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Questions tagged [yubikey]

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0 votes
0 answers
38 views

Login to Windows using the Yubico Security Key C NFC [closed]

Is there a way to use the Security Key C NFC (not to confuse with other yubico keys) to login on windows? Yubico states that it is not possible. My many onlineservices are compatible with my key and ...
0 votes
0 answers
61 views

Windows YubiKey GPG works with putty but not terminal

I created three gpg subkeys stored on my YubiKey as described here. I added enable-ssh-support and enable-putty-support to my gpg-agent.conf file. Everything works when accessing a server with the ssh-...
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2 votes
1 answer
66 views

Windows 11 2FA prompt opens a console instead of a GUI window

Some time ago, I started using FIDO2 keys (Yubikey 5 NFC, to be precise) as a form of second-factor authentication on a few sites that support it. However, after some change in my system, most likely ...
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 ...
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 ...
0 votes
0 answers
37 views

Cannot setup pam_oath with Yubikey: OTP not authorized to login as user

So, what I want is to login to system with Yubikey as a second factor or the only factor. I use Linux Mint 21.3, my Yubikey is 5C NFC. My /etc/pam.d/common-auth: auth [success=1 default=ignore] ...
18 votes
3 answers
4k views

Set Default Security Key Settings (Windows 11)

As of the latest Windows Insider Build (Dev Channel), 23541.1000 ni_prerelease, the following appears when Windows is prompted for security key input: Whereas before this update, it was only Security ...
1 vote
1 answer
60 views

store onion address inside yubikey

I would like to be able to save an onion (v3) address, without the final string .onion inside a yubikey safely. I want the yubikey that provide this address in plain text at the touch event. I have ...
3 votes
2 answers
3k views

Yubikey ssh authentication fails with "signing failed for ECDSA-SK"

I have a Yubikey (Security Key NFC by Yubico) that I'm trying to set up on a Linux machine for SSH authentication in Discoverable keys mode. I've followed this tutorial and created the keys with ssh-...
1 vote
0 answers
71 views

YubiKey Authenticator App doesn't recognize YubiKey after unlocking the card via PinEntry

I've got a pretty basic password/OTP set up on macOS: my YubiKey has the sig/aut/enc subkeys to encrypt/decrypt my passwords in the password store my OTPs are solely on my YubiKey - I use the Yubikey ...
0 votes
0 answers
98 views

No passkey icon option on Windows 10

I am trying to enable passkey login on Windows 10 devices. I have enabled UseSecurityKeyForSignin and EnableFIDODeviceLogon as well as enabled WHfB in gpedit.msc According to RSOP, passkey login is ...
1 vote
1 answer
747 views

How does the Key generation for Yubikeys/FIDO2 keys work if you can generate an infinitive amount

I'm asking myself how they have done it, or if anyone could explain it to me. I have found this source where it is described, but I don't quiet get it. For my understanding, it is not storing the ...
1 vote
2 answers
3k views

Unable to use Windows OpenSSH agent with GPG Agent and Yubikey

I have a Yubikey which has ed25519 certificates loaded onto it. One of these is an authentication certificate. I'm able to export the sha has of this by running gpg --export-ssh-key {key_id}, and ...
0 votes
1 answer
3k views

YubiKey not working (device not found) in WSL while it works perfect under Windows directly

I use Yubikey to connect to multiple servers. I am doing this under windows and this works perfectly fine with my sshconfig in the .ssh directory. Now I have a case where I need to run some things ...
6 votes
2 answers
20k views

How to setup SSH/PuTTY to use Yubikey OpenPGP authentication?

I would like to use YubiKey's OpenPGP interface to authenticate myself against my OpenSSH server on Windows 10: I created the keys according to this: gpg --card-status Reader ...........: Yubico ...

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