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57 lines
1.1 KiB
Perl
57 lines
1.1 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::SHA qw (sha512_hex);
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use MIME::Base64 qw (encode_base64);
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sub module_constraints { [[0, 255], [0, 255], [0, 55], [0, 55], [0, 55]] }
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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 $digest = sha512_hex ($word . $salt);
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my $base64_buf = encode_base64 (pack ("H*", $digest) . $salt, "");
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my $hash = sprintf ("{SSHA512}%s", $base64_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 $line = shift;
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my ($digest, $word) = split (':', $line);
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return unless defined $digest;
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return unless defined $word;
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my $signature = substr ($digest, 0, 9);
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my $plain_base64 = substr ($digest, 9);
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return unless ($signature eq "{SSHA512}");
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return unless defined $plain_base64;
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my $decoded = decode_base64 ($plain_base64);
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my $salt = substr ($decoded, 64);
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, $salt);
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return ($new_hash, $word);
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}
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1;
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