frost/secp256k1-zkp
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Make secp256k1_{fe,ge,gej}_verify work as no-op if non-VERIFY

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This commit is contained in:
Pieter Wuille
2023-05-09 12:46:00 -04:00
parent f20266722a
commit 0a2e0b2ae4
5 changed files with 15 additions and 119 deletions
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9
src/field_5x52_impl.h
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@@ -33,8 +33,8 @@
* 0 or 1, and its value is already reduced modulo the order of the field.
*/
#ifdef VERIFY
static void secp256k1_fe_verify(const secp256k1_fe *a) {
#ifdef VERIFY
const uint64_t *d = a->n;
int m = a->normalized ? 1 : 2 * a->magnitude, r = 1;
/* secp256k1 'p' value defined in "Standards for Efficient Cryptography" (SEC2) 2.7.1. */
@@ -52,8 +52,9 @@ static void secp256k1_fe_verify(const secp256k1_fe *a) {
}
}
VERIFY_CHECK(r == 1);
}
#endif
(void)a;
}
static void secp256k1_fe_get_bounds(secp256k1_fe *r, int m) {
VERIFY_CHECK(m >= 0);
@@ -422,11 +423,9 @@ SECP256K1_INLINE static void secp256k1_fe_mul_int(secp256k1_fe *r, int a) {
}
SECP256K1_INLINE static void secp256k1_fe_add_int(secp256k1_fe *r, int a) {
#ifdef VERIFY
secp256k1_fe_verify(r);
VERIFY_CHECK(a >= 0);
VERIFY_CHECK(a <= 0x7FFF);
#endif
r->n[0] += a;
#ifdef VERIFY
r->magnitude += 1;
@@ -436,9 +435,7 @@ SECP256K1_INLINE static void secp256k1_fe_add_int(secp256k1_fe *r, int a) {
}
SECP256K1_INLINE static void secp256k1_fe_add(secp256k1_fe *r, const secp256k1_fe *a) {
#ifdef VERIFY
secp256k1_fe_verify(a);
#endif
r->n[0] += a->n[0];
r->n[1] += a->n[1];
r->n[2] += a->n[2];