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55 lines
955 B
55 lines
955 B
#!/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 (sha256);
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use MIME::Base64 qw (encode_base64);
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sub module_constraints { [[0, 256], [0, 16], [-1, -1], [-1, -1], [-1, -1]] }
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sub module_generate_hash
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{
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my ($word, $salt, $iter) = @_;
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return unless defined $word;
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return unless defined $salt;
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$iter //= 1000;
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my $digest = sha256 ($salt . $word);
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for (my $i = 1; $i < $iter; $i++)
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{
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$digest = sha256 ($digest);
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}
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chomp ($digest = encode_base64 ($digest));
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my $hash = sprintf ("otm_sha256:%d:%s:%s", $iter, $salt, $digest);
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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 $line = shift;
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my ($sig, $iter, $salt, $hash, $word) = split (':', $line);
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return unless defined $iter;
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return unless defined $salt;
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return unless defined $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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