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Code Issues Releases Activity

avutil/random_seed: add support for gcrypt and OpenSSL as source of randomness

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Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2023-07-04 19:49:23 -03:00
parent 68e9d2835f
commit b7f4d5fa7e
2 changed files with 17 additions and 1 deletions
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2
configure vendored
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@@ -3892,7 +3892,7 @@ avfilter_deps="avutil"
avfilter_suggest="libm stdatomic" avfilter_suggest="libm stdatomic"
avformat_deps="avcodec avutil" avformat_deps="avcodec avutil"
avformat_suggest="libm network zlib stdatomic" avformat_suggest="libm network zlib stdatomic"
avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt stdatomic" avutil_suggest="clock_gettime ffnvcodec gcrypt libm libdrm libmfx opencl openssl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt stdatomic"
postproc_deps="avutil gpl" postproc_deps="avutil gpl"
postproc_suggest="libm stdatomic" postproc_suggest="libm stdatomic"
swresample_deps="avutil" swresample_deps="avutil"

16
libavutil/random_seed.c
View File

@@ -30,6 +30,11 @@
#include <windows.h> #include <windows.h>
#include <bcrypt.h> #include <bcrypt.h>
#endif #endif
#if CONFIG_GCRYPT
#include <gcrypt.h>
#elif CONFIG_OPENSSL
#include <openssl/rand.h>
#endif
#include <fcntl.h> #include <fcntl.h>
#include <math.h> #include <math.h>
#include <time.h> #include <time.h>
@@ -143,6 +148,17 @@ int av_random_bytes(uint8_t* buf, size_t len)
#endif #endif
err = read_random(buf, len, "/dev/urandom"); err = read_random(buf, len, "/dev/urandom");
if (!err)
return err;
#if CONFIG_GCRYPT
gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
return 0;
#elif CONFIG_OPENSSL
if (RAND_bytes(buf, len) == 1)
return 0;
err = AVERROR_EXTERNAL;
#endif
return err; return err;
} }