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Category: quantum computing

  • Google Wants to Transition to Post-Quantum Cryptography by 2029

    Google 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 because crypto-agility is always a good thing. Slashdot thread. Bruce Schneier…

  • Inventors of Quantum Cryptography Win Turing Award

    Inventors 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 be fantastic, even though I think it’s largely unnecessary. I wrote up my thoughts back in…

  • Possible New Result in Quantum Factorization

    Possible 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 quantum computer. Bruce Schneier Go to bruce schneier

  • Signal’s Post-Quantum Cryptographic Implementation

    Signal’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 bolt KEM onto the existing double ratchet, they allowed it to remain more or less the same as it had been. Then they…

  • Smashing Security podcast #432: Oops! I auto-filled my password into a cookie banner

    Smashing Security podcast #432: Oops! I auto-filled my password into a cookie banner We unpack how some password managers can be tricked into coughing up your secrets, with a clickjacking sleight-of-hand, what website owners can do to prevent it, and how to lock down your personal password vault. Then we time-hope to the post-quantum scramble:…

  • Cheating on Quantum Computing Benchmarks

    Cheating 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, because everyone has been cooking the books: Similarly, quantum factorisation is performed using sleight-of-hand numbers that have…