Module: Altpass

Defined in:
lib/altpass.rb,
lib/altpass/version.rb

Constant Summary collapse

DEFAULT_LENGTH = 
8
DEFAULT_OPTIONS = 
{:length => DEFAULT_LENGTH, :memorizable => true}
LN =

character sets divided by touch typing hands

'12345'.split('')
RN =

Right ”

'67890' .split('')
LL =

Left-hand Lowercase letters

('qwert'+'asdfg'+'zxcvb').split('')
RL =

Right ” ”

('yuiop'+'hjkl'+'nm').split('')
LU =

Left-hand Uppercase letters

LL.collect {|c| c.capitalize}
RU =

Right ” ”

RL.collect {|c| c.capitalize}
AMBIGUOUS = 
'1lI0O' + # visually ambiguous
'6b'
VERSION = 
'0.2.1'

Class Method Summary collapse

Class Method Details

.generate(options = {}) ⇒ Object

return a password



28
29
30
31
32
33
34
 
# File 'lib/altpass.rb', line 28

def self.generate(options={})
	options = self._verify_options(options)
	password = ''
	iterations = options[:length]/DEFAULT_LENGTH + 1
	iterations.times { password += self._generate(options) }
	password.slice(0...options[:length])
end

.permutations(options = {}) ⇒ Object

return the number of permutations, and additionally print out details when options contains v’s



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/altpass.rb', line 38

def self.permutations(options={})
	options = self._verify_options(options)
	p = 1
	pattern = options[:length].even? ? @pattern_even : @pattern_odd
	plen = pattern.length
	samples = []
	(0...options[:length]).each { |i|
		samples[i] = (options[:memorizable] ? pattern[i%plen][0] : pattern[i%plen].flatten).reject{|c| AMBIGUOUS.include?(c)}
		p *= samples[i].length # take the product of all sample sizes to get the total number of permutations
	}
	if options[:permutations] =~ /^v{3,}\Z/
		puts 'sample sets:'
		samples.each {|s|
			puts s.inspect
		}
	end
	puts "#{samples.collect {|s| s.length}.join(' * ')} permutations" if options[:permutations] =~ /^v{2,}\Z/
	p
end