Bug 1007893 - Add an option to pwquality to specify minimum number of character in each class.
Add an option to pwquality to specify minimum number of character in each class.
Product: Fedora
Classification: Fedora
Component: libpwquality (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Tomas Mraz
Fedora Extras Quality Assurance
: FutureFeature
Depends On:
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Reported: 2013-09-13 10:05 EDT by Najmuddin Chirammal
Modified: 2018-02-21 09:14 EST (History)
2 users (show)

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Doc Type: Enhancement
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Last Closed: 2018-02-21 09:14:17 EST
Type: Bug
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Description Najmuddin Chirammal 2013-09-13 10:05:49 EDT
Description of problem: 

Currently pam_cracklib/pam_pwquality does not have an option to specify the "minimum number of character in each class". We can specify the number of characters required for each class (by using -weight) however this is not sufficient in some situations, for example:


Minimum length: 12
Minimum number of classes: 3
Minimum number of character in each class: 2

Cracklib/pwquality attempt is below:

password required pam_cracklib.so try_first_pass minclass=3 difok=4 retry=3 minlen=12 lcredit=-2 ucredit=-2 dcredit=-2 ocredit=-2

However, since -2 is specified for each class, pam is enforcing 4 classes. We cannot specify, the password only require 3 classes, but at least 2 characters for each class.
Comment 2 Tomas Mraz 2018-02-21 09:14:17 EST
I do not think further complicating the possible options is a way to go. However if there is a real interest for this feature, feel free to submit a pull request with such implementation to the upstream on GitHub.

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