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Add group.h ge/gej equality functions

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This commit is contained in:
Pieter Wuille
2023-12-01 10:25:57 -05:00
parent 10e6d29b60
commit a47cd97d51
3 changed files with 38 additions and 20 deletions
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29
src/group_impl.h
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@@ -354,6 +354,35 @@ static int secp256k1_gej_eq_var(const secp256k1_gej *a, const secp256k1_gej *b)
return secp256k1_gej_is_infinity(&tmp);
}
static int secp256k1_gej_eq_ge_var(const secp256k1_gej *a, const secp256k1_ge *b) {
secp256k1_gej tmp;
SECP256K1_GEJ_VERIFY(a);
SECP256K1_GE_VERIFY(b);
secp256k1_gej_neg(&tmp, a);
secp256k1_gej_add_ge_var(&tmp, &tmp, b, NULL);
return secp256k1_gej_is_infinity(&tmp);
}
static int secp256k1_ge_eq_var(const secp256k1_ge *a, const secp256k1_ge *b) {
secp256k1_fe tmp;
SECP256K1_GE_VERIFY(a);
SECP256K1_GE_VERIFY(b);
if (a->infinity != b->infinity) return 0;
if (a->infinity) return 1;
tmp = a->x;
secp256k1_fe_normalize_weak(&tmp);
if (!secp256k1_fe_equal(&tmp, &b->x)) return 0;
tmp = a->y;
secp256k1_fe_normalize_weak(&tmp);
if (!secp256k1_fe_equal(&tmp, &b->y)) return 0;
return 1;
}
static int secp256k1_gej_eq_x_var(const secp256k1_fe *x, const secp256k1_gej *a) {
secp256k1_fe r;
SECP256K1_FE_VERIFY(x);