diff options
Diffstat (limited to 'lib/isc/entropy.c')
| -rw-r--r-- | lib/isc/entropy.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/isc/entropy.c b/lib/isc/entropy.c index 25ab00218956..af8757f1eb88 100644 --- a/lib/isc/entropy.c +++ b/lib/isc/entropy.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004-2007, 2009 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004-2007, 2009, 2010 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 2000-2003 Internet Software Consortium. * * Permission to use, copy, modify, and/or distribute this software for any @@ -15,7 +15,7 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: entropy.c,v 1.18.332.2 2009/01/18 23:47:41 tbox Exp $ */ +/* $Id: entropy.c,v 1.18.332.4 2010-08-10 23:46:54 tbox Exp $ */ /*! \file * \brief @@ -283,8 +283,11 @@ entropypool_add_word(isc_entropypool_t *rp, isc_uint32_t val) { val ^= rp->pool[(rp->cursor + TAP3) & (RND_POOLWORDS - 1)]; val ^= rp->pool[(rp->cursor + TAP4) & (RND_POOLWORDS - 1)]; val ^= rp->pool[(rp->cursor + TAP5) & (RND_POOLWORDS - 1)]; - rp->pool[rp->cursor++] ^= - ((val << rp->rotate) | (val >> (32 - rp->rotate))); + if (rp->rotate == 0) + rp->pool[rp->cursor++] ^= val; + else + rp->pool[rp->cursor++] ^= + ((val << rp->rotate) | (val >> (32 - rp->rotate))); /* * If we have looped around the pool, increment the rotate |