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sys_ss: use BCryptGenRandom on Win32

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This commit is contained in:
Nekotekina 2020-02-29 12:09:39 +03:00
parent 08f3460365
commit a84077f174
1 changed files with 6 additions and 25 deletions
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31
rpcs3/Emu/Cell/lv2/sys_ss.cpp
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@ -5,33 +5,11 @@
#include "Emu/IdManager.h" #include "Emu/IdManager.h"
#include "Emu/Cell/PPUThread.h" #include "Emu/Cell/PPUThread.h"
#ifdef _WIN32 #ifdef _WIN32
#include <Windows.h> #include <Windows.h>
#include <wincrypt.h> #include <bcrypt.h>
const HCRYPTPROV s_crypto_provider = []() -> HCRYPTPROV
{
HCRYPTPROV result;
if (!CryptAcquireContextW(&result, nullptr, nullptr, PROV_RSA_FULL, 0) && !CryptAcquireContextW(&result, nullptr, nullptr, PROV_RSA_FULL, CRYPT_NEWKEYSET))
{
return 0;
}
::atexit([]()
{
if (s_crypto_provider)
{
CryptReleaseContext(s_crypto_provider, 0);
}
});
return result;
}();
#endif #endif
template<> template<>
void fmt_class_string<sys_ss_rng_error>::format(std::string& out, u64 arg) void fmt_class_string<sys_ss_rng_error>::format(std::string& out, u64 arg)
{ {
@ -81,15 +59,18 @@ error_code sys_ss_random_number_generator(u64 pkg_id, vm::ptr<void> buf, u64 siz
std::unique_ptr<u8[]> temp(new u8[size]); std::unique_ptr<u8[]> temp(new u8[size]);
#ifdef _WIN32 #ifdef _WIN32
if (!s_crypto_provider || !CryptGenRandom(s_crypto_provider, size, temp.get())) if (auto ret = BCryptGenRandom(nullptr, temp.get(), size, BCRYPT_USE_SYSTEM_PREFERRED_RNG))
{
fmt::throw_exception("sys_ss_random_number_generator(): BCryptGenRandom failed (0x%08x)" HERE, ret);
}
#else #else
fs::file rnd{"/dev/urandom"}; fs::file rnd{"/dev/urandom"};
if (!rnd || rnd.read(temp.get(), size) != size) if (!rnd || rnd.read(temp.get(), size) != size)
#endif
{ {
fmt::throw_exception("sys_ss_random_number_generator(): Failed to generate pseudo-random numbers" HERE); fmt::throw_exception("sys_ss_random_number_generator(): Failed to generate pseudo-random numbers" HERE);
} }
#endif
std::memcpy(buf.get_ptr(), temp.get(), size); std::memcpy(buf.get_ptr(), temp.get(), size);
return CELL_OK; return CELL_OK;