240
submitted 1 year ago by igalmarino@lemmy.ml to c/technology@lemmy.ml
you are viewing a single comment's thread
view the rest of the comments

When you use your “one password” you’re in effect giving your device permission to access the key storage in your TPM to fetch the private key to present it to the site.

Very small correction as I understand, but your private key is never presented. The web service should never interact with the private key directly. Your device is signing some bit of data, then the server uses your public key to verify that it was signed by your private key. Its a small distinction, but is one of the principal uses of asymmetric encryption is that the public key can truly be public knowledge and given to anyone, while the private key is 100% always only accessed by you the user.

[-] Natanael@slrpnk.net 2 points 1 year ago

Yeah, the TPM should perform the signature inside of the security chip, the key is always off limits from everything else

this post was submitted on 04 Nov 2023
240 points (94.1% liked)

Technology

34989 readers
39 users here now

This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.


Ask in DM before posting product reviews or ads. All such posts otherwise are subject to removal.


Rules:

1: All Lemmy rules apply

2: Do not post low effort posts

3: NEVER post naziped*gore stuff

4: Always post article URLs or their archived version URLs as sources, NOT screenshots. Help the blind users.

5: personal rants of Big Tech CEOs like Elon Musk are unwelcome (does not include posts about their companies affecting wide range of people)

6: no advertisement posts unless verified as legitimate and non-exploitative/non-consumerist

7: crypto related posts, unless essential, are disallowed

founded 5 years ago
MODERATORS