svn commit: r247512 - in stable/9/lib/libc: gen stdlib

[Dag-Erling Smørgrav]

Author: des
Date: Fri Mar  1 00:52:57 2013
New Revision: 247512
URL: http://svnweb.freebsd.org/changeset/base/247512

Log:
  MFH (r240107,240111,240361): warn against using weak PRNGs

Modified:
  stable/9/lib/libc/gen/rand48.3
  stable/9/lib/libc/stdlib/random.3
Directory Properties:
  stable/9/lib/libc/   (props changed)

Modified: stable/9/lib/libc/gen/rand48.3
==============================================================================
--- stable/9/lib/libc/gen/rand48.3	Fri Mar  1 00:46:41 2013	(r247511)
+++ stable/9/lib/libc/gen/rand48.3	Fri Mar  1 00:52:57 2013	(r247512)
@@ -12,7 +12,7 @@
 .\"     @(#)rand48.3 V1.0 MB 8 Oct 1993
 .\" $FreeBSD$
 .\"
-.Dd February 2, 2010
+.Dd September 4, 2012
 .Dt RAND48 3
 .Os
 .Sh NAME
@@ -49,6 +49,14 @@
 .Ft void
 .Fn lcong48 "unsigned short p[7]"
 .Sh DESCRIPTION
+.Bf -symbolic
+The functions described in this manual page are not cryptographically
+secure.
+Cryptographic applications should use
+.Xr arc4random 3
+instead.
+.Ef
+.Pp
 The
 .Fn rand48
 family of functions generates pseudo-random numbers using a linear
@@ -174,10 +182,8 @@ It is thus not possible to use values gr
 Note that all three methods of seeding the random number generator
 always also set the multiplicand and addend for any of the six
 generator calls.
-.Pp
-For a more powerful random number generator, see
-.Xr random 3 .
 .Sh SEE ALSO
+.Xr arc4random 3 ,
 .Xr rand 3 ,
 .Xr random 3
 .Sh AUTHORS

Modified: stable/9/lib/libc/stdlib/random.3
==============================================================================
--- stable/9/lib/libc/stdlib/random.3	Fri Mar  1 00:46:41 2013	(r247511)
+++ stable/9/lib/libc/stdlib/random.3	Fri Mar  1 00:52:57 2013	(r247512)
@@ -181,7 +181,6 @@ messages are printed on the standard err
 .Xr arc4random 3 ,
 .Xr lrand48 3 ,
 .Xr rand 3 ,
-.Xr srand 3 ,
 .Xr random 4
 .Sh HISTORY
 These