Episode 9: Off-the-Record Messaging and PKI Implementations!

Before there was Signal, before there was WhatsApp, the realm of
secure encrypted messaging was ruled by the Off-the-Record secure
messaging protocol, created as an alternative to PGP that
introduced security properties like forward secrecy and deniability
that were considered exotic at the time. Now, more than a decade
later, Off-the-Record messaging, or OTR, has been largely sidelined
by Signal variants. But a small team of cryptography engineers is
still working on pushing Off-the-Record messaging forward by
focusing on use cases that they argue aren’t sufficiently covered
by Signal. But what even is deniability, and how much does it
matter in the real-world context of secure messaging? Sofía Celi
joins us in today’s episode to talk about this and more. Links and
papers discussed in the show: * OTRv4
(https://github.com/otrv4/otrv4) Music composed by Toby Fox and
performed by Sean Schafianski
(https://seanschafianski.bandcamp.com/). Special Guest: Sofía Celi.