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Questions tagged [yubikey]

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0 votes
1 answer
4k views

Why YubiKey (USB key) needs administrator rights (or any other device)

Some time after a clean install of Windows 10 or 11 and using Yubico keys (USB keys), they need administrator rights to programs to detect it. It happens randomly, or I don't remember / can't imagine ...
user348246's user avatar
1 vote
1 answer
824 views

GPG periodically loses connection to yubikey on monterey

The connection between gpg and my yubikey appears to periodically fail. Decryption attempts are met with the pinentry-mac dialog "please insert card with serial number X". gpg --card-status -...
user avatar
1 vote
0 answers
782 views

Error when register Yubikey Bio with website

I am having an issue registering a yubikey bio with a website. I have managed to register a Yubikey 5 series with the website without issue however when I try with the Yubikey bio I get an error like ...
John554's user avatar
  • 183
1 vote
1 answer
493 views

What is the cryptographic relationship between an ssh key and my Yubikey?

I am curious what is the cryptographic relationship between the generated ssh private (and public) key when I use my Yubikey to add an extra layer of protection. Does ssh-keygen write anything into ...
Halacs's user avatar
  • 132
4 votes
2 answers
5k views

How to disable OpenSC YubiKey password prompt in Firefox

I have a YubiKey nano plugged into a 2019 MacBook Pro. When I visit some websites (one public example being Gmail), Firefox brings up a password dialog prompting me to enter the YubiKey password. ...
Jay Taylor's user avatar
1 vote
0 answers
406 views

Best strategy after losing GPG/PGP key passphrase (but still access to YubiKey)

When I got my first YubiKey several years ago, I created a new GPG key specifically for it. After uploading the private key to the YubiKey (keytocard), I also stored an armored copy of the private key ...
nisc's user avatar
  • 1,112
0 votes
1 answer
2k views

SSH Using YubiKey 5 and ED25519 Algorithm

I am starting to use a YubiKey 5 to ssh into remote boxes instead of using a software key. I am generating the keys using this command: ssh-keygen -t ed25519-sk This works when I ssh into Ubuntu, but ...
Dan Largo's user avatar
  • 103
2 votes
2 answers
2k views

YubiKey 5C is not recognized via a docking station

I have a new YubiKey 5C NFC which, when plugged directly in my laptop, works fine. However, when I plug it into my docking station it doesn't work at all. OS: Linux Mint 20.1 Kernel: 5.4.0-77-generic ...
wasp256's user avatar
  • 103
0 votes
0 answers
74 views

Are there solutions to boot to a hidden OS only when special usb key is present?

My laptop was stolen recently. Unfortunately I did not take the time to install a honeypot on it. With my new laptop I am thinking about installing a honeypot OS and a hidden OS that I will use for my ...
adam_sasiadek's user avatar
2 votes
0 answers
371 views

ssh-add -s Win10

I am unable to add my card using ssh-add -s on Windows 10, ssh-agent is running. Getting below error: C:\Program Files\Yubico\Yubico PIV Tool\bin>ssh-add -s libykcs11.dll Enter passphrase for PKCS#...
gy082517's user avatar
2 votes
0 answers
2k views

Bitlocker Full Drive Encryption with YubiKey

I'd like to secure the hard discs of a new Windows 10 (Pro/Enterprise) PC with BitLocker full disc encryptuon using hardware tokens and PIN (real 2FA). How can I set up a YubiKey so I can use it as ...
Sam's user avatar
  • 2,124
1 vote
1 answer
4k views

gpg: decryption failed: No secret key

First, I spent an hour trying answers with similar titles so please read this through before flagging this question as a duplicate. I use a YubiKey to store my PGP private key using its smart card ...
sunknudsen's user avatar
  • 1,010
0 votes
1 answer
460 views

Mac GPG can't generate smartcard keys

Mac OS X Catalina 10.15.7, Homebrew GPG 2.2.23, brand new Yubikey 5C Nano, homebrew pinentry-mac 0.9.4 % gpg --card-edit Reader ...........: Yubico YubiKey OTP FIDO CCID Application ID ...: ...
AstraLuma's user avatar
  • 101
3 votes
1 answer
4k views

SSH server asking for password, but PasswordAuthentication is disabled

what you will see is the current state of a problem I am trying to solve. I restarted sshd before filling the body this question. What I am trying to do: I need to use ssh keys with a yubikey ...
ungeblauscht's user avatar
2 votes
0 answers
1k views

Why can't I add an elliptic curve certificate (smartcard, Yubikey, piv) as protector to a BitLocker protected partition?

Yubikey as SmartCard I have been using a SmartCard (Yubikey 4, PIV interface) with RSA certificate to unlock BitLocker protected drives. The certificates are self-signed and generated by the Encrypted ...
A71's user avatar
  • 552

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