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random_seed: use bcrypt instead of the old wincrypt API

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Remove the wincrypt API calls since we don't support XP anymore and
bcrypt is available since Vista, even on Windows Store builds.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Steve Lhomme 2018-04-03 11:44:25 +02:00 committed by Martin Storsjö
parent 347aa8f723
commit abf806f7f1
2 changed files with 14 additions and 12 deletions
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7
configure vendored
View File

@ -1703,12 +1703,12 @@ SYSTEM_FUNCS="
" "
SYSTEM_LIBRARIES=" SYSTEM_LIBRARIES="
bcrypt
sdl sdl
vaapi_1 vaapi_1
vaapi_drm vaapi_drm
vaapi_x11 vaapi_x11
vdpau_x11 vdpau_x11
wincrypt
" "
TOOLCHAIN_FEATURES=" TOOLCHAIN_FEATURES="
@ -2610,7 +2610,7 @@ avdevice_extralibs="libm_extralibs"
avformat_extralibs="libm_extralibs" avformat_extralibs="libm_extralibs"
avfilter_extralibs="pthreads_extralibs libm_extralibs" avfilter_extralibs="pthreads_extralibs libm_extralibs"
avresample_extralibs="libm_extralibs" avresample_extralibs="libm_extralibs"
avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs" avutil_extralibs="bcrypt_extralibs clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
swscale_extralibs="libm_extralibs" swscale_extralibs="libm_extralibs"
# programs # programs
@ -4579,9 +4579,10 @@ check_header windows.h
# so we also check that atomics actually work here # so we also check that atomics actually work here
check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)" check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
check_lib bcrypt "windows.h bcrypt.h" BCryptGenRandom -lbcrypt &&
check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
check_lib ole32 "windows.h" CoTaskMemFree -lole32 check_lib ole32 "windows.h" CoTaskMemFree -lole32
check_lib shell32 "windows.h shellapi.h" CommandLineToArgvW -lshell32 check_lib shell32 "windows.h shellapi.h" CommandLineToArgvW -lshell32
check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom -ladvapi32
check_lib psapi "windows.h psapi.h" GetProcessMemoryInfo -lpsapi check_lib psapi "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss

19
libavutil/random_seed.c
View File

@ -23,9 +23,9 @@
#if HAVE_UNISTD_H #if HAVE_UNISTD_H
#include <unistd.h> #include <unistd.h>
#endif #endif
#if HAVE_WINCRYPT #if HAVE_BCRYPT
#include <windows.h> #include <windows.h>
#include <wincrypt.h> #include <bcrypt.h>
#endif #endif
#include <fcntl.h> #include <fcntl.h>
#include <math.h> #include <math.h>
@ -96,13 +96,14 @@ uint32_t av_get_random_seed(void)
{ {
uint32_t seed; uint32_t seed;
#if HAVE_WINCRYPT #if HAVE_BCRYPT
HCRYPTPROV provider; BCRYPT_ALG_HANDLE algo_handle;
if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL, NTSTATUS ret = BCryptOpenAlgorithmProvider(&algo_handle, BCRYPT_RNG_ALGORITHM,
CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) { MS_PRIMITIVE_PROVIDER, 0);
BOOL ret = CryptGenRandom(provider, sizeof(seed), (PBYTE) &seed); if (BCRYPT_SUCCESS(ret)) {
CryptReleaseContext(provider, 0); NTSTATUS ret = BCryptGenRandom(algo_handle, (UCHAR*)&seed, sizeof(seed), 0);
if (ret) BCryptCloseAlgorithmProvider(algo_handle, 0);
if (BCRYPT_SUCCESS(ret))
return seed; return seed;
} }
#endif #endif