59 lines
1.7 KiB
Perl
59 lines
1.7 KiB
Perl
package DDG::Goodie::MD4;
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# ABSTRACT: Computes the MD4 cryptographic hash function
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use strict;
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use DDG::Goodie;
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use Digest::MD4;
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zci answer_type => "md4";
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zci is_cached => 1;
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name "MD4";
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description "MD4 hash algorithm";
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primary_example_queries "md4 this string";
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secondary_example_queries "md4sum this string",
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"MD4 this string",
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"md4 hash of this string",
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"md4 base64 this string";
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category "calculations";
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topics "cryptography";
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code_url "https://github.com/duckduckgo/zeroclickinfo-goodies/blob/master/lib/DDG/Goodie/MD4.pm";
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attribution github => ["rafacas", "Rafa Casado"],
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twitter => "rafacas";
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triggers start => "md4", "md4sum";
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handle remainder => sub {
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return unless $_ =~ /^(?<enc>hex|base64|)\s*(?<str>.*)$/i;
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my $enc = lc $+{'enc'} || 'hex';
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my $str = $+{'str'} || '';
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$str =~ s/^hash\s+(.*\S+)/$1/; # Remove 'hash' in queries like 'md4 hash this'
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$str =~ s/^of\s+(.*\S+)/$1/; # Remove 'of' in queries like 'md4 hash of this'
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$str =~ s/^\"(.+)\"$/$1/; # remove quotes (e.g. md4 "this string")
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return unless $str;
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my $func_name = 'Digest::MD4::md4_' . $enc;
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my $func = \&$func_name;
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my $out = $func->($str);
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# By convention, CPAN Digest modules do not pad their Base64 output. So any
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# necessary padding will be implemented here
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if ($enc eq 'base64'){
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while (length($out) % 4) {
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$out .= '=';
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}
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}
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return $out,
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structured_answer => {
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input => [html_enc($str)],
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operation => html_enc('MD4 ' . $enc . ' hash'),
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result => html_enc($out)
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};
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};
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1;
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