So then, how long before there is an open-source, distributed key management system, that lets you store public keys of all your friends' phones, and end encryp

So then, how long before there is an open-source, distributed key management system, that lets you store public keys of all your friends' phones, and end encrypted texts/etc with them, and which acts basically as only a key exchange service? ... I guess CALEA could be made to force them to MITM anyone doing key exchanges. Damn.