diff mbox series

[FFmpeg-devel,v2,2/2] avutil/random_seed: add support for gcrypt and OpenSSL as source of randomness

Message ID 20230704204128.2510-2-jamrial@gmail.com
State New
Headers show
Series [FFmpeg-devel,v2,1/2] avutil/random_seed: add av_random() | expand

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yinshiyou/make_loongarch64 success Make finished
yinshiyou/make_fate_loongarch64 success Make fate finished
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished

Commit Message

James Almer July 4, 2023, 8:41 p.m. UTC 
Signed-off-by: James Almer <jamrial@gmail.com>
---
 configure               |  2 +-
 libavutil/random_seed.c | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/configure b/configure
index 107d533b3e..d6e78297fe 100755
--- a/configure
+++ b/configure
@@ -3892,7 +3892,7 @@  avfilter_deps="avutil"
 avfilter_suggest="libm stdatomic"
 avformat_deps="avcodec avutil"
 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_suggest="libm stdatomic"
 swresample_deps="avutil"
diff --git a/libavutil/random_seed.c b/libavutil/random_seed.c
index 0ed8f89cc6..363297bae8 100644
--- a/libavutil/random_seed.c
+++ b/libavutil/random_seed.c
@@ -30,6 +30,11 @@ 
 #include <windows.h>
 #include <bcrypt.h>
 #endif
+#if CONFIG_GCRYPT
+#include <gcrypt.h>
+#elif CONFIG_OPENSSL
+#include <openssl/rand.h>
+#endif
 #include <fcntl.h>
 #include <math.h>
 #include <time.h>
@@ -152,6 +157,15 @@  int av_random(uint8_t* buf, size_t len)
 	    err = AVERROR_UNKNOWN;
 #endif
 
+#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;
 }