/* vim: set expandtab ts=4 sw=4: */
/*
* You may redistribute this program and/or modify it under the terms of
* the GNU General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#include "crypto/random/seed/RtlGenRandomSeed.h"
#include "util/Bits.h"
#include
#include
static BOOLEAN (APIENTRY *RtlGenRandom)(void*, ULONG) = 0;
static int get(struct RandomSeed* rand, uint64_t buff[8])
{
if (!RtlGenRandom) {
return -1;
}
Bits_memset(buff, 0, 64);
int ret = RtlGenRandom(buff, 64);
if (!ret || Bits_isZero(buff, 64)) {
return -1;
}
return 0;
}
static void init()
{
HMODULE hLib = LoadLibrary("advapi32.dll");
RtlGenRandom = (BOOLEAN (APIENTRY *)(void*,ULONG))GetProcAddress(hLib,"SystemFunction036");
}
struct RandomSeed* RtlGenRandomSeed_new(struct Allocator* alloc)
{
init();
return Allocator_clone(alloc, (&(struct RandomSeed) {
.get = get,
.name = "RtlGenRandom() (Windows)"
}));
}