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Despite this being a Perl site, many of us are familiar as well with other languages including PHP. In PHP sessions are used for tracking logins from one page to the next. It can involve a database or it can be in the filesystem. It can also be in a keystore like memcached. All of those are also possible in Perl.

Now it's possible to set a cookie and honor that cookie without tracking the session on the server side. That's actually quite simple to do. If you're not tracking it on the server side, though, you don't know if the cookie is forged. That is, unless you cryptographically sign a data structure on the server that includes a session ID, user ID, expiration, and such; then make sure the ciphered text is encoded to text (perhaps using something like base64); then store that in the cookie. Then when the cookie is returned the server can decode, then decrypt it, and check its validity. I doubt if you don't understand how basic sessions are tracked with existing support in the libraries though that you're quite ready to tackle that sort of solution.

In reply to Re^3: basic login by mr_mischief
in thread basic login by bigup401

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