1 files changed, 67 insertions, 0 deletions
diff --git a/vcpkg/ports/libtommath/bcrypt.patch b/vcpkg/ports/libtommath/bcrypt.patch
new file mode 100644
index 0000000..dc59d79
--- /dev/null
+++ b/vcpkg/ports/libtommath/bcrypt.patch
@@ -0,0 +1,67 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -22,8 +22,10 @@
+ #-----------------------------------------------------------------------------
+ include(GNUInstallDirs)
+ include(CheckIPOSupported)
+ include(CMakePackageConfigHelpers)
++include(CMakePushCheckState)
++include(CheckSymbolExists)
+ # default is "No tests"
+ option(BUILD_TESTING "" OFF)
+ include(CTest)
+ include(sources.cmake)
+@@ -118,8 +120,19 @@
+ target_link_options(${PROJECT_NAME} BEFORE PRIVATE
+     ${LTM_LD_FLAGS}
+ )
+ 
++if(MSVC)
++    cmake_push_check_state()
++    set(CMAKE_REQUIRED_LIBRARIES bcrypt)
++    check_symbol_exists(BCryptGenRandom "Windows.h;bcrypt.h" BCRYPT_AVAILABLE)
++    cmake_pop_check_state()
++    if(BCRYPT_AVAILABLE)
++        target_compile_definitions(${PROJECT_NAME} PRIVATE LTM_WIN32_BCRYPT)
++        target_link_libraries(${PROJECT_NAME} PRIVATE bcrypt)
++    endif()
++endif()
++
+ set(PUBLIC_HEADERS tommath.h)
+ set(C89 False CACHE BOOL "(Usually maintained automatically) Enable when the library is in c89 mode to package the correct header files on install")
+ if(C89)
+     list(APPEND PUBLIC_HEADERS tommath_c89.h)
+diff --git a/bn_s_mp_rand_platform.c b/bn_s_mp_rand_platform.c
+--- a/bn_s_mp_rand_platform.c
++++ b/bn_s_mp_rand_platform.c
+@@ -28,8 +28,19 @@
+ #endif
+ 
+ #define WIN32_LEAN_AND_MEAN
+ #include <windows.h>
++
++#ifdef LTM_WIN32_BCRYPT
++#include <bcrypt.h>
++#pragma comment(lib, "bcrypt")
++
++static mp_err s_read_wincsp(void *p, size_t n)
++{
++   return BCRYPT_SUCCESS(BCryptGenRandom(NULL, (PUCHAR)p, (ULONG)n,
++                                         BCRYPT_USE_SYSTEM_PREFERRED_RNG)) ? MP_OKAY : MP_ERR;
++}
++#else
+ #include <wincrypt.h>
+ 
+ static mp_err s_read_wincsp(void *p, size_t n)
+ {
+@@ -45,8 +56,9 @@
+       hProv = h;
+    }
+    return CryptGenRandom(hProv, (DWORD)n, (BYTE *)p) == TRUE ? MP_OKAY : MP_ERR;
+ }
++#endif
+ #endif /* WIN32 */
+ 
+ #if !defined(BN_S_READ_WINCSP_C) && defined(__linux__) && defined(__GLIBC_PREREQ)
+ #if __GLIBC_PREREQ(2, 25)