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#!/usr/bin/perl
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# ATR_analysis
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# Copyright (C) 2000, 2002 Ludovic Rousseau, Christophe Levantis
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# $Id: ATR_analysis,v 1.9 2003-10-22 16:51:13 rousseau Exp $
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# For more information about the ATR see ISO 7816-3 1997, pages 12 and up
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#
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# TS initial character
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# T0 format character, Y1 | K
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# interfaces characters
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# TA(1) global, codes FI and DI
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# TB(1) global, codes II and PI
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# TC(1) global, codes N
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# TD(1) codes Y(2) and T
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# TA(2) global, codes specific mode
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# TB(2) global, codes PI2
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# TC(2) specific
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# TD(2) codes Y(3) and T
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# TA(3) TA(i), TB(i), TC(i) (i>2)
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# - specific after T!=15
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# - global after T=15
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# TD(i) codes Y(i+1) and T
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# T1 historical bytes
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# max 15 characters
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# TK
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# TCK check character
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use strict;
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use warnings;
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use Getopt::Std;
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# file containing the smart card models
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my $SMARTCARD_LIST = "smartcard_list.txt";
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# where to look for $SMARTCARD_LIST
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my @LIST_PATH = qw(. /usr/local/pcsc /usr/lib/pcsc);
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our ($opt_v, $opt_h);
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my ($atr, %TS, @Fi, @Di, @XI, @UI, $T, $value, $counter, $line);
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my ($Y1, $K, @object, $nb_bytes, $mpcard);
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# tables
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%TS = (0x3B, "Direct Convention", 0x3F, "Inverse Convention");
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@Fi = (372, 372, 558, 744, 1116, 1488, 1860, "RFU", "RFU", 512, 768, 1024,
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1536, 2048, "RFU", "RFU");
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@Di = ("RFU", 1, 2, 4, 8, 16, 32, "RFU", 12, 20, "RFU", "RFU", "RFU",
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"RFU", "RFU", "RFU");
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@XI = ("not supported", "state L", "state H", "no preference");
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@UI = ("A only (5V)", "B only (3V)", "A and B", "RFU");
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# prorotypes
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sub analyse_TA();
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sub analyse_TB();
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sub analyse_TC();
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sub analyse_TD();
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sub find_card($$@);
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# globals init
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$T = 0;
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$value = 0;
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$counter = 1;
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getopts("vh");
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if ($opt_v)
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{
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print "Version: 1.2, (c) 2002, Ludovic Rousseau <ludovic.rousseau\@free.fr>\n";
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exit;
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}
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# 1_ 1 argument then input = ATR else smart card
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if (($#ARGV != 0) or $opt_h)
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{
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print "Usage: $0 ATR_string\n";
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print " Ex: $0 '3B A7 00 40 18 80 65 A2 08 01 01 52'\n";
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exit;
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}
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# 1_ get the ATR
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$atr = $ARGV[0];
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if (substr ($atr, 2, 1) ne " ")
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{
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# "3BA7004018" -> "3B A7 00 40 18"
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$atr =~ s/(..)/$1 /g;
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$atr =~ s/ *$//;
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}
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print "ATR: $atr\n";
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# 2_ Split in bytes of the lines
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@object = split(/\s/, $atr);
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$nb_bytes=$#object+1;
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#print $nb_bytes;
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# 3_ Analysis
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# Analysis of TS:
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$value=hex(shift(@object));
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if (defined $TS{$value})
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{
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printf "+ TS = %02X --> %s\n", $value, $TS{$value};
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$mpcard = 1;
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}
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else
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{
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printf "+ TS = %02X --> UNDEFINED\n", $value;
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# this is NOT a microprocessor card
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$mpcard = 0;
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}
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exit if ($#object < 0);
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# Analysis of T0:
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$value = hex(shift(@object));
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$Y1 = $value >> 4;
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$K = $value % 16;
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printf "+ T0 = %02X, Y(1): %04b, K: %d (historical bytes)\n", $value, $Y1, $K;
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exit if ($#object < 0);
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analyse_TA() if ($Y1 & 0x1);
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exit if ($#object < 0);
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analyse_TB() if ($Y1 & 0x2);
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exit if ($#object < 0);
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analyse_TC() if ($Y1 & 0x4);
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exit if ($#object < 0);
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analyse_TD() if ($Y1 & 0x8);
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# the rest are historical byets
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print "+ Historical bytes: @object\n";
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if (! $mpcard)
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{
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print "Your card is not a microprocessor card. It seams to be memory card.\n";
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exit;
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}
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# find the corresponding card type
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find_card($atr, $SMARTCARD_LIST, @LIST_PATH);
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######## Sub functions
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# _____ _
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# |_ _|/ \
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# | | / _ \
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# | |/ ___ \
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# |_/_/ \_\
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#
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sub analyse_TA()
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{
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$value = hex(shift(@object));
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printf (" TA($counter) = %02X --> ", $value);
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# TA1 Analysis
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if ($counter == 1)
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{
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my $F = $value >> 4;
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my $D = $value % 16;
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$value=$Fi[$F]/$Di[$D] if ($Di[$D] ne "RFU");
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printf "Fi=%s, Di=%s, %.3f cycles/ETU", $Fi[$F], $Di[$D], $value;
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}
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# TA2 Analysis - TA2 is the specific mode byte
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if ($counter==2)
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{
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my $F=$value >> 4;
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my $D=$value % 16;
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printf ("Protocol to be used in spec mode: T=%s", $D);
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if ($F & 0x8)
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{
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print " - Unable to change";
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}
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else
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{
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print " - Capable to change";
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}
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if ($F & 0x1)
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{
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print " - implicity defined";
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}
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else
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{
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print " - defined by interface bytes";
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}
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}
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# TA3 Analysis
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if ($counter>=3)
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{
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if ($T==1)
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{
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printf ("IFSC: %s", $value);
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}
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else
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{ #### T <> 1
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my $F=$value >> 6;
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my $D=$value % 64;
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my $Class="(3G) ";
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$Class=$Class."A 5V " if ($D & 0x1);
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$Class=$Class."B 3V " if ($D & 0x2);
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$Class=$Class."C 1.8V " if ($D & 0x4);
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$Class=$Class."D RFU " if ($D & 0x8);
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$Class=$Class."E RFU" if ($D & 0x10);
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printf ("Clock stop: %s - Class accepted by the card: %s", $XI[$F],$Class);
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}
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}
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print "\n";
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} # analyse_TA()
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# _____ ____
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# |_ _| __ )
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# | | | _ \
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# | | | |_) |
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# |_| |____/
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#
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sub analyse_TB()
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{
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$value=hex(shift(@object));
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printf (" TB($counter) = %02X --> ", $value);
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my $I = $value >> 5;
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my $PI = $value % 32;
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if ($counter == 1)
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{
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print "Programming Param P: $PI Volts, I: $I milli-Amp?res";
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}
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if ($counter == 2)
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{
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print "Programming param PI2 (PI1 sould be ignored): ";
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if (($value>49)||($value<251))
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{
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print "$value (dV)";
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}
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else
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{
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print "$value is RFU";
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}
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}
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if ($counter >= 3)
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{
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if ($T == 1)
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{
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my $BWI=$value >> 4;
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my $CWI=$value % 16;
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printf ("Block Waiting Integer: %s - Character Waiting Integer: %s", $BWI, $CWI);
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}
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}
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print "\n";
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} # analyse_TB()
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# _____ ____
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# |_ _/ ___|
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# | || |
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# | || |___
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# |_| \____|
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#
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sub analyse_TC()
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{
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$value=hex(shift(@object));
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printf (" TC($counter) = %02X --> ", $value);
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if ($counter == 1)
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{
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print "Extra guard time: $value";
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}
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if ($counter == 2)
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{
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printf ("Work waiting time: 960 x %d x (Fi/F)", $value);
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}
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if ($counter >= 3)
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{
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if ($T==1)
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{
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printf ("Error detection code: ");
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if ($value==1)
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{
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print "CRC";
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}
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elsif ($value==0)
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{
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print "LRC";
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}
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else
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{
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print "RFU";
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}
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}
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}
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print "\n";
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} # analyse_TC()
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# _____ ____
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# |_ _| _ \
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# | | | | | |
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# | | | |_| |
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# |_| |____/
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#
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sub analyse_TD()
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{
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my $str='';
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$value = hex(shift(@object));
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my $Y = $value >> 4;
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$T=$value % 16;
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if ($T == 15)
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{
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$str=" - Global interface bytes following";
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}
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printf (" TD($counter) = %02X --> Y(i+1) = %04b, Protocol T = $T$str\n", $value, $Y);
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$counter++;
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print "-----\n";
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exit if ($#object < 0);
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analyse_TA() if ($Y & 0x1);
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exit if ($#object < 0);
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analyse_TB() if ($Y & 0x2);
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exit if ($#object < 0);
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analyse_TC() if ($Y & 0x4);
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exit if ($#object < 0);
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analyse_TD() if ($Y & 0x8);
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} # analyse_TD()
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# _____ _ _ _
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#| ___(_)_ __ __| | ___ __ _ _ __ __| |
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#| |_ | | '_ \ / _` | / __/ _` | '__/ _` |
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#| _| | | | | | (_| | | (_| (_| | | | (_| |
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#|_| |_|_| |_|\__,_| \___\__,_|_| \__,_|
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#
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sub find_card($$@)
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{
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my $atr = shift;
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my $file = shift;
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my @path = @_;
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my ($line, $found, $p);
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foreach $p (@path)
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{
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if (-e "$p/$file")
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{
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$file = "$p/$file";
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last;
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}
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}
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$found = 0;
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print "\nPossibly identified card:\n";
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open FILE, "< $file" or die "Can't open $file: $!\n";
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while ($line = <FILE>)
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{
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next if ($line =~ m/^#/); # comment
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next if ($line =~ m/^$/); # empty line
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next if ($line =~ m/^\t/); # description
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chomp $line;
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if ($atr =~ m/^$line$/i)
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{
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# print the card ATR if a regular expression was used
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print "$atr\n" if (uc $line ne uc $atr);
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print "$line\n"; # print the matching ATR
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$found = 1;
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# print until a line do not start by a tabulation
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while (($line = <FILE>) =~ m/^\t/)
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{
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print $line; # print the card description
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}
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}
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}
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close FILE;
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if ((! $found) && ($atr =~ m/^[3B|3F]/))
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{
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print "\tNONE\n\n";
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print "Your card is not present in the database.\n";
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print "You can get the latest version of the database from\n";
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print " http://ludovic.rousseau.free.fr/softwares/pcsc-tools/smartcard_list.txt\n";
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print "If your ATR is still not in the latest version then please send a mail\n";
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print "to <ludovic.rousseau\@free.fr> containing:\n";
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print "- your ATR\n";
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print "- a card description\n";
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}
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} # find_card($$)
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