Posts
For E2EE apps like Signal what stops the server from giving you a fake public key for a user?
Say I want to send a message to Alice. To encrypt my message to Alice doesn't Signal have to send me her public key? What stops them from sending me a fake public key? I believe that at some point in the handshake process I probably sign something that validates …
Clubcards for the WebPKI: smaller certificate revocation tests in theory and practice
To implement public key infrastructure for protocols such as TLS, parties need to check not only that certificates are properly signed, but also that they haven't been revoked, due to e.g. key compromise. Revocation was originally implemented using certificate revocation lists, but those are impractically large. Then there is OCSP, …
Apple is now legally allowed to talk about the UK's backdoor demands
Join us in two weeks on Apr 17th at 3PM CEST for an FHE.org meetup with Mohammed Lemou, Senior Researcher (Directeur de Recherche) at the French National Center for Scientific Research (CNRS), presenting "Exploring General Cyclotomic Rings in Torus-Based Fully Homomorphic Encryption: Part I"
Forming a Cryptography and Number Theory reading group
Hi everyone! I want to start a virtual reading group focused on cryptography and number theory, where we can learn together in a collaborative environment. Whether you’re a beginner or have some background, all you need is curiosity! Currently I have physical copies of these books to start with: 1. …
Adaptively-Secure Big-Key Identity-Based Encryption
JS + WebRTC + WebCrypto = P2P E2EE Messaging PWA
Selhosted P2P E2EE File Transfer & Messaging PWA * The app: [chat.positive-intentions.com](http://chat.positive-intentions.com/) * The source: [https://github.com/positive-intentions/chat](https://github.com/positive-intentions/chat) * More information about the app: [https://positive-intentions.com/docs/apps/chat](https://positive-intentions.com/docs/apps/chat) * Follow the subreddit to keep updated about the app: [r/positive\_intentions](https://www.reddit.com/r/positive_intentions/)