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Switch all EC/ECDSA logic from num to scalar

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This commit is contained in:
Pieter Wuille
2014-11-26 17:26:39 +01:00
parent 6794be6080
commit f24041d6aa
15 changed files with 285 additions and 192 deletions
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14
src/field_10x26_impl.h
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@@ -152,6 +152,20 @@ SECP256K1_INLINE static int secp256k1_fe_equal(const secp256k1_fe_t *a, const se
| (t[5]^u[5]) | (t[6]^u[6]) | (t[7]^u[7]) | (t[8]^u[8]) | (t[9]^u[9])) == 0;
}
static int secp256k1_fe_cmp_var(const secp256k1_fe_t *a, const secp256k1_fe_t *b) {
#ifdef VERIFY
VERIFY_CHECK(a->normalized);
VERIFY_CHECK(b->normalized);
secp256k1_fe_verify(a);
secp256k1_fe_verify(b);
#endif
for (int i = 9; i >= 0; i--) {
if (a->n[i] > b->n[i]) return 1;
if (a->n[i] < b->n[i]) return -1;
}
return 0;
}
static int secp256k1_fe_set_b32(secp256k1_fe_t *r, const unsigned char *a) {
r->n[0] = r->n[1] = r->n[2] = r->n[3] = r->n[4] = 0;
r->n[5] = r->n[6] = r->n[7] = r->n[8] = r->n[9] = 0;