Error when executing "bna"

[nozatabul]

I'm using python 2.6.5 on ubuntu 10.04

Executing the following bna -n && bna with an empty config file gives the following error:

Traceback (most recent call last):
  File "/usr/local/bin/bna", line 217, in <module>
    main()
  File "/usr/local/bin/bna", line 214, in main
    authenticator = Authenticator(sys.argv[1:])
  File "/usr/local/bin/bna", line 68, in __init__
    self._secret = unhexlify(self._secret)
TypeError: a2b_hex() argument 1 must be string or read-only buffer, not bytearray

Making the following change at line 65:

• self._secret = self.getSecret(serial)
• self._secret = self.getSecret(serial).decode("utf-8")

seems to fix the issue.

[jleclanche]

Im not seeing this with python2.7:

% python2.7 /home/adys/bin/bna -n && python2.7 /home/adys/bin/bna   
Success. Your new serial is: US-1207-2748-3777
22934181

The fix breaks on python3, so I added a check for python < 2.7 for it. Thank you.