diff options
Diffstat (limited to 'crypto/ec/ec_mult.c')
| -rw-r--r-- | crypto/ec/ec_mult.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/crypto/ec/ec_mult.c b/crypto/ec/ec_mult.c index ddd3db5921..01574d8c93 100644 --- a/crypto/ec/ec_mult.c +++ b/crypto/ec/ec_mult.c @@ -187,10 +187,18 @@ int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, BIGNUM *scalar, if (i < num) { if (!EC_POINT_copy(val_sub[i][0], points[i])) goto err; + if (scalars[i]->neg) + { + if (!EC_POINT_invert(group, val_sub[i][0], ctx)) goto err; + } } else { if (!EC_POINT_copy(val_sub[i][0], generator)) goto err; + if (scalar->neg) + { + if (!EC_POINT_invert(group, val_sub[i][0], ctx)) goto err; + } } if (wsize[i] > 1) |