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#! /usr/bin/perl
# genpass.pl: generate argon2id hash from a random password. Can be used
# interactively.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# Copyright (c) 2021, Miquel Lionel <lionel@les-miquelots.net>
use warnings;
use strict;
use File::Copy qw(move);
use Crypt::Argon2 qw/argon2id_pass/;
use Term::ReadKey;
use Term::ANSIColor qw(:constants);
my $salt = `openssl rand 16`;
my $opt = $ARGV[0];
sub FillConfigMk {
my $hash = shift;
$hash =~ s/\$/\\044/g;
my $mkconfig = 'config.mk';
if (-e $mkconfig){
open my $in, '<', $mkconfig or die "$!";
open my $out, '>', "$mkconfig.tmp" or die "$!";
while (<$in>){
s/ARGON2ID_HASH =.*/ARGON2ID_HASH = `printf "$hash"`/gi;
print $out $_;
}
close $out;
close $in;
move("$mkconfig.tmp", $mkconfig) or die "Uh oh, move failed: $!";
print "Done modifying $mkconfig\n";
}
}
if (defined $opt){
if ($opt eq '-i'){ # interactive
print "Password: ";
ReadMode 2;
my $pass = <STDIN>;
chomp $pass;
while (length($pass) < 10){
print "\nYour password is below 10 characters. Fix this: ";
$pass = <STDIN>;
chomp $pass;
}
print "\nRetype password: ";
my $confirm = <STDIN>;
chomp $confirm;
my $same = $pass cmp $confirm;
if (not $same == 0){
ReadMode 1;
die "\nPasswords don't match.";
}
ReadMode 1;
print "\n\nWant to see your typed password ? [y/n] : ";
my $ynchoice = <STDIN>;
chomp $ynchoice;
if ($ynchoice eq 'y' or $ynchoice eq 'o'){
print "\nYour password is ", BOLD, "$pass", RESET;
}
my $hash = argon2id_pass($pass, $salt, 3, '32M', 1, 32);
print "\nThe resulting argon2id hash is: ", BOLD, $hash, RESET, "\n";
FillConfigMk($hash);
}
}
else {
my $pass = `openssl rand -base64 32`;
chomp $pass;
print $pass,"\n";
print argon2id_pass($pass, $salt, 3, '32M', 1, 32);
}
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