r/crypto

Help with Cryptohack challenge

I'm extremely novice to cryptography challenges, and more so to python. For the following course challenge: https://preview.redd.it/epptf5u2ak8f1.png?width=1206&format=png&auto=webp&s=9c52b1f9b1d2419d6451f08feef2e733db6df32f I've written the following program. https://preview.redd.it/rq0s2rm4ak8f1.png?width=971&format=png&auto=webp&s=cab457b4b04374ad8e1c00e84e45be8b656dc1f6 Is there something wrong with my approach? I've watched some videos on it but I'm stuck

Shamir Secret Sharing + AES-GCM file encryption tool - seeking cryptographic review

I've built a practical tool for securing critical files using Shamir's Secret Sharing combined with AES-256-GCM encryption. The implementation prioritizes offline operation, cross-platform compatibility, and security best practices. # Core Architecture 1. Generate 256-bit AES key using enhanced entropy collection …

Join us next Thursday on June 19th at 4PM CEST for an FHE.org meetup with Alexandra Henzinger, graduate student at MIT presenting "Somewhat Homomorphic Encryption from Sparse LPN".

New Quantum Algorithm Factors Numbers With One Qubit (and all the energy of a star)

Reflections on a Year of Sunlight - by Let's Encrypt, regarding certificate transparency

A Deep Dive into Logjumps: a Faster Modular Reduction Algorithm

Rewriting SymCrypt in Rust to modernize Microsoft’s cryptographic library

The Guardian launches Secure Messaging, a world-first from a media organisation, in collaboration with the University of Cambridge - Cover traffic to obscure whistleblowing

Javascript Persisted Encryption-At-Rest

hey. im working on "yet another javascript UI framework". itas intended for my personal project and i have a need for persisted encryption at rest. my projects are largely webapps and there are nuances to cybersecurity there. so to enhance …

Proofs On A Leash: Post-Quantum Lattice SNARK With Greyhound