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 Post subject: Yubikey Resetting code
PostPosted: Mon Jan 29, 2018 1:13 pm 
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Joined: Mon Jan 29, 2018 1:09 pm
Posts: 1
So I have read that you can configure a Resetting Code for the OpenPGP applet which can be used to reset the pin.
The command to be used is supposed to be: RESET RETRY COUNTER but I've not found any information on how to send the command.
Are there any utilities to use the Resetting Code for the yubikey, or how is it supposed to work?


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PostPosted: Tue Jan 30, 2018 9:10 am 
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Yubico Team
Yubico Team

Joined: Thu Oct 16, 2014 3:44 pm
Posts: 349
viewtopic.php?f=26&t=2147

Reset Code is set with:

gpg --card-edit
admin
passwd
4
[follow prompts from here - you just need to know the Admin PIN at this point, which is 12345678 if you haven't changed it from the default]

For a description of the Reset Code, please see the specifications that the OpenPGP applet is based off of (http://www.g10code.com/docs/openpgp-card-2.0.pdf), in particular page 15. The reset code (or "resetting code" as it's referred to in the documentation) is kind of like the Admin PIN, except the ONLY function it provides is to allow you to reset your PIN if you've locked it out. It can't be used for actually editing the card. It's intended for admins (who know the Admin PIN) to prepare the card for their user, and by providing both the PIN and the Reset Code, it gives the user control over the PIN (and the ability to reset it). If it's for personal / single-user use, the Reset Code isn't really necessary (and that's why there isn't one by default on the YubiKey).


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