new

# File activesupport/lib/active_support/key_generator.rb, line 28
    def initialize(secret, options = {})
      @secret = secret
      # The default iterations are higher than required for our key derivation uses
      # on the off chance someone uses this for password storage
      @iterations = options[:iterations] || 2**16
      # Also allow configuration here so people can use this to build a rotation
      # scheme when switching the digest class.
      @hash_digest_class = options[:hash_digest_class] || self.class.hash_digest_class
    end