SecurityWeek: How Quantum Computing Will Impact Cybersecurity https://www.securityweek.com/how-quantum-computing-will-impact-cybersecurity/ #Quantumcryptography #QuantumComputing #DataProtection #Quantumsecure #encryption

"Start me up Monday – Training quantum Engineers" zum Thema #quantum #quantumcomputing #quantumtechnology #quantumcryptography #security und mehr an der Fachhochschule Technikum Wien.

https://www.technikum-wien.at/events/start-me-up-monday-get-quantum-ready/

SecurityWeek: Google Releases Security Key Implementation Resilient to Quantum Attacks https://www.securityweek.com/google-releases-security-key-implementation-resilient-to-quantum-attacks/ #Postquantumcryptography #Quantumcryptography #Identity&Access #cryptography #securitykey #google

SecurityWeek: Google Releases Security Key Implementation Resilient to Quantum Attacks https://www.securityweek.com/google-releases-security-key-implementation-resilient-to-quantum-attacks/ #Postquantumcryptography #Quantumcryptography #Identity&Access #cryptography #securitykey #google

SecurityWeek: Google Releases Security Key Implementation Resilient to Quantum Attacks https://www.securityweek.com/google-releases-security-key-implementation-resilient-to-quantum-attacks/ #Postquantumcryptography #Quantumcryptography #Identity&Access #cryptography #securitykey #google

Referenced link: https://hackernoon.com/enhancing-cryptography-with-quantum-circuits-and-key-distribution
Discuss on https://discu.eu/q/https://hackernoon.com/enhancing-cryptography-with-quantum-circuits-and-key-distribution

Originally posted by HackerNoon | Learn Any Technology / @hackernoon: http://nitter.platypush.tech/hackernoon/status/1654169155124199445#m

Learn about quantum computing in cybersecurity by exploring quantum circuits, cryptography protocols, and key distribution. - https://hackernoon.com/enhancing-cryptography-with-quantum-circuits-and-key-distribution #quantumcryptography #quantumcomputing

#quantumcomputing #cryptography #quantumcryptography #qkd

https://2023.qcrypt.net/

Updated with 73 entrees and, thanks to a suggestion from Jack Krupansky, a wine list with 18 algorithms. More is forthcoming.

https://medium.com/the-modern-scientist/quantum-computing-product-menu-965bf32439d2 #quantum #quantumcomputing #quantumcomputer #quantumtech #quantumtechnology #quantumcommunication #quantummachinelearning #quantumentanglement #quantumtechnologies #quantumcomputers #quantuminternet #quantumcryptography

Side-Channel Attack against CRYSTALS-Kyber https://www.schneier.com/blog/archives/2023/02/side-channel-attack-against-crystals-kyber.html #quantumcryptography #side-channelattacks #quantumcomputing #machinelearning #academicpapers #Uncategorized #cryptography #encryption

Ah! This is indeed in the works! draft from December 2022 of "a post-quantum public-key algorithm extension for the OpenPGP protocol. Given the generally assumed threat of a cryptographically relevant quantum computer, this extension provides a basis for long-term secure OpenPGP signatures and ciphertexts. Specifically, it defines composite public-key encryption based on CRYSTALS-Kyber, composite public-key signatures based on CRYSTALS-Dilithium, both in combination with elliptic curve cryptography, and SPHINCS+ as a standalone public key signature scheme"

#cryptography #pgp #openpgp #gpg #quantum #quantumcomputing #quantumcomputers #quantumcryptography

https://datatracker.ietf.org/doc/draft-wussler-openpgp-pqc/

I recently read a very interesting paper on Leakage-Abuse Attacks against Order-Preserving Encryption (OPE) schemes and Order-Revealing Encryption (ORE) Schemes.

In this paper, the researchers show how the widely used encryption schemes are inadequate. Here are some snippets from the paper.

Order-preserving encryption (#OPE) - ensures that Ek(m1)<Ek(m2) for m1<m2 and Ek the encryption algorithm. Most widely used scheme is #BCLO.

Order-revealing encryption (#ORE) - reveals ordering relations by way of a public comparison function that operates on pairs of plaintexts. Most widely used scheme is #CLWW.

Popular belief is that OPE and ORE schemes remain secure in practice for plaintext data drawn from larger domains, and practitioners could simply avoid using OPE for small-domain data.

The researchers used a non-crossing attack (min-weight non-crossing #bipartite matching) which runs in only a few hours, even for the largest target dataset, against real-world datasets using the BCLO scheme to encrypt a set of first names.

Using this attack they were able to recover almost half the data set. The leakage was even worse for last names, with almost 97% of last names trivially recoverable.

#Composition of the two (BCLO & CLWW) schemes does #decrease attack accuracy but is still far from providing acceptable security.

Exploiting known plaintexts is even easier.

Attacking frequency-hiding schemes - #Kerschbaum recently introduced a scheme that hides frequency information. However, a “#binomial” attack performs reasonably well, recovering on average 30% of first names and 7% of last names. Notably, it recovers majority of high-frequency plaintexts (despite not having frequency information leaked), suggesting these plaintexts are particularly poorly protected by any order-revealing scheme.

In terms of countermeasures, an obvious suggestion is to move towards less leaky schemes, such as those that only reveal order, including Kerschbaum's scheme and the more recent #Boneh et al. scheme based on #multilinear maps. Unfortunately in most settings there exists inherent #challenges to deployment of these schemes. Kerschbaum's scheme is relatively efficient, but requires client-side state which impedes scaling. The Boneh et al. scheme has ciphertexts larger by 10 orders of magnitude than BCLO ciphertexts and requires tens of minutes to compute encryptions.

#encryption #quantumcomputing #quantumcryptography

Alright, here we go Mastodon 😄

A small #introduction:
I am a #PhD student at the Institut de Physique Théorique (Université Paris-Saclay/CEA) working on #QuantumInformation. My main focus is #QuantumCryptography (mostly device-independent quantum key distribution) but I am also interested in #QuantumComputing.

I will (mainly) post about our papers, but I might also toot about some of my other interests (#linux stuff, bouldering, political topics, ...). Looking forward to connect with y'all 😊

Where would you put the #quantumcomputing #QuantumSensing and #quantumcryptography / #qkd? In what stage is what technology? What is your opinion? 🤔

Prof Leymann explained today the underlying #mathematics of Shor's algorithm without actually going deeper into #quantumcomputing as on the one slides. TIL on what shoulders even a mathematical genius like Peter Shor is standing. All the theories were there, but he combined all this a specific way, which enables QC to break the security (sooner or later or never).

Mind blowing this was. 🤯

#pqc #quantumcryptography #cryptography

That such a simulation is impossible is the conclusion of so-called ‘Bell’s theorem’. Therefore ‘Bell’s theorem’ must be fallacious.

That #QuantumComputers (and #QuantumCryptography, which is pure snake oil) are taking advantage of some special ‘quantum’ property is a conclusion that depends on ‘Bell’s theorem’. Thus this conclusion also is fallacious.

Okay, it is time for me to irritate the #science hashtaggers who actually are very unscientific. Perhaps they agree with Neil deGrasse Tyson, that ‘objective reality’ (or some such misused phrase) is whatever the orthodox consensus says it is.

I should irritate also the snake-oil salesmen who deal in #QuantumCryptography and those earning their pay on the misuse of funds called #QuantumComputing.

So let’s just have my first foray here ...

#introduction

I lead a group in #quantum technologies at a US national lab. My background is in quantum #optics, but these days I spend my time primarily thinking about things like #QuantumComputing, #QuantumNetworks, #QuantumCommunications, #QuantumSensing, and #QuantumCryptography.

I am also an Ambassador for Optica (formerly the Optical Society or OSA). In my role as Optica Ambassador, I engage in outreach and mentorship to students and early career professionals within the optics and photonics community.

Me as a comic:

Mastercard’s New Card: Safer From Quantum Attacks? - Quantum computers present a unique threat to many aspects of modern information te... - https://hackaday.com/2022/10/25/mastercards-new-card-safer-from-quantum-attacks/ #post-quantumcryptography #quantumcryptography #quantumcomputer #currentevents #securityhacks #paymentcard #creditcard #debitcard #interest #card

Mastercard’s New Card: Safer From Quantum Attacks?

https://hackaday.com/2022/10/25/mastercards-new-card-safer-from-quantum-attacks/

#post-quantumcryptography #quantumcryptography #quantumcomputer #CurrentEvents #SecurityHacks #paymentcard #creditcard #debitcard #Interest #card

NIST’s Post-Quantum Cryptography Standards https://www.schneier.com/blog/archives/2022/08/nists-post-quantum-cryptography-standards.html #quantumcryptography #quantumcomputing #Uncategorized #cryptanalysis #cryptography #algorithms #NIST