Ruby port of zxcvbn.js
Gemfile:
gem 'zxcvbn-ruby', require: 'zxcvbn'Example usage:
$ irb
>> require 'zxcvbn'
=> true
>> Zxcvbn.test('@lfred2004', ['alfred'])
=> #<Zxcvbn::Score:0x007fd467803098 @entropy=7.895, @crack_time=0.012, @crack_time_display="instant", @score=0, @match_sequence=[#<Zxcvbn::Match matched_word="alfred", token="@lfred", i=0, j=5, rank=1, pattern="dictionary", dictionary_name="user_inputs", l33t=true, sub={"@"=>"a"}, sub_display"@ -> a", base_entropy0.0, uppercase_entropy0.0, l33t_entropy1, entropy1.0, #<Zxcvbn::Match i=6, j=9, token="2004", pattern="year", entropy=6.894817763307944], @password="@lfred2004", @calc_time=0.003436>
>> Zxcvbn.test('asdfghju7654rewq', ['alfred'])
=> #<Zxcvbn::Score:0x007fd4689c1168 @entropy=29.782, @crack_time=46159.451, @crack_time_display="14 hours", @score=2, @match_sequence=[#<Zxcvbn::Match pattern="spatial", i=0, j=15, token="asdfghju7654rewq", graph="qwerty", turns=5, shifted_count=0, entropy=29.7820508329166>], password"asdfghju7654rewq", calc_time0.00526The dictionaries used for password strength testing are loaded each request to Zxcvbn.test. If you you'd prefer to persist the dictionaries in memory (approx 20MB RSS) to perform lots of password tests in succession then you can use the Zxcvbn::Tester API:
$ irb
>> require 'zxcvbn'
=> true
>> tester = Zxcvbn::Tester.new
=> #<Zxcvbn::Tester:0x3fe99d869aa4>
>> tester.test('@lfred2004', ['alfred'])
=> #<Zxcvbn::Score:0x007fd4689c1168 @entropy=29.782, @crack_time=46159.451, @crack_time_display="14 hours", @score=2, @match_sequence=[#<Zxcvbn::Match pattern="spatial", i=0, j=15, token="asdfghju7654rewq", graph="qwerty", turns=5, shifted_count=0, entropy=29.7820508329166>], password"asdfghju7654rewq", calc_time0.00526
>> tester.test('@lfred2004', ['alfred'])
=> #<Zxcvbn::Score:0x007fd4689c1168 @entropy=29.782, @crack_time=46159.451, @crack_time_display="14 hours", @score=2, @match_sequence=[#<Zxcvbn::Match pattern="spatial", i=0, j=15, token="asdfghju7654rewq", graph="qwerty", turns=5, shifted_count=0, entropy=29.7820508329166>], password"asdfghju7654rewq", calc_time0.00526