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Delete gej_is_valid_var: unused outside tests

This commit is contained in:
Pieter Wuille 2020-09-06 17:25:02 -07:00
parent 8bcd78cd79
commit d7f39ae4b6
2 changed files with 0 additions and 22 deletions
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20
src/group_impl.h
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@ -269,26 +269,6 @@ static int secp256k1_gej_is_infinity(const secp256k1_gej *a) {
return a->infinity; return a->infinity;
} }
static int secp256k1_gej_is_valid_var(const secp256k1_gej *a) {
secp256k1_fe y2, x3, z2, z6;
if (a->infinity) {
return 0;
}
/** y^2 = x^3 + 7
* (Y/Z^3)^2 = (X/Z^2)^3 + 7
* Y^2 / Z^6 = X^3 / Z^6 + 7
* Y^2 = X^3 + 7*Z^6
*/
secp256k1_fe_sqr(&y2, &a->y);
secp256k1_fe_sqr(&x3, &a->x); secp256k1_fe_mul(&x3, &x3, &a->x);
secp256k1_fe_sqr(&z2, &a->z);
secp256k1_fe_sqr(&z6, &z2); secp256k1_fe_mul(&z6, &z6, &z2);
secp256k1_fe_mul_int(&z6, CURVE_B);
secp256k1_fe_add(&x3, &z6);
secp256k1_fe_normalize_weak(&x3);
return secp256k1_fe_equal_var(&y2, &x3);
}
static int secp256k1_ge_is_valid_var(const secp256k1_ge *a) { static int secp256k1_ge_is_valid_var(const secp256k1_ge *a) {
secp256k1_fe y2, x3, c; secp256k1_fe y2, x3, c;
if (a->infinity) { if (a->infinity) {

2
src/tests.c
View File

@ -2615,7 +2615,6 @@ void test_point_times_order(const secp256k1_gej *point) {
secp256k1_ecmult(&ctx->ecmult_ctx, &res2, point, &nx, &nx); /* calc res2 = (order - x) * point + (order - x) * G; */ secp256k1_ecmult(&ctx->ecmult_ctx, &res2, point, &nx, &nx); /* calc res2 = (order - x) * point + (order - x) * G; */
secp256k1_gej_add_var(&res1, &res1, &res2, NULL); secp256k1_gej_add_var(&res1, &res1, &res2, NULL);
CHECK(secp256k1_gej_is_infinity(&res1)); CHECK(secp256k1_gej_is_infinity(&res1));
CHECK(secp256k1_gej_is_valid_var(&res1) == 0);
secp256k1_ge_set_gej(&res3, &res1); secp256k1_ge_set_gej(&res3, &res1);
CHECK(secp256k1_ge_is_infinity(&res3)); CHECK(secp256k1_ge_is_infinity(&res3));
CHECK(secp256k1_ge_is_valid_var(&res3) == 0); CHECK(secp256k1_ge_is_valid_var(&res3) == 0);
@ -2647,7 +2646,6 @@ void run_point_times_order(void) {
secp256k1_gej j; secp256k1_gej j;
CHECK(secp256k1_ge_is_valid_var(&p)); CHECK(secp256k1_ge_is_valid_var(&p));
secp256k1_gej_set_ge(&j, &p); secp256k1_gej_set_ge(&j, &p);
CHECK(secp256k1_gej_is_valid_var(&j));
test_point_times_order(&j); test_point_times_order(&j);
} }
secp256k1_fe_sqr(&x, &x); secp256k1_fe_sqr(&x, &x);