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crypto: Use stdint types and make code more readable of secure_memcmp()

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Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Andreas Schneider
2022-06-10 15:19:21 +02:00
committed by Jakub Jelen
parent 86057e60f2
commit 65256ad5f6
1 changed files with 10 additions and 8 deletions
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16
src/crypto_common.c
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@@ -23,12 +23,14 @@
int secure_memcmp(const void *s1, const void *s2, size_t n) int secure_memcmp(const void *s1, const void *s2, size_t n)
{ {
int rc = 0; size_t i;
const unsigned char *p1 = s1; uint8_t status = 0;
const unsigned char *p2 = s2; const uint8_t *p1 = s1;
for (; n > 0; --n) { const uint8_t *p2 = s2;
rc |= *p1++ ^ *p2++;
} for (i = 0; i < n; i++) {
return (rc != 0); status |= (p1[i] ^ p2[i]);
} }
return (status != 0);
}