mirror of https://github.com/dirtbags/moth.git
83 lines
2.4 KiB
Perl
Executable File
83 lines
2.4 KiB
Perl
Executable File
#!/usr/bin/perl
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### GAH PERL NOOOOOOO
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use strict;
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use warnings;
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use Getopt::Std;
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use vars qw( $VERSION @VOWELS @CONSONANTS );
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$VERSION = '1.0';
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# Digest::BubbleBabble from Benjamin Trott, cpan@stupidfool.org
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@VOWELS = split //, q{aeuioy};
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@CONSONANTS = split //, q{bcdfghklmnprstvzx};
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sub bubblebabble {
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my ($input) = @_;
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my @dgst = map { ord } split //, $input;
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my $dlen = length $input;
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my $seed = 1;
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my $rounds = int($dlen / 2) + 1;
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my $retval = 'x';
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for my $i (0..$rounds-1) {
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if ($i+1 < $rounds || $dlen % 2) {
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my $idx0 = ((($dgst[2 * $i] >> 6) & 3) + $seed) % 6;
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my $idx1 = ($dgst[2 * $i] >> 2) & 15;
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my $idx2 = (($dgst[2 * $i] & 3) + $seed / 6) % 6;
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$retval .= $VOWELS[$idx0] . $CONSONANTS[$idx1] . $VOWELS[$idx2];
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if ($i+1 < $rounds) {
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my $idx3 = ($dgst[2 * $i + 1] >> 4) & 15;
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my $idx4 = $dgst[2 * $i + 1] & 15;
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$retval .= $CONSONANTS[$idx3] . q/-/ . $CONSONANTS[$idx4];
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$seed = ($seed * 5 + $dgst[2 * $i] * 7 +
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$dgst[2 * $i + 1]) % 36;
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}
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} else {
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my $idx0 = $seed % 6;
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my $idx1 = 16;
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my $idx2 = $seed / 6;
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$retval .= $VOWELS[$idx0] . $CONSONANTS[$idx1] . $VOWELS[$idx2];
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}
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}
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$retval .= 'x';
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return $retval;
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}
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# --- END
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sub readch {
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my ($chars, $fh) = @_;
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my $retval = '';
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sysread $fh, $retval, $chars;
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return $retval;
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}
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sub usage {
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my ($msg) = @_;
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print <<'EOB';
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Usage: mktokens [options] count
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-c category name
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-s size of token hash [default: 8]
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EOB
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die "\n[x] $msg\n" if $msg;
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exit 0;
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}
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my $count = 1;
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my $size = 8;
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my $cat = '';
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my %options=();
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getopts('c:s:h', \%options);
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usage('not enough arguments!') unless scalar @ARGV > 0;
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usage() if $options{h};
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$cat = "$options{c}:1:" if $options{c} and $options{c} =~ m/\A ([[:alnum:]_-]+) \Z/msix;
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$size = $options{s} if $options{s} and $options{s} =~ m/\A (\d+) \Z/msix;
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$count = $ARGV[0] if $ARGV[0] and $ARGV[0] =~ m/\A (\d+) \Z/msix;
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open my $fh, '<', '/dev/urandom';
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print {*STDERR} "[+] Generating $count token", ($count > 1 ? 's' : ''), " [$size bytes of entropy]", $cat ? " with prefix '$cat'" : '', $/;
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print $cat, bubblebabble(readch($size, $fh)), $/ for (1 .. $count);
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close $fh;
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