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66 lines
1.2 KiB
66 lines
1.2 KiB
#!/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::UnixCrypt_XS qw (crypt_rounds fold_password base64_to_int24 block_to_base64 int24_to_base64);
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sub module_constraints { [[1, 31], [4, 4], [-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 // random_number (1, 5000);
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my $key_value = fold_password ($word);
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my $data = "\x00\x00\x00\x00\x00\x00\x00\x00";
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my $salt_value = base64_to_int24 ($salt);
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my $hash_buf = crypt_rounds ($key_value, $iter, $salt_value, $data);
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my $tmp_hash = sprintf ("_%s%s%s", int24_to_base64 ($iter), $salt, block_to_base64 ($hash_buf));
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return $tmp_hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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return unless (substr ($line, 0, 1) eq '_');
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my $index1 = index ($line, ':', 20);
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return if ($index1 != 20);
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# iter
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my $iter = substr ($line, 1, 4);
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$iter = base64_to_int24 ($iter);
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# salt
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my $salt = substr ($line, 5, 4);
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# word / hash
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my $word = substr ($line, $index1 + 1);
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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, $iter);
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return ($new_hash, $word);
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}
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1;
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