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147 lines
2.7 KiB
Perl
147 lines
2.7 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 Crypt::PBKDF2;
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use Digest::HMAC qw (hmac_hex);
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use Digest::SHA qw (sha1);
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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 $param = shift;
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my $param2 = shift;
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my $param3 = shift;
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my $param4 = shift;
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my $param5 = shift;
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my $param6 = shift;
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my $iterations = 1000;
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my $type = 0;
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if (defined $param)
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{
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$type = $param;
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}
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my $mode = 1 + int rand (3);
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if (defined $param2)
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{
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$mode = $param2;
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}
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my $magic = 0;
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if (defined $param3)
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{
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$magic = $param3;
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}
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if (defined $param4)
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{
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$salt = $param4;
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}
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$salt = substr ($salt, 0, 8 + ($mode * 8));
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my $compress_length = 0;
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if (defined $param5)
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{
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$compress_length = $param5;
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}
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my $data = "";
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if (defined $param6)
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{
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$data = $param6;
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}
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my $key_len = (8 * ($mode & 3) + 8) * 2;
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my $out_len = $key_len + 2;
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my $salt_bin = pack ("H*", $salt);
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my $hasher = Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA1');
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my $pbkdf2 = Crypt::PBKDF2->new
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(
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hasher => $hasher,
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iterations => $iterations,
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output_len => $out_len
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);
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my $key = $pbkdf2->PBKDF2_hex ($salt_bin, $word);
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my $verify_bytes = substr ($key, -4); $verify_bytes =~ s/^0+//; #lol
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$key = substr ($key, $key_len, $key_len);
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my $key_bin = pack ("H*", $key);
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my $auth = hmac_hex ($data, $key_bin, \&sha1, 64);
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my $hash = sprintf ('$zip2$*%u*%u*%u*%s*%s*%x*%s*%s*$/zip2$', $type, $mode, $magic, $salt, $verify_bytes, $compress_length, $data, substr ($auth, 0, 20));
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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_in, $word) = split ":", $line;
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return unless defined $hash_in;
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return unless defined $word;
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my @data = split ('\*', $hash_in);
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return unless scalar @data == 10;
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my $tag_start = shift @data;
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my $type = shift @data;
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my $mode = shift @data;
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my $magic = shift @data;
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my $salt = shift @data;
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my $verify_bytes = shift @data;
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my $length = shift @data;
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my $data = shift @data;
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my $auth = shift @data;
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my $tag_end = shift @data;
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return unless ($tag_start eq '$zip2$');
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return unless ($tag_end eq '$/zip2$');
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my $param = $type;
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my $param2 = $mode;
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my $param3 = $magic;
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my $param4 = $salt;
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my $param5 = $length;
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my $param6 = $data;
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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, $param, $param2, $param3, $param4, $param5, $param6);
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return ($new_hash, $word);
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}
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1;
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