class ActionDispatch::Cookies::SignedKeyRotatingCookieJar

def initialize(parent_jar)
  super
  secret = request.key_generator.generate_key(request.signed_cookie_salt)
  @verifier = ActiveSupport::MessageVerifier.new(secret, digest: signed_cookie_digest, serializer: SERIALIZER)
  request.cookies_rotations.signed.each do |(*secrets)|
    options = secrets.extract_options!
    @verifier.rotate(*secrets, serializer: SERIALIZER, **options)
  end
end