this post was submitted on 26 Sep 2024
549 points (99.3% liked)

Technology

59374 readers
7416 users here now

This is a most excellent place for technology news and articles.

Our Rules

  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago
MODERATORS
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
549
NIST proposes barring some of the most nonsensical password rules (arstechnica.com)
submitted 1 month ago by [email protected] to c/[email protected]
179 comments fedilink hide all child comments
 

Here is the text of the NIST sp800-63b Digital Identity Guidelines.

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 336 points 1 month ago (76 children)

Reworded rules for clarity:

  1. Min required length must be 8 chars (obligatory), but it should be 15 chars (recommended).
  2. Max length should allow at least 64 chars.
  3. You should accept all ASCII plus space.
  4. You should accept Unicode; if doing so, you must count each code as one char.
  5. Don't demand composition rules (e.g. "u're password requires a comma! lol lmao haha" tier idiocy)
  6. Don't bug users to change passwords periodically. Only do it if there's evidence of compromise.
  7. Don't store password hints that others can guess.
  8. Don't prompt the user to use knowledge-based authentication.
  9. Don't truncate passwords for verification.

I was expecting idiotic rules screaming "bureaucratic muppets don't know what they're legislating on", but instead what I'm seeing is surprisingly sane and sensible.

[–] [email protected] 59 points 1 month ago (23 children)

I hate that anyone has to be told not to truncate passwords. Like even if you haven't had any training at all, you'd have to be advanced stupid to even come up with that idea in the first place.

[–] [email protected] 24 points 1 month ago (4 children)

Microsoft used to do that. I made a password in the late 90's for a we service and I found out that it truncated my password when they made it after it warned my my password was too long when I tried to log in. It truncated at 16 characters.

[–] [email protected] 1 points 1 month ago

The LM password hash (predecessor to NTLM) was calculated in two blocks of 7 characters from that truncated 14 characters. Which meant the rainbow table for that is much smaller than necessary and if your password is not 14 characters, then technically part of the hash is much easier to brute force, because the other missing characters are just padded with null.

load more comments (3 replies)
load more comments (21 replies)
load more comments (73 replies)