On Thu, Aug 22, 2013 at 11:03 AM, Joseph Lorenzo Hall <[email protected]> wrote: > TextSecure’s upcoming iOS client (and Android data channel client) uses > a simple trick to provide asynchronous messaging while simultaneously > providing forward secrecy.
I've seen people want PGP to do this before— have every encrypted and signed message you send include a number of single use ephemeral reply coupons, to be used instead of key agreement with a fixed key... The primary argument against it is that if the receiver changes systems the messages will be undecodable. You can do things to prevent this, like backing up your tokens, but that defeats PFS. -- Liberationtech is a public list whose archives are searchable on Google. Violations of list guidelines will get you moderated: https://mailman.stanford.edu/mailman/listinfo/liberationtech. Unsubscribe, change to digest, or change password by emailing moderator at [email protected].
