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timingsafe_bcmp.c

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/home/opencoverage/opencoverage/guest-scripts/openssh/src/openbsd-compat/timingsafe_bcmp.c

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1 /* $OpenBSD: timingsafe_bcmp.c,v 1.1 2010/09/24 13:33:00 matthew Exp $ */ -

2 /* -

4 * -

5 * Permission to use, copy, modify, and distribute this software for any -

6 * purpose with or without fee is hereby granted, provided that the above -

7 * copyright notice and this permission notice appear in all copies. -

8 * -

9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -

10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -

11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR -

12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -

13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN -

14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF -

15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -

16 */ -

17 -

18 /* OPENBSD ORIGINAL: lib/libc/string/timingsafe_bcmp.c */ -

19 -

20 #include "includes.h" -

21 #ifndef HAVE_TIMINGSAFE_BCMP -

22 -

23 int -

24 timingsafe_bcmp(const void *b1, const void *b2, size_t n) -

25 { -

26 const unsigned char *p1 = b1, *p2 = b2; -

27 int ret = 0; -

28 -

for (; n > 0; n--)

n > 0	Description
TRUE	evaluated 20271 times by 3 tests Evaluated by: ssh-keygen test_kex test_sshkey
FALSE	evaluated 1106 times by 3 tests Evaluated by: ssh-keygen test_kex test_sshkey

1106-20271

ret |= *p1++ ^ *p2++;

executed 20271 times by 3 tests: ret |= *p1++ ^ *p2++;

Executed by:

ssh-keygen
test_kex
test_sshkey

20271

return (ret != 0);

executed 1106 times by 3 tests: return (ret != 0);

Executed by:

ssh-keygen
test_kex
test_sshkey

1106

32 } -

33 -

34 #endif /* TIMINGSAFE_BCMP */ -

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