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59 lines
1.1 KiB
Perl
59 lines
1.1 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::SHA1 qw (sha1);
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use MIME::Base64 qw (encode_base64 decode_base64);
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use Encode;
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sub module_constraints { [[0, 255], [0, 255], [0, 27], [0, 55], [0, 27]] }
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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 $digest = sha1 ($salt . encode ("UTF-16LE", $word));
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my $base64_salt_buf = encode_base64 ($salt, "");
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my $base64_hash_buf = encode_base64 ($digest, "");
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$base64_hash_buf = substr ($base64_hash_buf, 0, 27);
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my $hash = sprintf ("\$episerver\$*0*%s*%s", $base64_salt_buf, $base64_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 $line = shift;
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my ($digest, $word) = split (':', $line);
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$digest = substr ($digest, 14);
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my ($base64_salt, $base64_hash) = split ('\*', $digest);
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my $hash = decode_base64 ($base64_hash);
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my $salt = decode_base64 ($base64_salt);
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return unless defined $hash;
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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, $salt);
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return ($new_hash, $word);
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}
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1;
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