this post was submitted on 13 Oct 2024
105 points (81.1% liked)
Technology
59377 readers
5241 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
There's Grover's algorithm which can help in cracking the key.
https://crypto.stackexchange.com/questions/6712/is-aes-256-a-post-quantum-secure-cipher-or-not#7869
Regardless, everything sane uses 256 bit AES. Should be ok for now.
AES works with a shared key. This won't work when you want to have an encrypted connection with a webshop (how would you get the key over there in a secure way?). For this you have asynchronous key algorithms such as RSA en ECDH. These algorithms can make a secure connection without anything preshared. Usually this is used to compute a shared key and then continue over AES. These asynchronous algorithms are at risk of being cracked with quantum computers.
My point is that AES isn't untouched by quantumn computing. We now have quantumn safe asymmetric key encryption, too.
Grover's algorithm gives broad asymptotic speed-ups to many kinds of brute-force attacks on symmetric-key cryptography.
Source: https://en.m.wikipedia.org/wiki/Grover's_algorithm#Cryptography