Generate a Secure Link

Hello,

Within an email campaign, I require to generate a secure link to our console.

This should be a link to a console login page.  However, we'd like to verify the user arrived from the link, and within a given timeframe - not just typed the URL.

Basically, I'd like to define some kind of a token that is a known only to Marketo and console.

Here are a few options I've explored:

• Adding some kind of encryption within Designer studio.  But i didnt find if its possible.
• Using a webhook to encrypt a string and then send this string.  I didnt find such a public API [pgpEncrypt[String,key, enc_String].  My assumption is that you can then send enc_String into the email link.

Any ideas?

• Can Marketo create a signature [i know token is a Marketo reserved word...]?
• Can one upload a server side code to Marketo to create such?

Thanks - Oren