encrypted

Returns a jar that’ll automatically encrypt cookie values before sending them to the client and will decrypt them for read. If the cookie was tampered with by the user (or a 3rd party), `nil` will be returned.

If `config.action_dispatch.encrypted_cookie_salt` and `config.action_dispatch.encrypted_signed_cookie_salt` are both set, legacy cookies encrypted with HMAC AES-256-CBC will be transparently upgraded.

This jar requires that you set a suitable secret for the verification on your app’s `secret_key_base`.

Example:

cookies.encrypted[:discount] = 45
# => Set-Cookie: discount=DIQ7fw==--K3n//8vvnSbGq9dA--7Xh91HfLpwzbj1czhBiwOg==; path=/

cookies.encrypted[:discount] # => 45