e30640e43d
git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@15 96b47cad-a561-4643-ad3b-153ac7d7599c
560 lines
22 KiB
Python
560 lines
22 KiB
Python
#
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# Copyright (C) 2009 Frank Morgner, Dominik Oepen
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#
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# This file is part of virtualsmartcard.
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#
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# virtualsmartcard is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option) any
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# later version.
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#
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# virtualsmartcard is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# virtualsmartcard. If not, see <http://www.gnu.org/licenses/>.
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#
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from ConstantDefinitions import *
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from TLVutils import *
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from SWutils import SwError, SW
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from SmartcardFilesystem import prettyprint_anything, MF, DF, CryptoflexMF, TransparentStructureEF
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from utils import C_APDU, R_APDU, hexdump, stringtoint, inttostring
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from SmartcardSAM import CardContainer, SAM, PassportSAM, CryptoflexSAM
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from pickle import dumps, loads
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import socket, struct, sys, signal, atexit, traceback
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class SmartcardOS(object): # {{{
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def __init__(self, filename,mf=None,ins2handler=None, maxle=MAX_SHORT_LE,sam=None):
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self.config_key = "DUMMYKEYDUMMYKEY" #TODO: Let user enter password
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self.filename = filename
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self.mf = mf
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self.SAM = sam
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if self.filename != None:
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try:
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self.load(filename,self.config_key)
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except ValueError:
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print "Failed to load configuration %s" % filename
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if self.SAM == None:
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print "Using default SAM. Insecure!!!"
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self.SAM = SAM("testconfig.sam",self.config_key) #FIXME: Replace by defaul_SAM()
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if self.mf == None:
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print "Using default MF."
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self.mf = MF(filedescriptor=FDB["DF"], lifecycle=LCB["ACTIVATED"], dfname=None)
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self.SAM.set_MF(self.mf)
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# pgp directory
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#self.mf.append(DF(parent=self.mf,
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#fid=4, dfname='\xd2\x76\x00\x01\x24\x01', bertlv_data=[]))
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# pkcs-15 directories
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#self.mf.append(DF(parent=self.mf,
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#fid=1, dfname='\xa0\x00\x00\x00\x01'))
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#self.mf.append(DF(parent=self.mf,
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#fid=2, dfname='\xa0\x00\x00\x03\x08\x00\x00\x10\x00'))
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#self.mf.append(DF(parent=self.mf,
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#fid=3, dfname='\xa0\x00\x00\x03\x08\x00\x00\x10\x00\x01\x00'))
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#import imp, os.path
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#SAM_config = os.path.join(os.path.dirname(imp.find_module("SmartcardSAM")[1]), "testconfig.sam") #Path to initial SAM configuration, stored on disk
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if not ins2handler:
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self.ins2handler = {
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0x0c: self.mf.eraseRecord,
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0x0e: self.mf.eraseBinaryPlain,
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0x0f: self.mf.eraseBinaryEncapsulated,
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0x2a: self.SAM.perform_security_operation,
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0x20: self.SAM.verify,
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0x22: self.SAM.manage_security_environment,
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0x24: self.SAM.change_reference_data,
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0x46: self.SAM.generate_public_key_pair,
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0x82: self.SAM.external_authenticate,
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0x84: self.SAM.get_challenge,
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0x88: self.SAM.internal_authenticate,
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0xa0: self.mf.searchBinaryPlain,
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0xa1: self.mf.searchBinaryEncapsulated,
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0xa4: self.mf.selectFile,
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0xb0: self.mf.readBinaryPlain,
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0xb1: self.mf.readBinaryEncapsulated,
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0xb2: self.mf.readRecordPlain,
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0xb3: self.mf.readRecordEncapsulated,
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0xc0: self.getResponse,
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0xca: self.mf.getDataPlain,
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0xcb: self.mf.getDataEncapsulated,
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0xd0: self.mf.writeBinaryPlain,
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0xd1: self.mf.writeBinaryEncapsulated,
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0xd2: self.mf.writeRecord,
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0xd6: self.mf.updateBinaryPlain,
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0xd7: self.mf.updateBinaryEncapsulated,
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0xda: self.mf.putDataPlain,
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0xdb: self.mf.putDataEncapsulated,
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0xdc: self.mf.updateRecordPlain,
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0xdd: self.mf.updateRecordEncapsulated,
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0xe0: self.mf.createFile,
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0xe2: self.mf.appendRecord,
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0xe4: self.mf.deleteFile,
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}
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else:
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self.ins2handler = ins2handler
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self.maxle = maxle
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self.lastCommandOffcut = ""
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self.lastCommandSW = SW["NORMAL"]
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card_capabilities = self.mf.firstSFT + self.mf.secondSFT + SmartcardOS.makeThirdSoftwareFunctionTable()
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self.atr = SmartcardOS.makeATR(T=1, directConvention = True, TA1=0x13,
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histChars = chr(0x80) + chr(0x70 + len(card_capabilities)) +
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card_capabilities)
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def save(self):
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"""
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Save the configuration of the current Smartcard (MF + SAM) to disk.
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To files will be stored: <filename>.mf for the mf and <filename>.sam
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for the SAM.
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Both files will be encrypted.
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"""
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if self.filename == None:
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raise ValueError, "No filename specified"
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else:
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mf = dumps(self.mf)
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path = self.filename + ".mf"
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mf = self.SAM.saveToDisk(mf,path)
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path = self.filename + ".sam"
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self.SAM.saveConfiguration(path)
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#self.SAM.saveConfiguration(path,"DUMMYKEYDUMMYKEY")
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def load(self,filename,password):
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"""
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Try to load a configuration from the filesystem. MF or SAM are only loaded if
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they aren't yet specified.
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"""
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if self.SAM == None:
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self.SAM = SAM("testconfig.sam","DUMMYKEYDUMMYKEY",None) #FIXME: replace by default_SAM()
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path = filename + ".sam"
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try:
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self.SAM.loadConfiguration(path,password)
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except IOError:
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print "Failed to open %s" % path
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if self.mf == None:
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path = filename + ".mf"
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data = self.SAM.loadFromDisk(path,password)
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self.mf = loads(data)
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print "Succesfully loaded MF from %s" % path
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def powerUp(self):
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pass
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def powerDown(self):
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pass
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@staticmethod
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def makeATR(**args): # {{{
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"""Calculate Answer to Reset (ATR) and returns the bitstring.
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directConvention -- Bool. Whether to use direct convention or inverse convention.
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TAi, TBi, TCi -- (optional) Value between 0 and 0xff. Interface Characters (for meaning see ISO 7816-3). Note that if no transmission protocol is given, it is automatically selected with T=max{j-1|TAj in args OR TBj in args OR TCj in args}.
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T -- (optional) Value between 0 and 15. Transmission Protocol. Note that if T is set, TAi/TBi/TCi for i>T are omitted.
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histChars -- (optional) Bitstring with 0 <= len(histChars) <= 15. Historical Characters T1 to T15 (for meaning see ISO 7816-4).
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T0, TDi and TCK are automatically calculated.
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"""
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# first byte TS
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if args["directConvention"]:
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atr = "\x3b"
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else:
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atr = "\x3f"
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if args.has_key("T"):
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T = args["T"]
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else:
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T = 0
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# find maximum i of TAi/TBi/TCi in args
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maxTD = 0
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i = 15
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while i > 0:
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if args.has_key("TA" + str(i)) or args.has_key("TB" + str(i)) or args.has_key("TC" + str(i)):
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maxTD = i-1
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break
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i -= 1
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if maxTD == 0 and T > 0:
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maxTD = 2
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# insert TDi into args (TD0 is actually T0)
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for i in range(0, maxTD+1):
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if i == 0 and args.has_key("histChars"):
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args["TD0"] = len(args["histChars"])
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else:
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args["TD"+str(i)] = T
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if i < maxTD:
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args["TD"+str(i)] |= 1<<7
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if args.has_key("TA" + str(i+1)):
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args["TD"+str(i)] |= 1<<4
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if args.has_key("TB" + str(i+1)):
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args["TD"+str(i)] |= 1<<5
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if args.has_key("TC" + str(i+1)):
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args["TD"+str(i)] |= 1<<6
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# initialize checksum
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TCK = 0
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# add TDi, TAi, TBi and TCi to ATR (TD0 is actually T0)
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for i in range(0, maxTD+1):
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atr = atr + "%c" % args["TD" + str(i)]
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TCK ^= args["TD" + str(i)]
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for j in ["A", "B", "C"]:
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if args.has_key("T" + j + str(i+1)):
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atr += "%c" % args["T" + j + str(i+1)]
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# calculate checksum for all bytes from T0 to the end
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TCK ^= args["T" + j + str(i+1)]
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# add historical characters
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if args.has_key("histChars"):
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atr += args["histChars"]
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for i in range(0, len(args["histChars"])):
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TCK ^= ord( args["histChars"][i] )
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# checksum is omitted for T=0
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if T > 0:
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atr += "%c" % TCK
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return atr
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# }}}
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@staticmethod
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def makeThirdSoftwareFunctionTable(commandChainging=False,
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extendedLe=False, assignLogicalChannel=0, maximumChannels=0): # {{{
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"""
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Returns a byte according to the third software function table from the
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historical bytes of the card capabilities.
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"""
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tsft = 0
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if commandChainging:
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tsft |= 1 << 7
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if extendedLe:
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tsft |= 1 << 6
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if assignLogicalChannel:
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if not (0<=assignLogicalChannel and assignLogicalChannel<=3):
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raise ValueError
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tsft |= assignLogicalChannel << 3
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if maximumChannels:
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if not (0<=maximumChannels and maximumChannels<=7):
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raise ValueError
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tsft |= maximumChannels
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return inttostring(tsft)
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# }}}
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def formatResult(self, le, data, sw, sm):
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if le == None:
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count = 0
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elif le == 0:
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count = self.maxle
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else:
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count = le
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self.lastCommandOffcut = data[count:]
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l = len(self.lastCommandOffcut)
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if l == 0:
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self.lastCommandSW = SW["NORMAL"]
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else:
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self.lastCommandSW = sw
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sw = SW["NORMAL_REST"] + min(0xff, l)
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result = data[:count]
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if sm:
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sw, result = self.SAM.protect_result(sw,result)
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return R_APDU(result, inttostring(sw)).render()
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def getResponse(self, p1, p2, data):
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if not (p1 == 0 and p2 == 0):
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raise SwError(SW["ERR_INCORRECTP1P2"])
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return self.lastCommandSW, self.lastCommandOffcut
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def execute(self, msg):
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def notImplemented(*argz, **args):
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raise SwError(SW["ERR_INSNOTSUPPORTED"])
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try:
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c = C_APDU(msg)
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except ValueError, e:
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print e
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return self.formatResult(0, 0, "", SW["ERR_INCORRECTPARAMETERS"])
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#Handle Class Byte{{{
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class_byte = c.cla
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SM_STATUS = None
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logical_channel = 0
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command_chaining = 0
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header_authentication = 0
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#Ugly Hack for OpenSC-explorer
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if(class_byte == 0xb0):
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print "Open SC APDU"
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SM_STATUS = "No SM"
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#If Bit 8,7,6 == 0 then first industry values are used
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if (class_byte & 0xE0 == 0x00):
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#Bit 1 and 2 specify the logical channel
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logical_channel = class_byte & 0x03
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#Bit 3 and 4 specify secure messaging
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secure_messaging = class_byte >> 2
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secure_messaging &= 0x03
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if (secure_messaging == 0x00):
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SM_STATUS = "No SM"
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elif (secure_messaging == 0x01):
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SM_STATUS = "Propietary SM" # Not supported ?
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elif (secure_messaging == 0x02):
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SM_STATUS = "Standard SM"
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elif (secure_messaging == 0x03):
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SM_STATUS = "Standard SM"
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header_authentication = 1
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#If Bit 8,7 == 01 then further industry values are used
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elif (class_byte & 0x0C == 0x0C):
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#Bit 1 to 4 specify logical channel. 4 is added, value range is from four to nineteen
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logical_channel = class_byte & 0x0f
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logical_channel += 4
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#Bit 6 indicates secure messaging
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secure_messaging = class_byte >> 5
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secure_messaging &= 0x01
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if (secure_messaging == 0x00):
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SM_STATUS = "No SM"
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elif (secure_messaging == 0x01):
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SM_STATUS = "Standard SM"
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#In both cases Bit 5 specifiys command chaining
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command_chaining = class_byte >> 5
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command_chaining &= 0x01
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#}}}
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try:
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if SM_STATUS == "Standard SM":
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c = self.SAM.parse_SM_CAPDU(c,header_authentication)
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elif SM_STATUS == "Propietary SM":
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raise SwError("ERR_SECMESSNOTSUPPORTED")
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sw, result = self.ins2handler.get(c.ins, notImplemented)(c.p1, c.p2, c.data)
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if SM_STATUS == "Standard SM":
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answer = self.formatResult(c.le, result, sw, True)
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else:
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answer = self.formatResult(c.le, result, sw, False)
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except SwError, e:
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print e.message
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#traceback.print_exception(*sys.exc_info())
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sw = e.sw
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result = ""
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answer = self.formatResult(c.le, result, sw, False)
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return answer
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# }}}
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class PassportOS(SmartcardOS):
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"""
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The PassportOS emulates a Passport Application according to ICAO MRTD standard.
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It generates a data structure ...
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It also integrates a SAM derived from the standard SmartcardSAM, providing the
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Basic Access Control (BAC) mechanisms.
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"""
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def __init__(self, filename,mf=None, ins2handler=None, maxle=MAX_SHORT_LE):
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if filename == None and mf == None:
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mf = MF()
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else:
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pass #TODO: Load data from disk
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self.generate_data_structure(mf)
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self.SAM = PassportSAM(mf)
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SmartcardOS.__init__(self, None, mf=mf, ins2handler=ins2handler, maxle=maxle,sam=self.SAM)
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def generate_data_structure(self,mf):
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#MRZ1 = "P<UTOERIKSSON<<ANNA<MARIX<<<<<<<<<<<<<<<<<<<"
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#MRZ2 = "L898902C<3UTO6908061F9406236ZE184226B<<<<<14"
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MRZ1 = "IDD<<OEPEN<<DOMINIK<<<<<<<<<<<<<<<<<"
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MRZ2 = "6863089495D<<8312251<0908195<<<<<<<0"
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MRZ = MRZ1+MRZ2
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from PIL import Image
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picturepath = "jp2.jpg"
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try:
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im = Image.open(picturepath)
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pic_width, pic_height = im.size
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fd = open(picturepath,"rb")
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picture = fd.read()
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fd.close()
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except IOError:
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print "Could not find picture %s" % picturepath
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pic_width = 0
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pic_height = 0
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picture = None
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#We need a MF with Application DF \xa0\x00\x00\x02G\x10\x01
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mf.append(DF(parent=mf,fid=4, dfname='\xa0\x00\x00\x02G\x10\x01', bertlv_data=[]))
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df = mf.currentDF()
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mf.append(TransparentStructureEF(parent=df, fid=0x011E, filedescriptor=0, data=""))#EF.COM
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mf.append(TransparentStructureEF(parent=df, fid=0x0101, filedescriptor=0, data=""))#EF.DG1
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mf.append(TransparentStructureEF(parent=df, fid=0x0102, filedescriptor=0, data=""))#EF.DG2
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mf.append(TransparentStructureEF(parent=df, fid=0x010D, filedescriptor=0, data=""))#EF.SOD
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#EF.COM
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COM = pack([(0x5F01,4,"0107"),(0x5F36,6,"040000"),(0x5C,2,"6175")])
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COM = pack(((0x60,len(COM),COM),))
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fid = df.select("fid",0x011E)
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fid.writebinary([0],[COM])
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#EF.DG1
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DG1 = pack([(0x5F1F,len(MRZ),MRZ)])
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DG1 = pack([(0x61,len(DG1),DG1)])
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fid = df.select("fid",0x0101)
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fid.writebinary([0],[DG1])
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#EF.DG2
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if picture != None:
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IIB = "\x00\x01" + inttostring(pic_width,2) + inttostring(pic_height,2) + 6 * "\x00"
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length = 32 + len(picture) #32 is the length of IIB + FIB
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FIB = inttostring(length,4) + 16 * "\x00"
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FRH = "FAC" + "\x00" + "010" + "\x00" + inttostring(14+length,4) + inttostring(1,2)
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picture = FRH + FIB + IIB + picture
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DG2 = pack([(0xA1,8,"\x87\x02\x01\x01\x88\x02\x05\x01"),(0x5F2E,len(picture),picture)])
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DG2 = pack([(0x02,1,"\x01"),(0x7F60,len(DG2),DG2)])
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DG2 = pack([(0x7F61,len(DG2),DG2)])
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fid = df.select("fid",0x0102)
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fid.writebinary([0],[DG2])
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class CryptoflexOS(SmartcardOS): # {{{
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def __init__(self, filename, mf=None, ins2handler=None, maxle=MAX_SHORT_LE):
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if filename == None and mf == None:
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mf = CryptoflexMF()
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mf.append(TransparentStructureEF(parent=mf, fid=0x0002, filedescriptor=0x01,
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data="\x00\x00\x00\x01\x00\x01\x00\x00"))#EF.ICCSN
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#TODO: Load objects from disk
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SmartcardOS.__init__(self, None,mf=mf, ins2handler=ins2handler, maxle=maxle,
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sam=CryptoflexSAM("testconfig.sam","DUMMYKEYDUMMYKEY"))
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self.atr = '\x3B\xE2\x00\x00\x40\x20\x49\x06'
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def execute(self, msg):
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def notImplemented(*argz, **args):
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raise SwError(SW["ERR_INSNOTSUPPORTED"])
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try:
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c = C_APDU(msg)
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except ValueError, e:
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|
print e
|
|
return self.formatResult(0, 0, "", SW["ERR_INCORRECTPARAMETERS"])
|
|
|
|
try:
|
|
sw, result = self.ins2handler.get(c.ins, notImplemented)(c.p1, c.p2, c.data)
|
|
#print type(result)
|
|
except SwError, e:
|
|
print e.message
|
|
#traceback.print_exception(*sys.exc_info())
|
|
sw = e.sw
|
|
result = ""
|
|
|
|
r = self.formatResult(c.ins, c.le, result, sw)
|
|
return r
|
|
|
|
def formatResult(self, ins, le, data, sw):
|
|
if le == 0 and len(data):
|
|
# cryptoflex does not inpterpret le==0 as maxle
|
|
self.lastCommandSW = sw
|
|
self.lastCommandOffcut = data
|
|
r = R_APDU(inttostring(SW["ERR_WRONGLENGTH"] + min(0xff,len(data)))).render()
|
|
else:
|
|
if ins == 0xa4 and len(data):
|
|
# get response should be followed by select file
|
|
self.lastCommandSW = sw
|
|
self.lastCommandOffcut = data
|
|
r = R_APDU(inttostring(SW["NORMAL_REST"] + min(0xff, len(data)))).render()
|
|
else:
|
|
r = SmartcardOS.formatResult(self, le, data, sw, False)
|
|
|
|
return r
|
|
# }}}
|
|
|
|
|
|
class VirtualICC(object): # {{{
|
|
|
|
def __init__(self, filename,os=None, lenlen=3, host="localhost", port=35963):
|
|
if os == None:
|
|
self.os = SmartcardOS(filename)
|
|
else:
|
|
self.os = os
|
|
self.filename = filename
|
|
self.sock = self.connectToPort(host, port)
|
|
self.sock.settimeout(None)
|
|
self.lenlen = lenlen
|
|
signal.signal(signal.SIGINT, self.signalHandler)
|
|
atexit.register(self.signalHandler)
|
|
atexit.register(self.saveCard)
|
|
|
|
def saveCard(self):
|
|
if self.filename != None:
|
|
print "Saving smartcard configuration to %s" % self.filename
|
|
self.os.save()
|
|
else:
|
|
print "No filename specified, card configuration will not be saved."
|
|
|
|
def signalHandler(self, signal=None, frame=None):
|
|
self.sock.close()
|
|
sys.exit()
|
|
|
|
@staticmethod
|
|
def connectToPort(host, port):
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
sock.connect((host, port))
|
|
return sock
|
|
|
|
def __sendToVPICC(self, msg):
|
|
size = inttostring(len(msg), self.lenlen)
|
|
self.sock.sendall("%s%s" % (size, msg))
|
|
|
|
def __recvFromVPICC(self):
|
|
# receive message size
|
|
size = self.sock.recv(self.lenlen)
|
|
size = stringtoint(size)
|
|
|
|
# receive and return message
|
|
if size == 0:
|
|
return ""
|
|
else:
|
|
msg = self.sock.recv(size)
|
|
return msg
|
|
|
|
def run(self):
|
|
while True :
|
|
msg = self.__recvFromVPICC()
|
|
if msg == "":
|
|
self.__sendToVPICC(self.os.atr)
|
|
elif msg == chr(0):
|
|
# powerdown
|
|
print "Power Down"
|
|
self.os.powerDown()
|
|
elif msg == chr(1):
|
|
# powerup
|
|
print "Power Up"
|
|
self.os.powerUp()
|
|
else:
|
|
print "APDU (%d Bytes):\n%s" % (len(msg),hexdump(msg, short=True))
|
|
answer = self.os.execute(msg)
|
|
print "RESP (%d Bytes):\n%s\n" % (len(answer),hexdump(answer, short=True))
|
|
self.__sendToVPICC(answer)
|
|
# }}}
|
|
|
|
if __name__ == "__main__":
|
|
from optparse import OptionParser
|
|
parser = OptionParser()
|
|
parser.add_option("-t", "--type", action="store", type="choice",
|
|
default='iso7816',
|
|
choices=['iso7816', 'cryptoflex', 'ePass'],
|
|
help="Type of Smartcard [default: %default]")
|
|
parser.add_option("-f", "--file", action="store", type="string",
|
|
dest="filename", default=None,
|
|
help="Name of a smartcard stored in the filesystem. The card will be loaded")
|
|
(options, args) = parser.parse_args()
|
|
if options.type == 'cryptoflex':
|
|
vicc = VirtualICC(options.filename,os=CryptoflexOS(options.filename))
|
|
elif options.type == 'ePass':
|
|
#raise ValueError, "Not implemented yet!"
|
|
vicc = VirtualICC(options.filename,os=PassportOS(options.filename))
|
|
else:
|
|
vicc = VirtualICC(options.filename)
|
|
vicc.run()
|