Computes kA*A + kB*B = C using Shamir's Trick
@param A First point to multiply
@param kA What to multiple A by
@param B Second point to multiply
@param kB What to multiple B by
@param C out Destination point (can overlap with A or B
@param modulus Modulus for curve
@return CRYPT_OK on success
Computes kA*A + kB*B = C using Shamir's Trick @param A First point to multiply @param kA What to multiple A by @param B Second point to multiply @param kB What to multiple B by @param C out Destination point (can overlap with A or B @param modulus Modulus for curve @return CRYPT_OK on success