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If you need to store any information in the cookie, because doing db lookups for same tiny pieces of information, such as a username, user id or some sorta preference.

1. Encrypt it.
2. bin2hex/urlencode/uuencode it.
3. take the md5 and append it.

If the md5 of the encrypted info doesn't match the md5 of the encrypted/md5 part, you know someone was tampering with it.

Yes, you can do a lot of caching tricks server side, but sometimes, you don't have a choice. -s

Bart: God, Schmod. I want my monkey-man.


In reply to Re: Is this a secure way to prevent cookie tampering by exussum0
in thread Is this a secure way to prevent cookie tampering by EvdB

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