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Hakase
2020-04-15 18:45:34 +09:00
parent be29e7bcc6
commit 2015c00c43
573 changed files with 22943 additions and 6714 deletions
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crypto/ec/ec_mult.c
+18 -11
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@@ -266,17 +266,10 @@ int ec_scalar_mul_ladder(const EC_GROUP *group, EC_POINT *r,
goto err;
}
/*-
* Apply coordinate blinding for EC_POINT.
*
* The underlying EC_METHOD can optionally implement this function:
* ec_point_blind_coordinates() returns 0 in case of errors or 1 on
* success or if coordinate blinding is not implemented for this
* group.
*/
if (!ec_point_blind_coordinates(group, p, ctx)) {
ECerr(EC_F_EC_SCALAR_MUL_LADDER, EC_R_POINT_COORDINATES_BLIND_FAILURE);
goto err;
/* ensure input point is in affine coords for ladder step efficiency */
if (!p->Z_is_one && !EC_POINT_make_affine(group, p, ctx)) {
ECerr(EC_F_EC_SCALAR_MUL_LADDER, ERR_R_EC_LIB);
goto err;
}
/* Initialize the Montgomery ladder */
@@ -753,6 +746,20 @@ int ec_wNAF_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
if (r_is_at_infinity) {
if (!EC_POINT_copy(r, val_sub[i][digit >> 1]))
goto err;
/*-
* Apply coordinate blinding for EC_POINT.
*
* The underlying EC_METHOD can optionally implement this function:
* ec_point_blind_coordinates() returns 0 in case of errors or 1 on
* success or if coordinate blinding is not implemented for this
* group.
*/
if (!ec_point_blind_coordinates(group, r, ctx)) {
ECerr(EC_F_EC_WNAF_MUL, EC_R_POINT_COORDINATES_BLIND_FAILURE);
goto err;
}
r_is_at_infinity = 0;
} else {
if (!EC_POINT_add