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make the signature fuzzing test much more rigorous:
 ensure that the fuzzed input cases do not match the original (using new
 fuzz_matches_original() function) and check that the verification fails in
 each case
This commit is contained in:
djm@openbsd.org 2015-01-18 19:53:58 +00:00 committed by Damien Miller
parent 80603c0daa
commit 589e69fd82
1 changed files with 6 additions and 3 deletions
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9
regress/unittests/sshkey/test_fuzz.c
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@ -1,4 +1,4 @@
/* $OpenBSD: test_fuzz.c,v 1.1 2014/06/24 01:14:18 djm Exp $ */ /* $OpenBSD: test_fuzz.c,v 1.2 2015/01/18 19:53:58 djm Exp $ */
/* /*
* Fuzz tests for key parsing * Fuzz tests for key parsing
* *
@ -87,8 +87,11 @@ sig_fuzz(struct sshkey *k)
free(sig); free(sig);
TEST_ONERROR(onerror, fuzz); TEST_ONERROR(onerror, fuzz);
for(; !fuzz_done(fuzz); fuzz_next(fuzz)) { for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
sshkey_verify(k, fuzz_ptr(fuzz), fuzz_len(fuzz), /* Ensure 1-bit difference at least */
c, sizeof(c), 0); if (fuzz_matches_original(fuzz))
continue;
ASSERT_INT_NE(sshkey_verify(k, fuzz_ptr(fuzz), fuzz_len(fuzz),
c, sizeof(c), 0), 0);
} }
fuzz_cleanup(fuzz); fuzz_cleanup(fuzz);
} }