2 * mono-rand-windows-uwp.c: UWP rand support for Mono.
4 * Copyright 2016 Microsoft
5 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
10 #if G_HAVE_API_SUPPORT(HAVE_UWP_WINAPI_SUPPORT)
12 #include "mono/utils/mono-rand-windows.h"
14 MONO_WIN32_CRYPT_PROVIDER_HANDLE
15 mono_rand_win_open_provider (void)
17 MONO_WIN32_CRYPT_PROVIDER_HANDLE provider = 0;
19 if (!BCRYPT_SUCCESS (BCryptOpenAlgorithmProvider (&provider, BCRYPT_RNG_ALGORITHM, NULL, 0)))
26 mono_rand_win_gen (MONO_WIN32_CRYPT_PROVIDER_HANDLE provider, guchar *buffer, size_t buffer_size)
28 g_assert (provider != 0 && buffer != 0);
29 return (BCRYPT_SUCCESS (BCryptGenRandom (provider, buffer, (ULONG) buffer_size, 0))) ? TRUE : FALSE;
33 mono_rand_win_seed (MONO_WIN32_CRYPT_PROVIDER_HANDLE provider, guchar *seed, size_t seed_size)
35 g_assert (provider != 0 && seed != 0);
36 return (BCRYPT_SUCCESS (BCryptGenRandom (provider, seed, (ULONG) seed_size, BCRYPT_RNG_USE_ENTROPY_IN_BUFFER))) ? TRUE : FALSE;
40 mono_rand_win_close_provider (MONO_WIN32_CRYPT_PROVIDER_HANDLE provider)
42 g_assert (provider != 0);
43 BCryptCloseAlgorithmProvider (provider, 0);
46 #else /* G_HAVE_API_SUPPORT(HAVE_UWP_WINAPI_SUPPORT) */
49 // Quiet Visual Studio linker warning, LNK4221, in cases when this source file intentional ends up empty.
50 void __mono_win32_mono_rand_windows_uwp_quiet_lnk4221(void) {}
52 #endif /* G_HAVE_API_SUPPORT(HAVE_UWP_WINAPI_SUPPORT) */