Assange did not have to decrypt them to share them with The New York Times, The Guardian, and Der Spiegel.
Only the participants in any given chat have the keys to decrypt and read their own chats.
No one may be able decrypt its email quickly without its help.
This is because they would be only available in encrypted form and there would be no way for someone like Assange to decrypt them.
I'd decrypt it, read it, re-encrypt it with your boss's real public key and send it on.
I want you to unlock this phone and then decrypt the files in its memory.
Tomorrow, we'll bring you back and ask you to decrypt the data on these memory sticks.
Because if they can decrypt it with your public key, it can only have been encrypted with your private key.