Eric S Fraga writes:

> On Sunday, 25 Oct 2015 at 18:39, Nick Anderson wrote:
>> I was playing with org-crypt today and it's pretty nifty.
>>
>> While encrypting things for myself is the primary use case, I have other
>> team members that also use org-mode. It occurred to me that it would be
>> neat if I could specify a list of users to encrypt a node for. Then we
>> could share an org file and a node could be decrypted by individual.
>
> This is fundamentally difficult with a public key encryption system: you
> would have to have separate copies of the encrypted text, one for each
> recipient?
>
> Maybe you could have a separate private/public key pair that is shared
> for group work instead?

GPG supports multiple-recipient with --recipient
See
https://stackoverflow.com/questions/597188/encryption-with-multiple-different-keys/23725786#23725786

And the answer below explains how GPG/PGP does to not have to copy the
text for each recipient.
https://stackoverflow.com/questions/597188/encryption-with-multiple-different-keys/28206835#28206835

Best,

-- 
Grégoire Jadi