Module: Stringent

Defined in:
lib/stringent.rb

Constant Summary collapse

TABLE = 
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'.freeze

Class Method Summary collapse

Class Method Details

.generate(entropy: 256, table: TABLE) ⇒ Object 



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# File 'lib/stringent.rb', line 6

def self.generate(entropy: 256, table: TABLE)
  number = SecureRandom.random_number(2 ** entropy)
  length = (entropy / Math.log2(table.size)).ceil

  Array.new(length) {
    number, modulo = number.divmod(table.size)
    table[modulo]
  }.join
end