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use platform-dependent byteswap

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This commit is contained in:
Thomas Fussell 2017-04-13 21:59:09 -04:00
parent 05c1565a83
commit 28cee5f14b
1 changed files with 27 additions and 2 deletions
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29
source/detail/crypto/sha.cpp
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@ -36,6 +36,31 @@ extern void sha512_hash(const uint8_t *message, size_t len, uint64_t hash[8]);
}
namespace {
#ifdef _MSC_VER
inline std::uint32_t byteswap(std::uint32_t i)
{
return _byteswap_ulong(i);
}
inline std::uint64_t byteswap(std::uint64_t i)
{
return _byteswap_uint64(i);
}
#else
inline std::uint32_t byteswap(std::uint32_t i)
{
return __builtin_bswap32(i);
}
inline std::uint64_t byteswap(std::uint64_t i)
{
return __builtin_bswap64(i);
}
#endif
}
namespace xlnt {
namespace detail {
@ -49,7 +74,7 @@ std::vector<std::uint8_t> sha1(const std::vector<std::uint8_t> &data)
for (auto i : hash)
{
auto swapped = _byteswap_ulong(i);
auto swapped = byteswap(i);
std::copy(
reinterpret_cast<std::uint8_t *>(&swapped),
reinterpret_cast<std::uint8_t *>(&swapped + 1),
@ -70,7 +95,7 @@ std::vector<std::uint8_t> sha512(const std::vector<std::uint8_t> &data)
for (auto i : hash)
{
auto swapped = _byteswap_uint64(i);
auto swapped = byteswap(i);
std::copy(
reinterpret_cast<std::uint8_t *>(&swapped),
reinterpret_cast<std::uint8_t *>(&swapped + 1),