frost/secp256k1-zkp
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Add secp256k1_fe_add_int function

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This commit is contained in:
Pieter Wuille
2023-03-01 16:19:35 -05:00
parent 09b1d466db
commit b081f7e4cb
5 changed files with 43 additions and 3 deletions
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4
src/group_impl.h
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@@ -227,7 +227,7 @@ static int secp256k1_ge_set_xo_var(secp256k1_ge *r, const secp256k1_fe *x, int o
secp256k1_fe_sqr(&x2, x);
secp256k1_fe_mul(&x3, x, &x2);
r->infinity = 0;
secp256k1_fe_add(&x3, &secp256k1_fe_const_b);
secp256k1_fe_add_int(&x3, SECP256K1_B);
if (!secp256k1_fe_sqrt(&r->y, &x3)) {
return 0;
}
@@ -282,7 +282,7 @@ static int secp256k1_ge_is_valid_var(const secp256k1_ge *a) {
/* y^2 = x^3 + 7 */
secp256k1_fe_sqr(&y2, &a->y);
secp256k1_fe_sqr(&x3, &a->x); secp256k1_fe_mul(&x3, &x3, &a->x);
secp256k1_fe_add(&x3, &secp256k1_fe_const_b);
secp256k1_fe_add_int(&x3, SECP256K1_B);
secp256k1_fe_normalize_weak(&x3);
return secp256k1_fe_equal_var(&y2, &x3);
}