this post was submitted on 26 Sep 2024
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NIST proposes barring some of the most nonsensical password rules (arstechnica.com)
submitted 4 months ago by [email protected] to c/[email protected]
147 comments fedilink hide all child comments
 

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

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[โ€“] [email protected] 12 points 4 months ago (1 children)

Rules here are 64 as a reasonable maximum. A lot of programmers don't realize that bcrypt and scrypt max at 72 bytes (which may or may not be the same as 72 characters). You can get around it by prehashing, but meh. This is long enough even for a reasonable passphrase scheme.

[โ€“] [email protected] 6 points 4 months ago

Minor note: 64 unicode characters is potentially much more than 72 bytes.