Module: libav Branch: master Commit: abf806f7f1601c7e54de7f863bbb816af144a88c
Author: Steve Lhomme <[email protected]> Committer: Martin Storsjö <[email protected]> Date: Tue Apr 3 11:44:25 2018 +0200 random_seed: use bcrypt instead of the old wincrypt API 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 <[email protected]> --- configure | 7 ++++--- libavutil/random_seed.c | 19 ++++++++++--------- 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/configure b/configure index 3c7b6a0..465fdcf 100755 --- a/configure +++ b/configure @@ -1703,12 +1703,12 @@ SYSTEM_FUNCS=" " SYSTEM_LIBRARIES=" + bcrypt sdl vaapi_1 vaapi_drm vaapi_x11 vdpau_x11 - wincrypt " TOOLCHAIN_FEATURES=" @@ -2610,7 +2610,7 @@ avdevice_extralibs="libm_extralibs" avformat_extralibs="libm_extralibs" avfilter_extralibs="pthreads_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" # programs @@ -4579,9 +4579,10 @@ check_header windows.h # so we also check that atomics actually work here 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 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_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss diff --git a/libavutil/random_seed.c b/libavutil/random_seed.c index 089d883..388cb40 100644 --- a/libavutil/random_seed.c +++ b/libavutil/random_seed.c @@ -23,9 +23,9 @@ #if HAVE_UNISTD_H #include <unistd.h> #endif -#if HAVE_WINCRYPT +#if HAVE_BCRYPT #include <windows.h> -#include <wincrypt.h> +#include <bcrypt.h> #endif #include <fcntl.h> #include <math.h> @@ -96,13 +96,14 @@ uint32_t av_get_random_seed(void) { uint32_t seed; -#if HAVE_WINCRYPT - HCRYPTPROV provider; - if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL, - CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) { - BOOL ret = CryptGenRandom(provider, sizeof(seed), (PBYTE) &seed); - CryptReleaseContext(provider, 0); - if (ret) +#if HAVE_BCRYPT + BCRYPT_ALG_HANDLE algo_handle; + NTSTATUS ret = BCryptOpenAlgorithmProvider(&algo_handle, BCRYPT_RNG_ALGORITHM, + MS_PRIMITIVE_PROVIDER, 0); + if (BCRYPT_SUCCESS(ret)) { + NTSTATUS ret = BCryptGenRandom(algo_handle, (UCHAR*)&seed, sizeof(seed), 0); + BCryptCloseAlgorithmProvider(algo_handle, 0); + if (BCRYPT_SUCCESS(ret)) return seed; } #endif _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
