Considering the Management Key must be entered when configuring your YubiKey for macOS account login, this option is highly recommended. When prompted for the Management Key in the future, the PIN can be provided in place of entering a 48 character Management Key.

Protect with PIN: Choose this option if you prefer the Management Key to be encrypted using the PIN.

New Management Key: Enter a new 48 character Management Key, or choose Generate to create a randomized Management Key.

Current Management Key: Assuming the default Management Key has not been changed, enter the default Management Key of 010203040506070801020304050607080102030405060708 or simply click Use default.

On the Configure PINs screen, click Change Management Key.

Confirm new PUK: Confirm the PUK entered in the previous field.

New PUK: Use a 6-8 digit number for your new PUK and note it for future reference.Current PUK: Assuming the default PUK has not been changed, enter the default PUK of 12345678 or simply click Use default.On the Configure PINs screen, click Change PUK.Confirm new PIN: Confirm the PIN entered in the previous field.macOS does not accept non-numeric characters. Do not use letters or other characters in your PIN when configuring for macOS login. New PIN: Use a 6-8 digit number for your new PIN and note it for future reference.Current PIN: Assuming the default PIN has not been changed, enter the default PIN of 123456 or simply click Use default.

In YubiKey Manager, click Applications > PIV.

If you have forgotten your PIN and need to reset the PIV application to default, refer to this article.

PIN: 123456 (6-8 characters allowed, macOS requires numeric-only).

Note: The default settings on the YubiKey PIV application are as follows: Personalizing the YubiKey PIV application

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