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69 lines
1.3 KiB
Perl
69 lines
1.3 KiB
Perl
#!/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 Crypt::PBKDF2;
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use Digest::MD4 qw (md4_hex);
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use Encode;
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sub module_constraints { [[0, 256], [20, 20], [-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 $iter = shift // 100;
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my $nt = md4_hex (encode ("UTF-16LE", $word));
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my $pbkdf2 = Crypt::PBKDF2->new
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(
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hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 256),
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iterations => $iter,
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output_len => 32
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);
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my $salt_buf_bin = pack ("H*", $salt);
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my $tmp = $pbkdf2->PBKDF2 ($salt_buf_bin, uc (encode ("UTF-16LE", $nt)));
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my $hash = sprintf ("v1;PPH1_MD4,%s,%d,%s", $salt, $iter, unpack ("H*", $tmp));
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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_in, $word) = split ":", $line;
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return unless defined $hash_in;
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my @data = split /\,/, $hash_in;
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return unless scalar @data == 4;
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return unless (shift @data eq 'v1;PPH1_MD4');
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my $salt = shift @data;
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my $iter = shift @data;
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return unless defined $salt;
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return unless defined $word;
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$word = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word, $salt, $iter);
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return ($new_hash, $word);
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}
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1;
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