decryptable

For example, if you need a document electronically signed by a particular person, then you need his or her public key cryptosystem to verify it with. and if you need mail encrypted from the sender's desktop to the recipient's desktop and decryptable only by the recipient, then you need a mail encryption system.

Citizendium, the Citizens' Compendium - Recent changes [en] 2008

Yeah well if you have data that won't be decryptable in your lifetime without a key, then you're in the green.

Original Signal - Transmitting Buzz 2008

For example, if you need mail encrypted from the sender's desktop to the recipient's desktop and decryptable only by the recipient, use PGP or another such system.

Citizendium, the Citizens' Compendium - Recent changes [en] 2008