Quantum Computers Are Not a Threat to 128-bit Symmetric Keys

The advancing threat of cryptographically-relevant quantum computers has made it urgent to replace currently-deployed asymmetric cryptography primitives—key exchange ECDH and digital signatures RSA, ECDSA, EdDSA—which are vulnerable to Shor’s quantum algorithm. It does not, however, impact existi...

Apple Announces Post-Quantum Encryption Algorithms for iMessage

Apple announced PQ3, its post-quantum encryption standard based on the Kyber secure key-encapsulation protocol, one of the post-quantum algorithms selected by NIST in 2022. Theres a lot of detail in the Apple blog post, and more in Douglas Stabilas security analysis. I am of two minds about this...

Improving the Cryptanalysis of Lattice-Based Public-Key Algorithms

The winner of the Best Paper Award at Crypto this year was a significant improvement to lattice-based cryptanalysis. This is important, because a bunch of NISTs post-quantum options base their security on lattice problems. I worry about standardizing on post-quantum algorithms too quickly. We are...

Friday Squid Blogging: New SQUID

There's a new SQUID: A new device that relies on flowing clouds of ultracold atoms promises potential tests of the intersection between the weirdness of the quantum world and the familiarity of the macroscopic world we experience every day. The atomtronic Superconducting QUantum Interference Devi...

GCHQ on Quantum Key Distribution

The UK's GCHQ delivers a brutally blunt assessment of quantum key distribution: QKD protocols address only the problem of agreeing keys for encrypting data. Ubiquitous on-demand modern services such as verifying identities and data integrity, establishing network sessions, providing access contro...

Post-Quantum RSA

Interesting research on a version of RSA that is secure against a quantum computer: Post-quantum RSA Daniel J. Bernstein, Nadia Heninger, Paul Lou, and Luke Valenta Abstract: This paper proposes RSA parameters for which 1 key generation, encryption, decryption, signing, and verification are...

NIST Calls Development of Quantum-Proof Encryption Algorithms

Quantum Computers – Boon or Bane? Quantum computers can perform operations much more quickly and efficiently even with the use of less energy than conventional computers, but that's bad news for encryption — a process which scrambles data according to a massively complex mathematical code. In...

Web Encryption Protocol That Even Quantum Computers Can't Crack

Sometimes, instead of black and white we tend to look out, how a grey would look? Yes, today we are going to discuss the ‘entangling’ or ‘superpositioning’ which is a power packed functionality of quantum computers. And simultaneously, how can they pose a threat when fully launched in the world...

Entangled Photons on Silicon Chip: Secure Communications & Ultrafast Computers

With the rise in technology, the need of ultrafast quantum computer has also increased that can work on huge numbers and calculations at the same time. Quantum technology has long been a scientific dream, but now it is a step closer to becoming a reality after a team of scientists has figured out...