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58 lines
1.2 KiB
Perl
58 lines
1.2 KiB
Perl
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#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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use Digest::SHA1 qw (sha1 sha1_hex);
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use Encode;
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sub module_constraints { [[0, 256], [0, 128], [-1, -1], [-1, -1], [-1, -1]] }
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sub module_generate_hash
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{
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my $word = shift;
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my $salt = shift;
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my $user = shift // random_mixedcase_string (random_number (0, 256 / 2));
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my $word_utf16le = encode ("UTF-16LE", $word);
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my $user_utf16le = encode ("UTF-16LE", $user);
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my $digest = sha1_hex ($salt . sha1 ($user_utf16le . ':' . $word_utf16le));
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my $hash = sprintf ("%s:%s:%s", $digest, unpack ("H*", $salt), unpack ("H*", $user));
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return $hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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my ($hash, $salt, $user, $word) = split (':', $line);
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return unless defined $hash;
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return unless defined $salt;
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return unless defined $user;
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return unless defined $word;
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return unless ($hash =~ m/^[0-9a-fA-F]{40}$/);
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return unless ($salt =~ m/^[0-9a-fA-F]{0,256}$/);
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return unless ($user =~ m/^[0-9a-fA-F]{0,256}$/);
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$salt = pack ("H*", $salt);
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$user = pack ("H*", $user);
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, $salt, $user);
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return ($new_hash, $word);
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}
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1;
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