Technology

59969 readers

4334 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 2 years ago

MODERATORS

358

Let's Encrypt Announces New-Certificate-Every-6-Days Offering (letsencrypt.org)

submitted 2 days ago by misk@sopuli.xyz to c/technology@lemmy.world

105 comments fedilink hide all child comments

via https://it.slashdot.org/story/24/12/15/0059216/lets-encrypt-announces-new-certificate-every-6-days-offering

you are viewing a single comment's thread
view the rest of the comments

[–] treadful@lemmy.zip 5 points 1 day ago (3 children)

I'm far from an expert on PKI, but isn't the keypair used for the cert used for key exchange? Then in theory, if that key was compromised, it could allow an adversary to be able to capture and decrypt full sessions.

[–] jdw@links.mayhem.academy 4 points 1 day ago (2 children)

No. Perfect Forward Secrecy (ephemeral keys) prevents this type of replay.

[–] treadful@lemmy.zip 1 points 1 day ago

Time for a dive, thanks.

[–] Blackmist@feddit.uk 1 points 1 day ago

Although this only was added in TLS1.2 I think. I had to switch it on manually for my server.

I think it's default for TLS1.3.

[–] snowfalldreamland@lemmy.ml 5 points 1 day ago

Im also not an expert but i believe since there Is still an ephemeral DH key exchange happening an attacker needs to actively MITM while having the certificate private key to decrypt the session. Passive capturing wont work

[–] TheKMAP@lemmynsfw.com 2 points 1 day ago

Have you read about perfect forward secrecy?