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76 lines
1.5 KiB
Perl
76 lines
1.5 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 Digest::SHA qw (sha1);
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use MIME::Base64 qw (encode_base64);
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use MIME::Base64 qw (decode_base64);
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sub module_constraints { [[0, 256], [4, 100], [-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 // 1000;
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my $verify_mode = shift // 0;
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my $salt_decoded = "";
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# Check if called through module_verify_hash
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if ($verify_mode == 1)
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{
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$salt_decoded = decode_base64($salt);
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}
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else
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{
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$salt_decoded = $salt;
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}
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my $digest = $word . $salt_decoded;
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for (my $i = 1 ; $i <= $iter ; $i++)
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{
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$digest = sha1 ($digest);
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}
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my $hash_buf = encode_base64 ($digest, "");
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my $salt_buf = encode_base64 ($salt_decoded, "");
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my $hash = sprintf ("PBKDF1:sha1:%i:%s:%s", $iter, $salt_buf, $hash_buf);
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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 $line = shift;
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my ($signature, $primitive, $iter, $salt, $hash, $word) = split (':', $line);
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return unless defined $signature;
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return unless defined $primitive;
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return unless defined $iter;
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return unless defined $salt;
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return unless defined $hash;
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return unless defined $word;
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return unless ($signature eq 'PBKDF1');
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return unless ($primitive eq 'sha1');
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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, $iter, 1);
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return ($new_hash, $word);
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}
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1;
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