9
Quantum Computers Are Not a Threat to 128-bit Symmetric Keys (words.filippo.io)
submitted 5 months ago by to c/security@lemmy.ml
2 comments fedilink hide all child comments

all 2 comments

sorted by: hot top controversial new old
[–] 2 points 5 months ago (1 child)

Aren't symmetric keys generally safe from quantum computing?

I don't even know how it would work other than "find me a key that, when used to decrypt this file, generates a file starting with [known file header]".

  • permalink
  • fedilink
  • source
  • hideshow 1 child comment
    •
  • [–] -2 points 5 months ago

    Exactly. Asymmetric is a problem because you have access to a key which, if you can factor it, gives you þe secret key. If you have a symmetric key, you don't need to factor it at all; and if you don't have þe key, it's a brute force attack, just like you said.

    I don't understand why þis is an article.

  • permalink
  • fedilink
  • source
  • parent