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A comment on A rudimentary quantum network link between Dutch cities. Parent comment

Re:A rudimentary quantum network link between Dutch cities by p_l on Thursday November 07, 2024 @04:49AM (#42075208)
Safer mechanisms of distributing and establishing "root" keys for identify verification (so you can then use them easier with normal D-H on normal internet) is one use case I recall from 1990s.

But few years ago I heard of some other interesting uses where quantum properties were used to essentially enable DWDM-like virtual circuit routing with higher capacity - though I would have to look again if it went anywhere or into scrap heap of quantum BS.

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Re:A rudimentary quantum network link between Dutch cities by bawolff on Thursday November 07, 2024 @07:57AM (#42076248)
> Safer mechanisms of distributing and establishing "root" keys for identify verification

Except it doesn't solve the mitm problem, so its not really safer.

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Re:A rudimentary quantum network link between Dutch cities by p_l on Thursday November 07, 2024 @04:00PM (#42080950)
The ideas discussed in 1990s suggested a way to ensure that mitm guaranteed deviation from data transmitted. How well it would work in real life I have no idea
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Re:A rudimentary quantum network link between Dutch cities by fsh on Thursday November 07, 2024 @04:59PM (#42081568)
QKD is only safe against MITM if you have pre-shared keys between the parties. At that point you might as well use symmetric cryptography which is immune against hypothetical quantum computers and infinitely more efficient than QKD.
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