Framework for time synchronized security tokens

Hello,

I start with developing site with authorization and I would like to ask if is there any framework or library in nette which supports time synchronized security tokens and time limited things.
I would like to send activation email after registration, but I would want the activation link to work for only limited time (30 minutes, one hour or something like that) and for forgotten password I would like to use any temporary password with limited validity.
I googled a little bit and I found nothing, so I ask if is exists or not.
Of course I could code it on my own, but it would be pitty if I wrote it and then discovered a framework/library for it.
Or if any PHP framework/library in general, not for nette, exists, it would be also great.

Thanks in advance.