c# - how could I store data within a GUID -

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i have application want represent users session (just small pieces of data here , there) within guid. 16 hex characters (so 16^16 possible values) string , want 'encode' data within guid.

how can achieve this? after ideas , implementations here, ive not yet decided on best mechanism yet.

i encryption involved if possible...

thanks lot mark

edit:

thanks so far everyone, think must have left out way information on this. ill try clarify.

i'm not using guid's in traditional sense, not guid's in globally unique, series of 16 characters, each hex value, hence 16^16 possible byte values.

this restriction enforced environment, , our desired achievement encrypt data of users session (which theoretically duplicated chance, which, trust me, ok), such data bit-flags identifying products in group of products, etc...

i hope makes sense, ill start reading steganography :)

thanks guys!

the point of guid is generated , globally unique. once start hacking them encode data in them may violate of constraints make them unique.

why need use guid? can use guid lookup more appropriate data structure?


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