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407d331c9d
The salt needs to be passed AS-IS (in hexadecimal) not converted to binary for the perl module Net::DNS::RR::NSEC3::name2hash. Thank you very much
82 lines
1.4 KiB
Perl
82 lines
1.4 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 Net::DNS::RR::NSEC3;
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use Net::DNS::SEC;
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sub module_constraints { [[1, 256], [-1, -1], [1, 55], [-1, -1], [-1, -1]] }
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sub get_random_dnssec_salt
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{
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my $salt_buf = "";
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$salt_buf .= ".";
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$salt_buf .= random_lowercase_string (8);
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$salt_buf .= ".net";
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$salt_buf .= ":";
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$salt_buf .= random_numeric_string (8);
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return $salt_buf;
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}
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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 // 1;
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if (length $salt == 0)
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{
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$salt = get_random_dnssec_salt ();
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}
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my ($domain, $salt_hex) = split (":", $salt);
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my $hashalg = Net::DNS::SEC->digtype ("SHA1");
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my $name = lc ($word . $domain);
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my $hash_buf = Net::DNS::RR::NSEC3::name2hash ($hashalg, $name, $iter, $salt_hex);
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my $hash = sprintf ("%s:%s:%s:%d", $hash_buf, $domain, $salt_hex, $iter);
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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 @datas = split (":", $line);
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return if scalar @datas != 5;
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my ($hash, $domain, $salt, $iter, $word) = @datas;
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$salt = $domain . ":" . $salt;
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return unless defined $salt;
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return unless defined $iter;
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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, $iter);
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return ($new_hash, $word);
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}
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1;
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