Data::Password::zxcvbn::Match::Dictionary3pm

"reversed"

Boolean, true if the token appears to be a dictionary word that's been reversed (i.e. last letter first)

"substitutions"

Hashref representing the characters that need to be substituted to make the token match a dictionary work (e.g. if the token is "s!mpl3", this hash would be "{ '!' => 'i', '3' => 'e' }").

"rank"

Number, indicating how common the dictionary word is. 1 means "most common".

"dictionary_name"

String, the name of the dictionary that the word was found in. Usually one of:

•

"english_wikipedia"

words extracted from a dump of the English edition of Wikipedia

•

"male_names", "female_names", "surnames"

common names from the 1990 US census

•

"passwords"

most common passwords, extracted from the "xato" password dump

•

"us_tv_and_film"

words from a 2006 Wiktionary word frequency study over American television and movies

"l33t"

Returns true if the token had any "substitutions" (i.e. it was written in "l33t-speak")

"make"

  my @matches = @{ Data::Password::zxcvbn::Match::Dictionary->make(
    $password,
    { # these are the defaults
      ranked_dictionaries => \%Data::Password::zxcvbn::RankedDictionaries::ranked_dictionaries,
      l33t_table => \%Data::Password::zxcvbn::Match::Dictionary::l33t_table,
    },
  ) };

Scans the $password for substrings that match words in the "ranked_dictionaries", possibly reversed, possibly with substitutions from the "l33t_table".

The "ranked_dictionaries" should look like:

  { some_dictionary_name => { 'word' => 156, 'another' => 13, ... },
    ... }

(i.e. a hash of dictionaries, each mapping words to their frequency rank) and the "l33t_table" should look like:

  { a => [ '4', '@' ], ... }

(i.e. a hash mapping characters to arrays of other characters)

"estimate_guesses"

The number of guesses is the product of the rank of the word, how many case combinations match it, how many substitutions were used, doubled if the token is reversed.

"does_word_start_upper"

"does_word_end_upper"

"is_word_all_not_upper"

"is_word_all_not_lower"

"is_word_all_upper"

  if ($self->does_word_start_upper($word)) { ... }

These are mainly for sub-classes, to use in ""feedback_warning"" and ""feedback_suggestions"".

"feedback_warning"

"feedback_suggestions"

This class suggests not using common words or passwords, especially on their own. It also suggests that capitalisation, "special characters" substitutions, and writing things backwards are not very useful.

"fields_for_json"

The JSON serialisation for matches of this class will contain "token i j guesses guesses_log10 dictionary_name reversed rank substitutions".