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| author | Martin Storsjö <martin@martin.st> | 2012-10-11 14:30:23 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2012-10-11 18:49:34 +0300 |
| commit | 1093383d6cf7112d54b849e29c739e957d157b25 (patch) | |
| tree | 9a96c38da6489a1978af4216822f84d4fc1fcd43 /libavutil | |
| parent | 26b3fde6a78f711ba510573eacbc92671a923b2d (diff) | |
| download | ffmpeg-1093383d6cf7112d54b849e29c739e957d157b25.tar.gz | |
random_seed: Support using CryptGenRandom on windows
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/random_seed.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libavutil/random_seed.c b/libavutil/random_seed.c index 8ee4cb716e..ec9caa74b7 100644 --- a/libavutil/random_seed.c +++ b/libavutil/random_seed.c @@ -23,6 +23,10 @@ #if HAVE_UNISTD_H #include <unistd.h> #endif +#if HAVE_CRYPTGENRANDOM +#include <windows.h> +#include <wincrypt.h> +#endif #include <fcntl.h> #include <math.h> #include <time.h> @@ -82,6 +86,17 @@ uint32_t av_get_random_seed(void) { uint32_t seed; +#if HAVE_CRYPTGENRANDOM + 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) + return seed; + } +#endif + if (read_random(&seed, "/dev/urandom") == sizeof(seed)) return seed; if (read_random(&seed, "/dev/random") == sizeof(seed)) |