mirror of https://gerrit.osmocom.org/pysim
pySim-shell: Authenticate (3g) support
This adds support for AUTHENTICATE to the USIM and ISIM application, based on the newly-introduced 'construct' encoder/decoder support. Change-Id: Id5697463e29c3dceff98bcf80f5400f7f2bcaa6c
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@ -300,6 +300,17 @@ to the SIM card.
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This allows for easy interactive modification of file contents.
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USIM commands
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-------------
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authenticate
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~~~~~~~~~~~~
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.. argparse::
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:module: pySim.ts_31_102
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:func: ADF_USIM.AddlShellCommands.authenticate_parser
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cmd2 settable parameters
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------------------------
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@ -21,6 +21,8 @@
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from construct import *
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from pySim.construct import LV
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from pySim.utils import rpad, b2h, sw_match
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from pySim.exceptions import SwMatchError
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@ -274,6 +276,26 @@ class SimCardCommands(object):
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self.select_path(['3f00', '7f20'])
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return self._tp.send_apdu(self.cla_byte + '88000010' + rand)
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def authenticate(self, rand:str, autn:str, context='3g'):
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"""Execute AUTHENTICATE (USIM/ISIM)."""
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# 3GPP TS 31.102 Section 7.1.2.1
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AuthCmd3G = Struct('rand'/LV, 'autn'/Optional(LV))
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AuthResp3GSyncFail = Struct(Const(b'\xDC'), 'auts'/LV)
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AuthResp3GSuccess = Struct(Const(b'\xDB'), 'res'/LV, 'ck'/LV, 'ik'/LV, 'kc'/Optional(LV))
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AuthResp3G = Select(AuthResp3GSyncFail, AuthResp3GSuccess)
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# build parameters
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cmd_data = {'rand': rand, 'autn': autn}
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if context == '3g':
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p2 = '81'
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elif context == 'gsm':
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p2 = '80'
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(data, sw) = self._tp.send_apdu_constr(self.cla_byte, '88', '00', p2, AuthCmd3G, cmd_data, AuthResp3G)
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if 'auts' in data:
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ret = {'synchronisation_failure': data}
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else:
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ret = {'successful_3g_authentication': data}
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return (ret, sw)
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def reset_card(self):
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"""Physically reset the card"""
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return self._tp.reset_card()
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@ -268,6 +268,7 @@ EF_USIM_ADF_map = {
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# ADF.USIM
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######################################################################
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from struct import unpack, pack
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from pySim.filesystem import *
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from pySim.ts_51_011 import EF_IMSI, EF_xPLMNwAcT, EF_SPN, EF_CBMI, EF_ACC, EF_PLMNsel, EF_AD
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from pySim.ts_51_011 import EF_CBMID, EF_CBMIR
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@ -489,6 +490,8 @@ class ADF_USIM(CardADF):
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def __init__(self, aid='a0000000871002', name='ADF.USIM', fid=None, sfid=None,
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desc='USIM Application'):
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super().__init__(aid=aid, fid=fid, sfid=sfid, name=name, desc=desc)
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# add those commands to the general commands of a TransparentEF
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self.shell_commands += [self.AddlShellCommands()]
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files = [
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EF_LI(sfid=0x02),
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@ -520,6 +523,23 @@ class ADF_USIM(CardADF):
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def decode_select_response(self, data_hex):
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return pySim.ts_102_221.decode_select_response(data_hex)
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@with_default_category('Application-Specific Commands')
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class AddlShellCommands(CommandSet):
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def __init__(self):
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super().__init__()
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authenticate_parser = argparse.ArgumentParser()
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authenticate_parser.add_argument('rand', help='Random challenge')
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authenticate_parser.add_argument('autn', help='Authentication Nonce')
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#authenticate_parser.add_argument('--context', help='Authentication context', default='3G')
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@cmd2.with_argparser(authenticate_parser)
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def do_authenticate(self, opts):
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"""Perform Authentication and Key Agreement (AKA)."""
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(data, sw) = self._cmd.card._scc.authenticate(opts.rand, opts.autn)
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self._cmd.poutput_json(data)
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# TS 31.102 Section 7.3
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sw_usim = {
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'Security management': {
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@ -25,6 +25,7 @@ Various constants from ETSI TS 131 103 V14.2.0
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from pySim.filesystem import *
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from pySim.utils import *
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from pySim.ts_51_011 import EF_AD
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from pySim.ts_31_102 import ADF_USIM
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import pySim.ts_102_221
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# Mapping between ISIM Service Number and its description
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@ -186,6 +187,8 @@ class ADF_ISIM(CardADF):
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EF_WebRTCURI(),
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]
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self.add_files(files)
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# add those commands to the general commands of a TransparentEF
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self.shell_commands += [ADF_USIM.AddlShellCommands()]
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def decode_select_response(self, data_hex):
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return pySim.ts_102_221.decode_select_response(data_hex)
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