From e95464400c6b95bcd9e275dd3f8b68e8914a791b Mon Sep 17 00:00:00 2001 From: deraadt <> Date: Thu, 17 Jul 2014 23:12:28 +0000 Subject: [PATCH] it is 2014, and we still need to encourage people away from srand() and random(). Sigh. --- src/lib/libc/stdlib/rand.3 | 9 ++++++--- src/lib/libc/stdlib/random.3 | 10 ++++++++-- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/src/lib/libc/stdlib/rand.3 b/src/lib/libc/stdlib/rand.3 index 75395976..be5481bb 100644 --- a/src/lib/libc/stdlib/rand.3 +++ b/src/lib/libc/stdlib/rand.3 @@ -29,9 +29,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: rand.3,v 1.15 2014/04/07 17:57:56 schwarze Exp $ +.\" $OpenBSD: rand.3,v 1.16 2014/07/17 23:12:28 deraadt Exp $ .\" -.Dd $Mdocdate: April 7 2014 $ +.Dd $Mdocdate: July 17 2014 $ .Dt RAND 3 .Os .Sh NAME @@ -50,7 +50,10 @@ .Sh DESCRIPTION .Bf -symbolic These interfaces are obsoleted by -.Xr random 3 . +.Xr random 3 , +which is also unsafe. +Consider using +.Xr arc4random 3 . .Ef .Pp The diff --git a/src/lib/libc/stdlib/random.3 b/src/lib/libc/stdlib/random.3 index 2bac4179..1223745c 100644 --- a/src/lib/libc/stdlib/random.3 +++ b/src/lib/libc/stdlib/random.3 @@ -25,9 +25,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: random.3,v 1.23 2014/07/13 14:25:00 tedu Exp $ +.\" $OpenBSD: random.3,v 1.24 2014/07/17 23:12:28 deraadt Exp $ .\" -.Dd $Mdocdate: July 13 2014 $ +.Dd $Mdocdate: July 17 2014 $ .Dt RANDOM 3 .Os .Sh NAME @@ -50,6 +50,12 @@ .Ft char * .Fn setstate "char *state" .Sh DESCRIPTION +.Bf -symbolic +This interface is not cryptographically secure, so consider using +.Xr arc4random 3 +instead. +.Ef +.Pp The .Fn random function uses a non-linear additive feedback random number generator employing