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Date: Thu, 15 Dec 2016 15:58:09 +0100
From: Martin Rublik <>
Subject: proposed NIST guidelines on passwords


NIST published new draft on Digital Authentication Guidline

Summary related to passwords is following:

- at least 8 chars minimum length
- at least 64 chars should be allowed by application
- printing ASCII, space and UNICODE allowed (the application should perform
normalization, little worried about this one)
- password hints should not be implemented,
- passwords should be checked by the application against: passwords
obtained from breaches, dictionary words, context specific such as
username. These passwords should not be allowed / user should be warned
- no composition rules such as different character sets
- no periodic change (unless a breach was detected)
- mandatory encryption/hashing (PBKDF2 mentioned)


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