Fixed issue with password encoding when generating SSH keypair

Author: rvelaVenafi

vcert/ssh_utils.py

@@ -175,7 +175,7 @@ def generate(self, key_size=DEFAULT_SSH_KEY_SIZE, passphrase=None):
         :return:
         """
         if passphrase:
-            encryption = serialization.BestAvailableEncryption(passphrase)
+            encryption = serialization.BestAvailableEncryption(passphrase.encode())
         else:
             encryption = serialization.NoEncryption()