Petmail mailbox-server delivery protocol

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 …

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Anonymity, Pseudonyms, and Linkability

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

Petmail, an introduction

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 …

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