[Lex Computer & Tech Group/LCTG] Researchers claim quantum device performs 9, 000-year calculation in microseconds

[Adam Broun]

 First of all, this development is a highly specific use-case, not a
general purpose computer.  Here's a better explanation
https://arstechnica.com/science/2022/06/manipulating-photons-for-microseconds-tops-9000-years-on-a-supercomputer

Second, quantum computing is likely to break encryption that relies on
prime factorization being hard, which underpins a lot of public key
systems.  But many symmetric encryption algos are unaffected.  So it will
be a challenge, but not the end of the world.



On Thu, Jun 2, 2022 at 10:04 AM Steve Isenberg <smisenberg at gmail.com> wrote:

> So this means that the security we've been feeling using complex passwords
> may end soon.
>
> According to the article, quantum computers solve a 9,000 year problem in
> 36 microseconds.  Amazing.
> So it could conceivably solve a 9,000,000 year problem in 36 milliseconds
> (36,000 microseconds) or a 250,000,000 year problem in a second.
>
> From (
> https://vpnalert.com/resources/how-long-does-it-take-to-crack-a-password/)
> it would take up to 46,000,000 years to crack a 15 character password using
> numbers, upper and lower case letters using a conventional computer; with a
> quantum computer this would be about 1/5 second.
>
> From (
> https://www.komando.com/security-privacy/check-your-password-strength/783192/)
> if you use a 18 character password with numbers, upper & lower case
> letters, and symbols it would take a conventional computer up to
> 7,000,000,000,000 (7qd) years; a quantum computer would take up to 28,000
> seconds, under 8 hours.
>
> Regards,
> -steve
>
>
> On Thu, Jun 2, 2022 at 9:08 AM <palbin24 at yahoo.com> wrote:
>
>> Interesting overview of the current state of quantum computing
>>
>> https://www.theregister.com/2022/06/02/quantum_advantage_canada/
>>
>> Peter
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