January 11, 2021

NIST SP 800-63 Rev 3. Section 5.1.1

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The password policy guidelines changed in 2016. Four years later we are still enforcing passwords wrong. At least in your personal equipment practice these rules at this link. Some highlights below. Hopefully the rest of the industry and world can catch up.

[https://pages.nist.gov/800-63-3/sp800-63b.html#sec5](https://pages.nist.gov/800-63-3/sp800-63b.html#sec5)

Highlights…

Verifiers SHOULD NOT impose other composition rules (e.g., requiring mixtures of different character types or prohibiting consecutively repeated characters) for memorized secrets. Verifiers SHOULD NOT require memorized secrets to be changed arbitrarily (e.g., periodically). However, verifiers SHALL force a change if there is evidence of compromise of the authenticator.

Verifiers SHOULD permit claimants to use “paste” functionality when entering a memorized secret. This facilitates the use of password managers, which are widely used and in many cases increase the likelihood that users will choose stronger memorized secrets.

In order to assist the claimant in successfully entering a memorized secret, the verifier SHOULD offer an option to display the secret — rather than a series of dots or asterisks — until it is entered. This allows the claimant to verify their entry if they are in a location where their screen is unlikely to be observed. The verifier MAY also permit the user’s device to display individual entered characters for a short time after each character is typed to verify correct entry. This is particularly applicable on mobile devices.

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