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#!/usr/bin/env python2
#
# Utility to run an A3/A8 algorithm on a SIM card
#
# Copyright (C) 2018 Alexander Chemeris <alexander.chemeris@gmail.com>
#
# This program is free 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 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import sys
from optparse import OptionParser
from pySim.commands import SimCardCommands
def parse_options():
parser = OptionParser(usage="usage: %prog [options]",
description="Utility to run an A3/A8 algorithm on a SIM card. "
"Prints generated SRES and Kc for a given RAND number "
"and exits.")
parser.add_option("-d", "--device", dest="device", metavar="DEV",
help="Serial Device for SIM access [default: %default]",
default="/dev/ttyUSB0",
)
parser.add_option("-b", "--baud", dest="baudrate", type="int", metavar="BAUD",
help="Baudrate used for SIM access [default: %default]",
default=9600,
)
parser.add_option("-p", "--pcsc-device", dest="pcsc_dev", type='int', metavar="PCSC",
help="Which PC/SC reader number for SIM access",
default=None,
)
parser.add_option("-r", "--rand", dest="rand", metavar="RAND",
help="16 bytes of RAND value",
default=None,
)
(options, args) = parser.parse_args()
if args:
parser.error("Extraneous arguments")
return options
if __name__ == '__main__':
# Parse options
opts = parse_options()
if opts.rand is None:
print("Please specify RAND value")
sys.exit(1)
if len(opts.rand) != 32:
print("RAND must be 16 bytes long")
sys.exit(1)
# Connect to the card
if opts.pcsc_dev is None:
from pySim.transport.serial import SerialSimLink
sl = SerialSimLink(device=opts.device, baudrate=opts.baudrate)
else:
from pySim.transport.pcsc import PcscSimLink
sl = PcscSimLink(opts.pcsc_dev)
# Create command layer
scc = SimCardCommands(transport=sl)
# Wait for SIM card
sl.wait_for_card()
# Program the card
print("Running GSM algorithm with RAND %s" % (opts.rand,))
# Run GSM A3/A8
(res, sw) = scc.run_gsm(opts.rand)
if sw == '9000':
sres, kc = res
print("SRES = %s" % (sres,))
print("Kc = %s" % (kc,))
else:
print("Error %s, result data '%s'" % (sw, res))
# Done for this card and maybe for everything ?
print "Done !\n"
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