#!/usr/bin/perl # Written by Simon Josefsson . # Copyright (c) 2009 Yubico AB # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following # disclaimer in the documentation and/or other materials provided # with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. use strict; use POSIX qw(strftime); sub usage { print "Usage: ykksm-gen-keys.pl [--verbose] [--help]\n"; print " [--urandom] [--progflags PROGFLAGS] START [END]\n"; print "\n"; print " Tool to generate keys on the YKKSM-KEYPROV format.\n"; print "\n"; print " START: Decimal start point.\n"; print "\n"; print " END: Decimal end point, if absent START is used as END.\n"; print "\n"; print " --urandom: Use /dev/urandom instead of /dev/random as entropy source.\n"; print "\n"; print " --progflags PROGFLAGS: Add a final personalization configuration string.\n"; print "\n"; print "Usage example:\n"; print "\n"; print " ./ykksm-gen-keys.pl --urandom 1 10 |\n"; print " gpg -a --sign --encrypt -r 1D2F473E > keys.txt\n"; print "\n"; exit 1; } if ($#ARGV==-1) { usage(); } my $verbose = 0; my $device = "/dev/random"; my $progflags; while ($ARGV[0] =~ m/^-(.*)/) { my $cmd = shift @ARGV; if (($cmd eq "-v") || ($cmd eq "--verbose")) { $verbose = 1; } elsif (($cmd eq "-h") || ($cmd eq "--help")) { usage(); } elsif ($cmd eq "--urandom") { $device = "/dev/urandom"; } elsif ($cmd eq "--progflags") { $progflags = "," . shift; } } sub hex2modhex { my $_ = shift; tr/0123456789abcdef/cbdefghijklnrtuv/; return $_; } sub gethexrand { my $cnt = shift; my $buf; open (FH, $device) or die "Cannot open $device for reading"; read (FH, $buf, $cnt) or die "Cannot read from $device"; close FH; return lc(unpack("H*", $buf)); } # main my $now = strftime "%Y-%m-%dT%H:%M:%S", localtime; my $start = shift @ARGV; my $end = shift @ARGV || $start; my $ctr; print "# ykksm 1\n"; print "# start $start end $end device $device\n" if ($verbose); print "# serialnr,identity,internaluid,aeskey,lockpw,created,accessed[,progflags]\n"; $ctr = $start; while ($ctr <= $end) { my $hexctr = sprintf "%012x", $ctr; my $modhexctr = hex2modhex($hexctr); my $internaluid = gethexrand(6); my $aeskey = gethexrand(16); my $lockpw = gethexrand(6); print "# hexctr $hexctr modhexctr $modhexctr\n" if ($verbose); printf "$ctr,$modhexctr,$internaluid,$aeskey,$lockpw,$now,$progflags\n"; $ctr++; } exit 0;