Comment on Breakthrough promises secure and private quantum computing at home

Danterious@lemmy.dbzer0.com ⁨8⁩ ⁨months⁩ ago

• tardigrada@beehaw.org ⁨8⁩ ⁨months⁩ ago

  “Guaranteeing security and privacy” could a strong argument imho.

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  • Danterious@lemmy.dbzer0.com ⁨8⁩ ⁨months⁩ ago

    couldn’t they get that with a regular computer?

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    • MagicShel@programming.dev ⁨8⁩ ⁨months⁩ ago

      So regular cryptography is threatened by quantum computing, for sure. I imagine you’d wind up with some kind of quantum coprocessor like we used to have for math back in the day because quantum computing isn’t a replacement for current computers.

      It would be interesting to see if having that capability locally would lead to finding other uses for it the way we did for GPUs and AI.

      That said, I expect a long timeline for this to happen. We’ll see.

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      • MonkderDritte@feddit.de ⁨8⁩ ⁨months⁩ ago

        So regular cryptography is threatened by quantum computing

        I don’t see that happen anytime soon. The theoretical advantage can’t be used because of practical disadvantages, so far.

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      • Umbrias@beehaw.org ⁨8⁩ ⁨months⁩ ago

        There are plenty of quantum resistant cryptography methods that already exist and have existed for a decade or more.

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      • dsemy@lemm.ee ⁨8⁩ ⁨months⁩ ago

        That said, cloud-based quantum cryptography has a big hole in it: the connection to the cloud.

        Read the article, the whole point is making the connection the the cloud actually secure.

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    • giloronfoo@beehaw.org ⁨8⁩ ⁨months⁩ ago

      Maybe not once quantum computers become more common.

      Our current encryption methods can be represented as wave functions. This allows a sufficiently large quantum computer to solve for the keys in very little time.

      There are new algorithms being developed that should defend against this. So you may still be correct.

      Post Quantum Cryptography

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    • dsemy@lemm.ee ⁨8⁩ ⁨months⁩ ago

      However, delegating quantum computations to a server carries the same privacy and security concerns that bedevil classical cloud computing. Users are currently unable to hide their work from the server or to independently verify their results in the regime where classical simulations become intractable. Remarkably, the same phenomena that enable quantum computing can leave the server “blind” in a way that conceals the client’s input, output, and algorithm [6–8]; because quantum information cannot be copied and measurements irreversibly change the quantum state, information stored in these systems can be protected with information-theoretic security, and incorrect operation of the server or attempted attacks can be detected—a surprising possibility which has no equivalent in classical computing.

      From the paper the article talks about

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  • frezik@midwest.social ⁨8⁩ ⁨months⁩ ago

    If you’re thinking of quantum encryption, that’s entirely separate from quantum computing.

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• Hazzia@discuss.tchncs.de ⁨8⁩ ⁨months⁩ ago

  30 years ago people were asking what use a redular citizen would have for more than a couple of megabytes of storage. So yeah I’m just going to assume AAA game powercreep.

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• frezik@midwest.social ⁨8⁩ ⁨months⁩ ago

  Limited, but there might be a few. Generating the best route between two locations might be one.

  There’s some stuff at medium sized businesses that would be useful, like how to pack a box most efficiently. Or many boxes in a truck.

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• EtzBetz@feddit.de ⁨8⁩ ⁨months⁩ ago

  Your AI Girlfriend becoming even more real probably

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• Omgboom@lemmy.zip ⁨8⁩ ⁨months⁩ ago

  Bitcoin mining

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