March Madness Challenge - Day 5

For tonight's March madness I will be demonstrating a variation on the theme of storing your private key locally. This program will up the ante and store your username and password as a QRCode. This way only a few machines can compromise your accounts when you take a picture of your username/password for decryption. Inspired by the following super high security tech technology: SafeBerg Technology

A bit of preparation is required. I'm using the python library huBarcode. You will need to run some flavor of "git clone git://github.com/hudora/huBarcode.git" followed by python setup.py install. Last option: sudo easy_install huBarcode

This code would have worked brilliantly if not for this error:
IOError: [Errno 2] No such file or directory: '/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/huBarcode-0.56p5-py2.4.egg/qrcode/qrcode_data/qrv1_0.dat'

And here is the code:

#
# Turn a username/password into a QRCode 
#
#
import getopt
import sys
import getpass
import qrcode

#Describe usage
def usage():
 print "-h, --help\n -v, --verbose\n -u, --username\n -p, --password\n -f, --filename\n"

def main():
 try:
  opts, args = getopt.getopt(sys.argv[1:], "h:u:pvf:", ["help", "username=", "password", "filename"])
 except getopt.GetoptError, err:
  #print help information and exit:
  print str(err) # will print something like "option -a not recognized"
  usage()
  sys.exit(2)
 username = None
 password = None
 verbose = False
 filename = "default.png"

 for o, a in opts:
  if o == "-v":
   verbose = True
  elif o in ("-h", "--help"):
   usage()
   sys.exit()
  elif o in ("-u", "--username"):
   username = a
   if verbose:
    print "username: " + username 
                elif o in ("-p", "--password"):
   password = getpass.getpass("Enter password: ") 
   if verbose:
    print "password: " + password 
  elif o in ("-f", "--filename"):
          filename  = a;
   if verbose:
    print "filename: " + filename 
  else:
   assert False, "unhandled option"
 if username is None:
  print "-u, --username  was not given"
  usage() 
  sys.exit(2)
 if password is None:
  print "-p, --password  was not given"
  usage()
  sys.exit(2)


 encoder = qrcode.QRCodeEncoder( username + "\n" + password)
 print encoder.get_ascii()
 encoder.save(filename, 3)

if __name__ == "__main__":
 main()