Class: PasswordText

Inherits:
String
  • Object
show all
Defined in:
lib/webget_ruby_password_text.rb

Constant Summary collapse

@@chars =

Default characters

['a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z']
@@length =

Default length

12

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(length = @@length, chars = @@chars) ⇒ PasswordText

Return a new secure random password.

The password has a given length (or the default) and is picked from a given character array (or the default).

To set the default length, see #length.

To set the default character array, see #chars

Examples

PasswordText.new => "avzwbnxremcd"
PasswordText.new(4) => "avzw"
PasswordText.new(4,['x','y','z']) => "yzyx"



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# File 'lib/webget_ruby_password_text.rb', line 64

def initialize(length=@@length,chars=@@chars)
  super(Array.new(length){chars[SecureRandom.random_number(chars.size)]}.join)
end

Class Method Details

.chars ⇒ Object

Get the default character array.

To improve usability, the passwords only use lowercase letters. This helps people who use mobile phones and also helps people who have some kinds disabilities related to manual dexterity. We also omit letters that may be confused with numbers: “i”, “l”, “o”.

We choose this as a valuable tradeoff between usability and complexity.



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# File 'lib/webget_ruby_password_text.rb', line 77

def self.chars
 @@chars
end

.chars=(chars) ⇒ Object

Set the default character array



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# File 'lib/webget_ruby_password_text.rb', line 84

def self.chars=(chars)
 @@chars=chars
end

.length ⇒ Object

Get the default length

We choose 12 characters to make a sufficiently strong password. for usual web applications. You can make this stronger as needed.



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# File 'lib/webget_ruby_password_text.rb', line 94

def self.length
 @@length||=12
end

.length=(length) ⇒ Object

Set the default length



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# File 'lib/webget_ruby_password_text.rb', line 101

def self.length=(length)
 @@length=length
end