Not that is practically enforceable. If it can be decrypted at all, they could just replicate your data in an archive that doesn't self-destruct.
The only way to truly accomplish this is by either giving them air-gapped hardware that you then take back once you're finished showing them whatever you want, or by having trustworthy friends who will voluntarily destroy whatever you give them after they look at it.
I understand that. Just got wondering if I created an archive that had a time limit on the password if that limit would stand up after emailing the thing. Just can't seem to understand how that would work at all. But it is what seemed, on a rather dodgy site that I can't even remember, to be suggested as a good idea. All I remember is that it was when I first started using Ubuntu in 98 or maybe a bit later in 99 and was looking into password protected archives.
Was one of the lines of research that helped me learn to sort out sites that actually knew more than I did from those that were well written by people with little or no knowledge of the actual subject. The internet is full of such sites on just about any subject you can think of.
You can find some really, really bad advice from townies turned "homesteaders" on raising and using livestock. Dairy cow screeds are highly amusing to people that actually know something about the critters.
Blacksmithing comes and goes in popularity on the internet. Really is lot of good info out there about it. But what most people want is a simple solution to complex procedures and there are a lot of people that will tell you, at length, about some short cut twaddle. Some is just plain dangerous. The rest will give you a result that may be better than one you dream up on your own. (hint really don't quench red hot steel in motor oil - particularly with any portion of your body above said oil - is pretty flammable- popular with Smiths that teach as a demonstration of how to burn things down - or just for a fun way to get rid of used motor oil when finished with some joint project with a bunch of beer drinking Smiths).
Auto repair "advice" is also quite amusing on a lot of sites.
Had trouble sleeping the other night and it popped into my head for some reason.
If it would then it would be good for one thing I can think of. Irritating the piss out of people mainly.
Obviously anyone opening the thing and saving whatever is in it would then have the stuff for any use they wanted.