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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_5x52_impl.h
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@@ -150,6 +150,20 @@ SECP256K1_INLINE static int secp256k1_fe_equal(const secp256k1_fe_t *a, const se
return ((t[0]^u[0]) | (t[1]^u[1]) | (t[2]^u[2]) | (t[3]^u[3]) | (t[4]^u[4])) == 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 = 4; 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;
for (int i=0; i<32; i++) {