r/crypto

Full beginner here , no knowledge of cryptography whatsoever apart from simple ciphers , what books would u recommend ?

Any books regarding history of cryptography or just some books to get into cryptography would be great

NSA cryptanalysis in the 90's

I was reading an old NSA internal publication about their reliance on HPC for cryptanalytic efforts: [https://media.defense.gov/2021/Jun/29/2002751648/-1/-1/0/NSA_AND_THE_SUPERCOMPUTER.PDF](https://media.defense.gov/2021/Jun/29/2002751648/-1/-1/0/NSA_AND_THE_SUPERCOMPUTER.PDF). My guess is it's from around 1995, as it mentions Cray Computers going bankrupt and Convex purchase by HP. On page 5 it …

QFESTA, an Efficient Isogeny-Based PQC with Small Public Key and Ciphertext Size

Concern for Speed and Scalability of NIST PQC?

While I am glad that the NIST announced support for Post-Quantum Algorithms I am concerned about their performance. Speed and scalability matters in the business world because all organizations are constrained by a budget. While I was reading [CloudFlare's blog …

Reason for not using Curve 448?

I will soon need to generate new PGP keypairs. I originally started with RSA 2048 in 2011, then transitioned to Curve 25519. Now, it's time to re-evaluate my choice of curve. Using GPG 2.4.5 I can access Curve 448. **Is …

device-to-device encryption protocol

Hello, I was looking for a device-to-device encryption protocol to secure data transfer and I decided to explore Botan and try to use session keypairs or sender key methods in c++. At the moment I'm using DH X and Ed …

Secure and Private Encrypted P2P Chat in Javascript

im working on a decentralized p2p chat app where it handles all the important cryptographic functions in browser-based javascript. the crypto functionality can be seen [here](https://github.com/positive-intentions/.github/blob/main/cryptography/Cryptography.js) (it is used as a micro frontend and loaded into the main app at …

Cryptographic Innuendos: Digital Signatures That Only The Intended Audience Can Verify