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# Copyright (c) 2010-2012 Liraz Siri <>
# This file is part of TKLBAM (TurnKey GNU/Linux BAckup and Migration).
# TKLBAM is open source software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3 of
# the License, or (at your option) any later version.
import os
import sys
import base64
import getpass
def random_passphrase():
random = base64.b32encode(os.urandom(10))
parts = []
for i in range(4):
parts.append(random[i * 4:(i+1) * 4])
return "-".join(parts)
class Error(Exception):
def get_passphrase(confirm=True):
if not os.isatty(sys.stdin.fileno()):
input = sys.stdin.readline()
if not input:
raise Error("can't get passphrase - broken input")
return input.rstrip()
while True:
passphrase = getpass.getpass("Passphrase: ")
if not confirm:
return passphrase
confirm_passphrase = getpass.getpass("Confirm passphrase: ")
if passphrase == confirm_passphrase:
print >> sys.stderr, "Sorry, passphrases do not match"
return passphrase