C._goboringcrypto_RSA_get0_key(key, &n, &e, &d)
	C._goboringcrypto_RSA_get0_factors(key, &p, &q)
	C._goboringcrypto_RSA_get0_crt_params(key, &dp, &dq, &qinv)
	return bnToBig(n), bnToBig(e), bnToBig(d), bnToBig(p), bnToBig(q), bnToBig(dp), bnToBig(dq), bnToBig(qinv), nil
}

type PublicKeyRSA struct {
	// _key MUST NOT be accessed directly. Instead, use the withKey method.
	_key *C.GO_RSA
}