if (group->meth->group_get_cofactor == 0) { ECerr(EC_F_EC_GROUP_GET_COFACTOR, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
if (!BN_copy(cofactor, &group->cofactor))
int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx)	{	if (group->meth->group_get_cofactor == 0)		{		ECerr(EC_F_EC_GROUP_GET_COFACTOR, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);		return 0;		}	return group->meth->group_get_cofactor(group, cofactor, ctx);	}