new

# File actionpack/lib/action_dispatch/middleware/cookies.rb, line 641
      def initialize(parent_jar)
        super

        if request.use_authenticated_cookie_encryption
          key_len = ActiveSupport::MessageEncryptor.key_len(encrypted_cookie_cipher)
          secret = request.key_generator.generate_key(request.authenticated_encrypted_cookie_salt, key_len)
          @encryptor = ActiveSupport::MessageEncryptor.new(secret, cipher: encrypted_cookie_cipher, serializer: SERIALIZER)
        else
          key_len = ActiveSupport::MessageEncryptor.key_len("aes-256-cbc")
          secret = request.key_generator.generate_key(request.encrypted_cookie_salt, key_len)
          sign_secret = request.key_generator.generate_key(request.encrypted_signed_cookie_salt)
          @encryptor = ActiveSupport::MessageEncryptor.new(secret, sign_secret, cipher: "aes-256-cbc", serializer: SERIALIZER)
        end

        request.cookies_rotations.encrypted.each do |(*secrets)|
          options = secrets.extract_options!
          @encryptor.rotate(*secrets, serializer: SERIALIZER, **options)
        end

        if upgrade_legacy_hmac_aes_cbc_cookies?
          legacy_cipher = "aes-256-cbc"
          secret = request.key_generator.generate_key(request.encrypted_cookie_salt, ActiveSupport::MessageEncryptor.key_len(legacy_cipher))
          sign_secret = request.key_generator.generate_key(request.encrypted_signed_cookie_salt)

          @encryptor.rotate(secret, sign_secret, cipher: legacy_cipher, digest: digest, serializer: SERIALIZER)
        elsif prepare_upgrade_legacy_hmac_aes_cbc_cookies?
          future_cipher = encrypted_cookie_cipher
          secret = request.key_generator.generate_key(request.authenticated_encrypted_cookie_salt, ActiveSupport::MessageEncryptor.key_len(future_cipher))

          @encryptor.rotate(secret, nil, cipher: future_cipher, serializer: SERIALIZER)
        end
      end