diff options
| author | Otto Moerbeek <otto@cvs.openbsd.org> | 2008-03-16 19:47:44 +0000 |
|---|---|---|
| committer | Otto Moerbeek <otto@cvs.openbsd.org> | 2008-03-16 19:47:44 +0000 |
| commit | 184652f0aac51db18e318953058474a7ac4493b6 (patch) | |
| tree | 6e7242d79cb5d0773cd151043408f25fec5d6fb9 /include | |
| parent | 75714c460fcad691f65aac83a88aa5e47478871f (diff) | |
diff from djm@ committed at his request:
introduce two new APIs for requesting strong random numbers:
arc4random_buf() - fill an arbitrary memory range with random numbers
arc4random_uniform() - return a uniformly distributed random number
below
a specified upper bound, avoiding the bias that comes from a naive
"arc4random() % upper_bound" construction.
these mirror similarly-named functions in the kernel;
lots of discussion deraadt@ mcbride@
Diffstat (limited to 'include')
| -rw-r--r-- | include/stdlib.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/stdlib.h b/include/stdlib.h index bf3a88e05da..6c337ba13ab 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -1,4 +1,4 @@ -/* $OpenBSD: stdlib.h,v 1.40 2007/09/03 14:37:02 millert Exp $ */ +/* $OpenBSD: stdlib.h,v 1.41 2008/03/16 19:47:43 otto Exp $ */ /* $NetBSD: stdlib.h,v 1.25 1995/12/27 21:19:08 jtc Exp $ */ /*- @@ -272,6 +272,10 @@ u_int32_t arc4random(void); void arc4random_stir(void); void arc4random_addrandom(unsigned char *, int) __attribute__((__bounded__ (__string__,1,2))); +u_int32_t arc4random_uniform(u_int32_t); +void arc4random_buf(void *, size_t) + __attribute__((__bounded__ (__string__,1,2))); + #endif /* __BSD_VISIBLE */ __END_DECLS |