this post was submitted on 23 Aug 2023
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Programming

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A question about passwords | characters used in them (self.programming)
submitted 1 year ago* (last edited 1 year ago) by FinancesDrone98 to c/programming
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Why do so many companies and people say that your password has to be so long and complicated, just to have restrictions?

I am in the process of changing some passwords (I have peen pwnd and it’s the password I use for use-less-er sites) and suddenly they say “password may contain a maximum of 15 characters“… I mean, 15 is long but it’s nothing for a password manager.

And then there’s the problem with special characters like äàáâæãåā ñ ī o ė ß ÿ ç just to name a few, or some even won’t let you type a [space] in them. Why is that? Is it bad programming? Or just a symptom of copy-pasta?

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[–] [email protected] 20 points 1 year ago* (last edited 1 year ago)

The new NIST guidance is to have something long. Special characters don't matter. So a good passphrase that you can remember > short line noise. NIST also recommends against constant password rotation, but to instead audit for dictionary attacks. See also: https://www.netsec.news/summary-of-the-nist-password-recommendations-for-2021/

Yes, it is bad programming. Of course, on the backend you must never store passwords in the clear. You should never grow your own hashing algorithm.