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Encrypted is obsolete

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DNNDude

Growing Member

Posts: 47

9/3/2019 9:41 PM

Thanks Sebastian.

Sounds like there is scope there for a utility to convert all encrypted password into a hash. If DNN already checks both, seems like a logical thing to do when DNN detects a change in the web.config from encrypted>hashed.

This would improve the security of the platform I reckon. Does anyone know if such a thing exists, or perhaps a 3rd-party tool?

Sebastian Leupold

Veteran Member

Posts: 546

MVP

9/6/2019 3:23 AM

AFAIR DNN Corp. wrote such a Utility to migrate their own website years ago, but it was not ready to be released for the public. The easiest Workaround would be a SQL script, which sets the flag for requiring Password reset for all users upon next login.

Brian Dukes

Advanced Member

Posts: 159

MVP

9/6/2019 9:59 AM

I'm not aware of any freely available mechanism to do this. Unfortunately, I don't think Sebastian's easy workaround will be effective. As far as I recall, once a password is marked as encrypted, it continues to be encrypted even if the setting is changed. Only new accounts get hashed passwords once the main setting is changed to encrypted. There will need to be some process running on the web server to decrypt each password and update them to the hashed format.

Sebastian Leupold

Veteran Member

Posts: 546

MVP

9/6/2019 11:43 AM

Of course, the password remains encrypted, until the user updates it. If DNN password format is set to "hashed", the new password would be stored as hashed value.

Michael Tobisch

Veteran Member

Posts: 1182

MVP

7/10/2020 4:34 AM

Posted By Sebastian Leupold on 06 Sep 2019 11:43 AM
Of course, the password remains encrypted, until the user updates it. If DNN password format is set to "hashed", the new password would be stored as hashed value.

I could not reproduce this. I tried to change the password for a user who had PasswordFormat=2 in the aspnet_membership table, and after the change, it still was 2. I created a new user, and the password format is 1 for this user. So changing the password does not "upgrade" the password format.

Happy DNNing!
Michael

Sebastian Leupold

Veteran Member

Posts: 546

MVP

7/10/2020 4:58 AM

Maikl,
when updating the password, DNN uses the format value from web.config, not the current membership entry.

Michael Tobisch

Veteran Member

Posts: 1182

MVP

7/13/2020 2:44 AM

Sebastian,

I could not reproduce that. The password is still encrypted and not hashed after changing it (the value of the field PasswordFormat is still 2). Only new users get the PasswordFormat 1 (hashed).

Happy DNNing!
Michael

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