Mercurial > dropbear
comparison dbutil.c @ 835:4095b6d7c9fc ecc
Merge in changes from the past couple of releases
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 18 Oct 2013 21:38:01 +0800 |
| parents | 7dcb46da72d9 a625f9e135a4 |
| children | 30ab30e46452 |
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| 807:75509065db53 | 835:4095b6d7c9fc |
|---|---|
| 890 return DROPBEAR_FAILURE; | 890 return DROPBEAR_FAILURE; |
| 891 } else { | 891 } else { |
| 892 return DROPBEAR_SUCCESS; | 892 return DROPBEAR_SUCCESS; |
| 893 } | 893 } |
| 894 } | 894 } |
| 895 | |
| 896 int constant_time_memcmp(const void* a, const void *b, size_t n) | |
| 897 { | |
| 898 const char *xa = a, *xb = b; | |
| 899 uint8_t c = 0; | |
| 900 size_t i; | |
| 901 for (i = 0; i < n; i++) | |
| 902 { | |
| 903 c |= (xa[i] ^ xb[i]); | |
| 904 } | |
| 905 return c; | |
| 906 } | |
| 907 |