Brian's Blog petmail

Petmail senders use a "Mailbox server" to queue encrypted messages when their recipient is offline (and even when they aren't). The recipient might pick up the message right away, or might not learn about it until later. These mailboxes need a way to tell whether they should spend their precious …

Linkability

Communication systems can be evaluated on how much linkability they offer (or attempt to conceal) between different aspects of one's identity.

At one extreme, a face-to-face conversation with your long-term friend provides extremely strong linkability between two things. One is your conception of them: the idea in your head …

Petmail is a secure-communications project I've been noodling at for a couple of months now. To be honest, I guess I've been noodling at it for over a decade: this latest effort is really a reboot of a project that I did ten years ago, and presented (audio) at a …