ZXCVBN is an Elixir implemenation of ZXCVBN. The original paper is available here.

The usage is simple:

iex> ZXCVBN.zxcvbn("password")
  %{
  calc_time: 51,
  crack_times_display: %{
    offline_fast_hashing_1e10_per_second: "less than a second",
    offline_slow_hashing_1e4_per_second: "less than a second",
    online_no_throttling_10_per_second: "less than a second",
    online_throttling_100_per_hour: "1 minute"
  },
  crack_times_seconds: %{
    offline_fast_hashing_1e10_per_second: 3.0e-10,
    offline_slow_hashing_1e4_per_second: 0.0003,
    online_no_throttling_10_per_second: 0.3,
    online_throttling_100_per_hour: 108.0
  },
  feedback: %{
    suggestions: ["Add another word or two. Uncommon words are better.",
     "Predictable substitutions like '@' instead of 'a' don't help very much"],
    warning: ""
  },
  guesses: 3,
  guesses_log10: 0.47712125471966244,
  password: "password",
  score: 0,
  sequence: [
    %{
      base_guesses: 2,
      dictionary_name: :passwords,
      guesses: 2,
      guesses_log10: 0.3010299956639812,
      i: 0,
      j: 7,
      l33t: false,
      l33t_variations: 1,
      matched_word: "password",
      pattern: :dictionary,
      rank: 2,
      reversed: false,
      token: "password",
      uppercase_variations: 1
    }
  ]
}copy

You can also pass of list of user inputs that will act as additional dictionary. This is useful for checking if the password is not same or variant of associated user inputs.

iex> ZXCVBN.zxcvbn("nepal", ["samar", "mustang", "nepal", "hello@example.com"])copy