I wanted something capable of encrypting a file/archive/furryporn/whatever in a way that it was encrypted for N persons but only a willi quorum of X persons was needed to decypher it.
I looked into "Shamir secret sharing" but I find that generating a new secret that should be distributed among the interested parties could be the key for failure.
### requirements:
* for encryption needs to use something you use (read: refresh) often
* needs to be a technology/piece of software that should survive for some years