.git
synced 2026-08-14 12:43:19 +02:00
44 lines
1 KiB
C++
44 lines
1 KiB
C++
#include"Sha256/Hash.hpp"
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#include"Util/Str.hpp"
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#include<sodium/utils.h>
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#include<stdexcept>
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namespace {
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std::uint8_t const zero[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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}
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namespace Sha256 {
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bool Hash::valid_string(std::string const& s) {
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return s.size() == 64 && Util::Str::ishex(s);
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}
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Hash::Hash(std::string const& s) {
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auto bytes = Util::Str::hexread(s);
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if (bytes.size() != 32)
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throw std::invalid_argument("Hashes must be 32 bytes.");
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pimpl = std::make_shared<Impl>();
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for (auto i = std::size_t(0); i < 32; ++i)
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pimpl->d[i] = bytes[i];
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}
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Hash::operator std::string() const {
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if (!pimpl)
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return "0000000000000000000000000000000000000000000000000000000000000000";
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return Util::Str::hexdump(pimpl->d, 32);
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}
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Hash::operator bool() const {
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if (!pimpl)
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return false;
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return 0 != sodium_memcmp(zero, pimpl->d, 32);
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}
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bool Hash::operator==(Hash const& i) const {
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auto a = pimpl ? pimpl->d : zero;
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auto b = i.pimpl ? i.pimpl->d : zero;
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return 0 == sodium_memcmp(a, b, 32);
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}
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}
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