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Abstract out verify logic for fe_normalizes_to_zero{,_var}

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Pieter Wuille
2022-01-31 16:51:10 -05:00
parent 6c31371120
commit 864f9db491
4 changed files with 27 additions and 7 deletions
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4
src/field_5x52_impl.h
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@@ -146,7 +146,7 @@ static void secp256k1_fe_impl_normalize_var(secp256k1_fe *r) {
r->n[0] = t0; r->n[1] = t1; r->n[2] = t2; r->n[3] = t3; r->n[4] = t4;
}
static int secp256k1_fe_normalizes_to_zero(const secp256k1_fe *r) {
static int secp256k1_fe_impl_normalizes_to_zero(const secp256k1_fe *r) {
uint64_t t0 = r->n[0], t1 = r->n[1], t2 = r->n[2], t3 = r->n[3], t4 = r->n[4];
/* z0 tracks a possible raw value of 0, z1 tracks a possible raw value of P */
@@ -169,7 +169,7 @@ static int secp256k1_fe_normalizes_to_zero(const secp256k1_fe *r) {
return (z0 == 0) | (z1 == 0xFFFFFFFFFFFFFULL);
}
static int secp256k1_fe_normalizes_to_zero_var(const secp256k1_fe *r) {
static int secp256k1_fe_impl_normalizes_to_zero_var(const secp256k1_fe *r) {
uint64_t t0, t1, t2, t3, t4;
uint64_t z0, z1;
uint64_t x;