Specifying Oblivious Pseudonymization

In this blog post we announce an executable specification in the hacspec specification language for the ScrambleDB pseudonymization system, developed by Cryspen as part of the BMBF ATLAS project.

Internet Defense Prize 2023

Cryspen co-founders win Usenix Security prizes

At the 32nd Usenix Security Symposium in Anaheim CA, a paper on the Messaging Layer Security Protocol, co-authored by our founders Jonathan Protzenko and Karthikeyan Bhargavan, was awarded both the …

Prairie and Atlas

Privacy-Preserving Data Analysis at Cryspen

With the widespread adoption and deployment of machine learning across enterprises, ever-increasing amounts of data are being collected, stored, communicated, combined, and computed over by …

Three (thousand) may keep a secret

An introduction to Messaging Layer Security

“Three may keep a secret, if two of them are dead.” - Benjamin Franklin (1735) However skeptical we may be of our human ability to keep secrets, we still routinely participate in group conversations …

MLS - RFC 9420

A new standard for secure messaging

✨ We are thrilled to announce the release of the MLS specification as RFC 9420. RFC 9420 is a comprehensive description of the first standardised, efficient, asynchronous, key establishment protocol …

Welcome Jonas

📢 Exciting News! 🚀 We are thrilled to welcome Dr. Jonas Schneider-Bensch, to the Cryspen family as our newest R&D Cryptography Engineer!

Cryspen @ RWC 2023

At Real World Crypto 2023 in Tokyo, we gave a talk on the hacspec language, the hax tool, and the libcrux crypto library.

HACL Packages v0.6

Today, we announce the first release of the HACL Packages libraries. 🎉 This release of HACL packages includes the first release of the HACL C library and a new release of the hacl-star OCaml …

OpenMLS

We have joined forces with our friends from Phoenix R&D to improve OpenMLS. The MLS protocol draft is in the IETF working group’s last call and is thus on track to become an RFC soon. We …