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62 lines
1.1 KiB
62 lines
1.1 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 Crypt::PBKDF2;
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use Digest::SHA qw (sha512_hex);
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sub module_constraints { [[0, 256], [32, 32], [-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 $iterations = 4096;
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my $hasher = Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 512);
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my $pbkdf2 = Crypt::PBKDF2->new (
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hasher => $hasher,
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iterations => $iterations,
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output_len => 64
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);
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my $salt_bin = pack ("H*", $salt);
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my $key = $pbkdf2->PBKDF2 ($salt_bin. "AUTH_PBKDF2_SPEEDY_KEY", $word);
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my $digest = sha512_hex ($key . $salt_bin);
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my $hash = sprintf ("%s%s", uc ($digest), uc ($salt));
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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 $digest;
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return unless length ($digest) == 160;
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return unless defined $word;
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my $salt = substr ($digest, 128, 32);
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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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