class Rage::Cookies::EncryptedJar

def fallback_boxes
  @fallback_boxes ||= begin
    fallbacks = Rage.config.fallback_secret_key_base.map do |key|
      RbNaCl::SimpleBox.from_secret_key(build_key(key))
    end
    fallbacks << RbNaCl::SimpleBox.from_secret_key(
      RbNaCl::Hash.blake2b(Rage.config.secret_key_base, digest_size: 32, salt: INFO)
    )
  end
end