privateKeyPath := pathForKey(pkiPath, name)

	// Parse the private key from a file
	privKey, err := keyutil.PrivateKeyFromFile(privateKeyPath)
	if err != nil {
		return nil, errors.Wrapf(err, "couldn't load the private key file %s", privateKeyPath)
	}

	// Allow RSA and ECDSA formats only
	var key crypto.Signer
	switch k := privKey.(type) {
	case *rsa.PrivateKey:
		key = k
	case *ecdsa.PrivateKey:
		key = k

	if err != nil {
		return "", "", err
	}
	pubkey := append([]byte{algEd25519}, pub...)
	privkey := append([]byte{algEd25519}, priv.Seed()...)
	h := keyHash(name, pubkey)

	skey = fmt.Sprintf("PRIVATE+KEY+%s+%08x+%s", name, h, base64.StdEncoding.EncodeToString(privkey))
	vkey = fmt.Sprintf("%s+%08x+%s", name, h, base64.StdEncoding.EncodeToString(pubkey))
	return skey, vkey, nil
}

		GenerateMultiPrimeKey(rand.Reader, 4, i)
		GenerateMultiPrimeKey(rand.Reader, 5, i)
	}
}

func TestGnuTLSKey(t *testing.T) {
	// This is a key generated by `certtool --generate-privkey --bits 128`.
	// It's such that de ≢ 1 mod φ(n), but is congruent mod the order of
	// the group.
	priv := parseKey(testingKey(`-----BEGIN RSA TESTING KEY-----
MGECAQACEQDar8EuoZuSosYtE9SeXSyPAgMBAAECEBf7XDET8e6jjTcfO7y/sykC