stubbing out keygen funcs

sshkeys/func.go

@@ -1,22 +1,47 @@
 package sshkeys
 
-func (k *EncryptedSSHKeyV1) GeneratePrivate(keyType uint8) error {
+import (
+	"errors"
+)
+
+func genPrivKey(cipherAlgo string, kdf string, salt []byte, rounds uint32) ([]byte, error) {
+
+	return nil, nil
+}
+
+func genPubKey(privKey *[]byte) ([]byte, error) {
+
+	return nil, nil
+}
+
+func (k *EncryptedSSHKeyV1) GeneratePrivate(force bool) error {
+	if k.Passphrase == "" {
+		return errors.New("cannot use encrypted key with empty passphrase")
+	}
+	if k.PrivateKeys != nil && !force {
+		return nil // Already generated.
+	}
+
 	return nil
 }
 
-func (k *EncryptedSSHKeyV1) GeneratePublic(keyType uint8) error {
-	if err := k.GeneratePrivate(keyType); err != nil {
+func (k *EncryptedSSHKeyV1) GeneratePublic(force bool) error {
+	if err := k.GeneratePrivate(force); err != nil {
 		return err
 	}
+
+	return nil
+}
+
+func (k *SSHKeyV1) GeneratePrivate(force bool) error {
+	if k.PrivateKeys != nil && !force {
+		return nil // Already generated.
+	}
 	return nil
 }
 
-func (k *SSHKeyV1) GeneratePrivate(keyType uint8) error {
-	return nil
-}
-
-func (k *SSHKeyV1) GeneratePublic(keyType uint8) error {
-	if err := k.GeneratePrivate(keyType); err != nil {
+func (k *SSHKeyV1) GeneratePublic(force bool) error {
+	if err := k.GeneratePrivate(force); err != nil {
 		return err
 	}
 	return nil