Our philosophy

    is to make it easy

        to use public key

            based cryptography

Send public/private key message »

Set me up

In three easy steps your friends will be able to message you through Crypto-Book.

Let's do it! »


Crypto-Book was created by John Maheswaran in collaboration with Dr David Wolinsky and Prof Bryan Ford as part of the Dissent project in the computer science department at Yale University.

Full source code is available online for the encrypted Facebook message sender and for Crypto-Book Black Box.

If you have any questions/comments, get in touch!

We presented the poster below at SOSP'13.

Crypto-Book: Privacy Preserving Online Identities (SOSP'13 Poster)

HotNets'13 Paper

We published in HotNets '13 the paper below on Crypto-Book [Download pdf]

Crypto-Book: An Architecture for Privacy Preserving Online Identities