A new proof shows quantum cryptography can be built on problems even harder than NP, offering security beyond classical encryption. Researchers introduced "one-way puzzles" to replace traditional cryptographic foundations.

https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/

These are clever people: Quantum Scientists Building New Math of Cryptography
https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/
One-way function
https://en.wikipedia.org/wiki/One-way_function
Quantum cryptography
https://en.wikipedia.org/wiki/Quantum_cryptography
Permanent (mathematics)
https://en.wikipedia.org/wiki/Permanent_(mathematics)
♯P-completeness of 01-permanent
https://en.wikipedia.org/wiki/%E2%99%AFP-completeness_of_01-permanent

Curious about the latest in #cryptography and #security research? The new COSIC newsletter gives you a two-month snapshot of our key achievements and updates. Read it here: https://www.esat.kuleuven.be/cosic/sites/newsletter/2025/07/24/cosic-newsletter-june-july/

I finally finished by browser-based randomness nonsense. Let me know what you think.

https://atoponce.github.io

I think that the #openweb and #privacy are orthogonal. If #InformationWantsToBeFree then why are you using #cryptography?

They are both good things, but you can't be doing them both at the same time.

Replication of Quantum Factorisation Records with an 8-bit Home Computer, an Abacus, and a Dog: a snarky take on how unimpressive these records actually are

https://eprint.iacr.org/2025/1237.pdf

Factoring primes using an abacus and a dog - https://eprint.iacr.org/2025/1237.pdf #quantum #cryptography

is it weird that "I built a toy cryptography system" is treated sooo much worse compared to "I built a hobby kernel", or "I built a toy DB" or "I built an orchestrator for my home lab"? I've seen people be like "just use postgres/sqlite", sure - but that's different from "[clutches pearls], No SQL? How dare you. Perish the thought! It's not ACID! How will we ever... Never use this in production. Microkernels? They'll never be practical!"

Frequently Asked Questions about FHE https://lobste.rs/s/tihya6 #cryptography #math
https://www.jeremykun.com/frequently-asked-questions-about-fhe/

DeadSwitch Vault - Emacs-based KeppassXC database GPG encryption for Ghosts: streamlined!

https://github.com/DeadSwitch404/ds-vault

- Sane command names
- More helpful readme
- Nicer help command

> Researchers claim to have used a #quantumComputer to factor a 2,048-bit #RSA integer.

> But the RSA number evaluated was the product of two prime factors that were too close together.

> As with a parlor magician's card deck that's been stacked for a card trick

> #Quantum #factorization is performed using sleight-of-hand numbers that have been selected to make them very easy to factorize using a #physics experiment

https://www.theregister.com/2025/07/17/quantum_cryptanalysis_criticism/

Interested in theoretical cryptography and/or formal methods? Boston University is hosting a summer school on Universally Composable Security and the EasyUC framework for formalizing UC models and proofs.

The school is from August 11 - 14, 2025. Registration is free, and we're supporting both in person and Zoom participation.

For more information and to register, visit:

https://www.bu.edu/riscs/events/uc-easyuc-summer-school/

A Wide Reduction Trick (2022) https://lobste.rs/s/1h5jiu #cryptography
https://words.filippo.io/wide-reduction/

The FIPS 140-3 Go Cryptographic Module via @RunxiYu https://lobste.rs/s/fr2d8a #cryptography #go #law
https://go.dev/blog/fips140

Encrypting Files with Passkeys and age https://lobste.rs/s/deydno #cryptography #security
https://words.filippo.io/passkey-encryption/

NATO seeks custom software tool to test cryptographic standards compliance https://www.byteseu.com/1194954/ #cryptography #Europe #NATO #NatoCommunicationsAndInformationAgency #NatoKeyManagementInteroperabilitySpecification

SAVAGE DISS #quantum #cryptography

Oh dear.

Researchers figure out how to undermine Fiat-Shamir and the Random Oracle Model to validate untrue inputs.

This has quite serious potential implications for blockchain trust although the full extent isn’t yet known.

https://www.quantamagazine.org/computer-scientists-figure-out-how-to-prove-lies-20250709/