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fix checkmac always failing pre-kex

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--HG--
branch : fuzz
This commit is contained in:
Matt Johnston 2017-06-11 21:39:40 +08:00
parent 937e6cb91e
commit 723ec19eed
1 changed files with 3 additions and 2 deletions
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5
packet.c
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@ -372,9 +372,10 @@ static int checkmac() {
#ifdef DROPBEAR_FUZZ #ifdef DROPBEAR_FUZZ
if (fuzz.fuzzing) { if (fuzz.fuzzing) {
// fail 1 in 1000 times to test error path // fail 1 in 2000 times to test error path.
// note that mac_bytes is all zero prior to kex, so don't test ==0 !
unsigned int value = *((unsigned int*)&mac_bytes); unsigned int value = *((unsigned int*)&mac_bytes);
if (value % 1000 == 0) { if (value % 2000 == 99) {
return DROPBEAR_FAILURE; return DROPBEAR_FAILURE;
} }
return DROPBEAR_SUCCESS; return DROPBEAR_SUCCESS;