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crypto_memcmp

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-11-15 23:31:27 +01:00
parent 6e7d9194d1
commit 10e53efaee
2 changed files with 21 additions and 0 deletions
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15
lib/crypto.c
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@ -370,3 +370,18 @@ grub_crypto_gcry_error (gcry_err_code_t in)
return GRUB_ERR_NONE;
return GRUB_ACCESS_DENIED;
}
int
grub_crypto_memcmp (void *a, void *b, grub_size_t n)
{
register grub_size_t counter = 0;
grub_uint8_t *pa, *pb;
for (pa = a, pb = b; n; pa++, pb++, n--)
{
if (*pa != *pb)
counter++;
}
return !!counter;
}