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small cosmetic changes

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This commit is contained in:
Pavol Rusnak 2013-10-24 19:44:54 +02:00
parent 9308fddb7f
commit a439d8674d
1 changed files with 6 additions and 3 deletions
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9
ecdsa.c
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@ -379,8 +379,7 @@ int ecdsa_verify(const uint8_t *pub_key, const uint8_t *sig, const uint8_t *msg,
bn_read_be(hash, &z);
if (bn_is_zero(&r) ||
bn_is_zero(&s) ||
if (bn_is_zero(&r) || bn_is_zero(&s) ||
(!bn_is_less(&r, &order256k1)) ||
(!bn_is_less(&s, &order256k1))) return 2;
@ -410,10 +409,14 @@ int ecdsa_verify(const uint8_t *pub_key, const uint8_t *sig, const uint8_t *msg,
bn_mod(&(res.x), &prime256k1);
bn_mod(&(res.x), &order256k1);
// signature does not match
for (i = 0; i < 9; i++) {
if (res.x.val[i] != r.val[i]) {
return 3;
return 4;
}
}
// all OK
return 0;
}