Python Now Has a Post-Quantum Encryption Library
This is good: Post-quantum cryptography is now one pip-install away for the entire Python ecosystem. With funding from the Sovereign Tech Agency, we implemented support for ML-KEM, the NIST-standard...
View ArticleGoogle Wants to Transition to Post-Quantum Cryptography by 2029
Google says that it will fully transition to post-quantum cryptography by 2029. I think this is a good move, not because I think we will have a useful quantum computer anywhere near that year, but...
View ArticleInventors of Quantum Cryptography Win Turing Award
Charles Bennett and Gilles Brassard have won the 2026 Turing Award for inventing quantum cryptography. I am incredibly pleased to see them get this recognition. I have always thought the technology to...
View ArticlePossible New Result in Quantum Factorization
I’m skeptical about—and not qualified to review—this new result in factorization with a quantum computer, but if it’s true it’s a theoretical improvement in the speed of factoring large numbers with a...
View ArticleSignal’s Post-Quantum Cryptographic Implementation
Signal has just rolled out its quantum-safe cryptographic implementation. Ars Technica has a really good article with details: Ultimately, the architects settled on a creative solution. Rather than...
View ArticleCheating on Quantum Computing Benchmarks
Peter Gutmann and Stephan Neuhaus have a new paper—I think it’s new, even though it has a March 2025 date—that makes the argument that we shouldn’t trust any of the quantum factorization benchmarks,...
View ArticleNo, the Chinese Have Not Broken Modern Encryption Systems with a Quantum...
The headline is pretty scary: “China’s Quantum Computer Scientists Crack Military-Grade Encryption.” No, it’s not true. This debunking saved me the trouble of writing one. It all seems to have come...
View ArticleMicrosoft Is Adding New Cryptography Algorithms
Microsoft is updating SymCrypt, its core cryptographic library, with new quantum-secure algorithms. Microsoft’s details are here. From a news article: The first new algorithm Microsoft added to...
View ArticleNIST Releases First Post-Quantum Encryption Algorithms
From the Federal Register: After three rounds of evaluation and analysis, NIST selected four algorithms it will standardize as a result of the PQC Standardization Process. The public-key encapsulation...
View ArticleLattice-Based Cryptosystems and Quantum Cryptanalysis
Quantum computers are probably coming, though we don’t know when—and when they arrive, they will, most likely, be able to break our standard public-key cryptography algorithms. In anticipation of this...
View ArticleApple 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. There’s a lot of detail in...
View ArticleImproving 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 NIST’s post-quantum options base their...
View ArticleQuantum Computing Skeptics
Interesting article. I am also skeptical that we are going to see useful quantum computers anytime soon. Since at least 2019, I have been saying that this is hard. And that we don’t know if it’s “land...
View ArticleImproving Shor’s Algorithm
We don’t have a useful quantum computer yet, but we do have quantum algorithms. Shor’s algorithm has the potential to factor large numbers faster than otherwise possible, which—if the run times are...
View ArticleYou Can’t Rush Post-Quantum-Computing Cryptography Standards
I just read an article complaining that NIST is taking too long in finalizing its post-quantum-computing cryptography standards. This process has been going on since 2016, and since that time there has...
View ArticleNIST Draft Document on Post-Quantum Cryptography Guidance
NIST has released a draft of Special Publication1800-38A: “Migration to Post-Quantum Cryptography: Preparation for Considering the Implementation and Adoption of Quantum Safe Cryptography.” It’s only...
View ArticleSide-Channel Attack against CRYSTALS-Kyber
CRYSTALS-Kyber is one of the public-key algorithms currently recommended by NIST as part of its post-quantum cryptography standardization process. Researchers have just published a side-channel...
View ArticleBreaking RSA with a Quantum Computer
A group of Chinese researchers have just published a paper claiming that they can—although they have not yet done so—break 2048-bit RSA. This is something to take seriously. It might not be correct,...
View ArticleNIST’s Post-Quantum Cryptography Standards
Quantum computing is a completely new paradigm for computers. A quantum computer uses quantum properties such as superposition, which allows a qubit (a quantum bit) to be neither 0 nor 1, but something...
View ArticleSIKE Broken
SIKE is one of the new algorithms that NIST recently added to the post-quantum cryptography competition. It was just broken, really badly. We present an efficient key recovery attack on the...
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