Posts
Quantum-safe scheme for perfect-forward-secrecy
Hi all, I have implemented this scheme as part of a protocol I am working on, looking to get some eyeballs & feedback on it. Assume Alice and Bob want to talk, Alice & Bob share public keys and send each other shared secret ciphertext, and establish a shared secret …
Nitrokey 3 MacOS
Hello everyone, Has someone used a Nitrokey 3 (PIV) to secure MacOS login and FileVault and wants to share his experience (and potential caveats)?
asking for the smallest ever guidances
**Hello everyone, I hope you’re all doing well.** I’m a future general engineering student who wants to dive deeply into cryptography because of my strong attachment to mathematics. However, I’m a bit confused about the best possible self-learning roadmap. Should I start with theoretical concepts in mathematics (such as combinatorics, …
Signal Protocol in Javascript
following a previous post i made about [looking for the signal protocol in javascript](https://www.reddit.com/r/crypto/comments/1mi4ooa/looking_for_the_signal_protocol_in_javascript/) IMPORTANT: My project is not professionally audited or production ready. the signal protocol in my project is entirely redundent. this approach is to investigate encryption redundency in my app. --- edit: - Demo: https://signal.positive-intentions.com - Github: …
Danish Presidency backs away from 'chat control'
Multi-Protocol Cascading Round-Robin Cipher
I've been exploring a cryptographic concept I can't find an existing name for, and I'd appreciate the community's insight. While I suspect it's overly redundant or computationally heavy, initial testing suggests performance isn't immediately crippling. I'm keen to know if I'm missing a fundamental security or design principle. # The …
CVE-2025-8556 - Cryptographic Issues in Cloudflare's CIRCL FourQ Implementation
Length-extension attacks are still a thing
New edition of The Joy of Cryptography to be released in January 2026 with Open Access version available (sometime later) on the web
The backup superhero of Post-Quantum Cryptography
" Let me tell you the story of the newcomer HQC, the latest post-quantum cryptographic algorithm that has been selected by the National Institute of Standards and Technology (NIST) to be standardized. If you've heard of Kyber (or ML-KEM), our first cryptographic Avenger, you'll want to meet its backup superhero: …