diff options
| author | Andrey A. Chernov <ache@FreeBSD.org> | 2001-04-23 02:29:10 +0000 |
|---|---|---|
| committer | Andrey A. Chernov <ache@FreeBSD.org> | 2001-04-23 02:29:10 +0000 |
| commit | 7708205cb774243dfe96540ebbd20970ac48acdd (patch) | |
| tree | e8894b6d6337659ffd0ead70a9731840e66eff79 /lib/libc/stdlib/rand.3 | |
| parent | b8ff2fec46f03ff6032de2cad19929ef3665251d (diff) | |
Notes
Diffstat (limited to 'lib/libc/stdlib/rand.3')
| -rw-r--r-- | lib/libc/stdlib/rand.3 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/libc/stdlib/rand.3 b/lib/libc/stdlib/rand.3 index b47ff67b8809..67955d9ea0f0 100644 --- a/lib/libc/stdlib/rand.3 +++ b/lib/libc/stdlib/rand.3 @@ -42,6 +42,7 @@ .Sh NAME .Nm rand , .Nm srand , +.Nm sranddev , .Nm rand_r .Nd bad random number generator .Sh LIBRARY @@ -50,6 +51,8 @@ .Fd #include <stdlib.h> .Ft void .Fn srand "unsigned seed" +.Ft void +.Fn sranddev void .Ft int .Fn rand void .Ft int @@ -83,6 +86,13 @@ If no value is provided, the functions are automatically seeded with a value of 1. .Pp +The +.Fn sranddev +routine initialize a seed using +.Xr urandom 4 +random number device which returns good random numbers, +suitable for cryptographic use. +.Pp .Fn rand_r provides the same functionality as .Fn rand . @@ -90,7 +100,8 @@ A pointer to the context value .Fa ctx must be supplied by the caller. .Sh SEE ALSO -.Xr random 3 +.Xr random 3 , +.Xr urandom 4 .Sh STANDARDS The .Fn rand |