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Abstract out verify logic for fe_cmov

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This commit is contained in:
Pieter Wuille
2022-01-28 18:45:42 -05:00
parent be82bd8e03
commit 1e6894bdd7
4 changed files with 22 additions and 15 deletions
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8
src/field_10x26_impl.h
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@@ -1035,7 +1035,7 @@ SECP256K1_INLINE static void secp256k1_fe_impl_sqr(secp256k1_fe *r, const secp25
secp256k1_fe_sqr_inner(r->n, a->n);
}
static SECP256K1_INLINE void secp256k1_fe_cmov(secp256k1_fe *r, const secp256k1_fe *a, int flag) {
SECP256K1_INLINE static void secp256k1_fe_impl_cmov(secp256k1_fe *r, const secp256k1_fe *a, int flag) {
uint32_t mask0, mask1;
volatile int vflag = flag;
SECP256K1_CHECKMEM_CHECK_VERIFY(r->n, sizeof(r->n));
@@ -1051,12 +1051,6 @@ static SECP256K1_INLINE void secp256k1_fe_cmov(secp256k1_fe *r, const secp256k1_
r->n[7] = (r->n[7] & mask0) | (a->n[7] & mask1);
r->n[8] = (r->n[8] & mask0) | (a->n[8] & mask1);
r->n[9] = (r->n[9] & mask0) | (a->n[9] & mask1);
#ifdef VERIFY
if (flag) {
r->magnitude = a->magnitude;
r->normalized = a->normalized;
}
#endif
}
static SECP256K1_INLINE void secp256k1_fe_half(secp256k1_fe *r) {