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80 lines
1.5 KiB
80 lines
1.5 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 MIME::Base64 qw (encode_base64);
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use Digest::SHA qw (sha512);
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use Crypt::PBKDF2;
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use Encode;
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sub module_constraints { [[0, 256], [0, 256], [-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 $kdf = Crypt::PBKDF2->new
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(
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hash_class => 'HMACSHA1',
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iterations => 1000,
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output_len => 1024
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);
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my $custom_salt = substr ($salt, 0, 8);
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if (length $custom_salt < 8)
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{
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$custom_salt = substr ($custom_salt . "1244352345234", 0, 8);
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}
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my $key = $kdf->PBKDF2 ($custom_salt, $word);
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my $key_b64 = encode_base64 (sha512 ($key), "");
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my $hash = sprintf ("\$solarwinds\$0\$%s\$%s", $salt, $key_b64);
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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, $word) = split (':', $line);
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return unless defined $hash;
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return unless defined $word;
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my @data = split ('\$', $hash);
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return unless scalar @data == 5;
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shift @data;
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my $signature = shift @data;
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my $sig_dec = shift @data;
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my $salt = shift @data;
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my $digest = shift @data;
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return unless ($signature eq "solarwinds");
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return unless ($sig_dec eq "0");
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return if length ($salt) > 256;
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return unless length ($digest) == 88;
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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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