Questions tagged [yubikey]
The yubikey tag has no usage guidance.
42
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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 ...
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Access YubiKey when using a remote desktop with tools such as OpenText Exceed TurboX?
This blog post describes how one could retrieve an SSH key stored within a YubiKey device (physically connected to machine A) within a machine B, when there is an ssh session from A to B.
So assuming, ...
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How can I use a U2F hardware authenticator to unlock a SSH key in a computer I am SSH'd into?
I have a number of computers on which I've generated a ed25519-sk SSH key all using the same U2F hardware authenticator (yubikey 5C NFC). I'm now in a situation involving three computers: X, Y, and Z. ...
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SSH keys derived from GPG keys on YubiKey seem incorrect
I have a yubikey with ED25519 certificates on it.
The keygrip of the authentication key is 7AE7F1D55730AEA2A0C4276C345E197B0EFA093A
When I run gpg --export-ssh-key {key_name} it returns ssh-ed25519 ...
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2
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648
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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 ...
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YubiKey changed identity
I unplugged my YubiKey und plugged it in a while later. When I try to login on websites using the hardware key I now get a popup from Chrome stating "the security key doesn't look familiar".
...
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Can a website detect if the same physical FIDO key is used for multiple accounts?
If I have an account, say with google, and only use that account from location A, using device A, and another google account only used with device B in location B, if I used the same 2fa FIDO key for ...
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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 ...
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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 -...
rueberger
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550
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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 ...
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253
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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 ...
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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. ...
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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 ...
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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 ...
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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 ...
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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 ...
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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#...
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2k
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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 ...
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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 ...
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408
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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 ...: ...
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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 ...
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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 ...
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402
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Preventing Win 10 from automatically installing certificates from smart cards
A short background on the issue. I have a Yubikey 5 with PIV containing 3 personal certificates. One of the certificates is also installed locally on my Win 10 machine. All the certificates contain ...
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Yubikey with Kleopatra on Windows 10
I have a Yubikey 4C Nano that I use with Linux and MacOS without issue. Recently, I installed a version of Windows on my macbook pro that allows me to dual-boot (so I can run the windows version of ...
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107
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Strong encryption for a local file (PGP)
Just a quick disclaimer: I initially posted this question to Crypto site but was told it was too specific for that site.
I am looking for a safe method to encrypt a local file on my machine. Let's ...
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802
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yubikey/gpg-agent always asking for my PIN when running git commit
recently, git has been asking me for my yubikey pin every 3 or 4 times after i've already typed in my pin. this didn't use to happen before. i'm thinking maybe the card isn't getting read correctly or ...
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Yubikey FIPS Approved Mode
I'm having issues getting my Yubikey FIPS version to unlock and exit the FIPS approved mode.
You can see below that I first put the yubikey into fips mode by setting an admin pin. Then, I ...
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Is it possible to use macOS 'Keychain' + 'TouchID' for pinentry-program?
Is there some way of configuring pinentry-mac, which I currently use to enter the passphrase for my OpenPGP card (a Yubikey), or a different program that'll store the passphrase in the macOS 'Keychain'...
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Using ssh key on Yubikey on Sourcetree program
I can not make sourcetree work with the ssh key that i have in my yubikey.
Does anybody know how can i fix it?
Thank you.
P.D: I have tried different recommendations that i found on the internet, ...
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make .ssh/id_rsa read key from yubikey
I have my ssh keys within a yubikey, I use gpg-agent.conf with something like this:
pinentry-program /usr/local/bin/pinentry-mac
enable-ssh-support
default-cache-ttl 60
max-cache-ttl 120
This helps ...
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339
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How do I get Windows applications to recognize my YubiKey?
I have successfully used my YubiKey to get my Chrome and Firefox browsers to get my 2-step verification to work with my Google account.
Unfortunately, I have a few Windows applications which I cannot ...
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551
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Programmatically unlock PIV slot 9a with OpenSC for another application
I'm using a Yubikey 4 with a certificate loaded in PIV slot 9a (PIV Authentication; OpenSC slot 0).
Inside Firefox 64, I am using the OpenSC PKCS#11 driver.
What I want to accomplish is to "unlock" ...
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2k
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Sharing Yubikey between host and VMWare
I have a Yubikey 4 working on my Win10 host machine, but also want to use in my VMWare Workstation 12 Win7 session.
At first, connecting to the shared Yubico device failed, because Windows could not ...
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593
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Signing a message with a SmartCard / Yubikey
So I've gone through a pretty bog-standard GPG-key-setup process, and then used addtokey to move said keys onto a Yubikey 4.
Now, on a fresh setup, I want to try and use those keys, to sign something....
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How to use PIV smartcards (YubiKey 4) to sign application binaries?
I am about to start using my YubiKey 4 (RSA 2048 bit key) for signing application binaries. There a quite a few tutorials about how to setup this. It seems that most tutorials based on the original ...
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Scdaemon won't detect Yubikey on Windows 10
This has recently started after I updated to Windows 10 1803 (x64). I have updated Gpg4Win to the latest version (3.1.2), but this has not fixed anything.
I have tried the following:
Remove the ...
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1
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1k
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Which pam module is used for gnome admin password requests?
I have added the yubikey pam module to my sudo pam config, and I like the results—no one can get superuser access through sudo or su without a yubikey.
Setting aside the fact that this is possibly ...
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GPG should fail silently when external card is not inserted, instead of asking over and over
I'm running Linux.
I have a Yubikey 4, where my GPG subkeys are stored. On the computer, gpg-agent transparently uses these keys.
The problem is when I don't have my Yubikey inserted. If anything ...
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What security key specification is needed for WebAuthN compatibility?
Is it already possible to buy a buy a USB-pendrive-style authentication key that is compatible with WebAuthN?
If yes, what technical standard/specification should it support?
According to press ...
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Yubikey 4 not working (Linux & Windows)
I received a Yubikey 4 a few days ago. I got it along a special WIRED Magazine offer. The problem with the key is, that it is not recognized neither by Windows 10, nor by Linux (Mint 18).
Linux
When ...
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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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Unable to get yubikey neo u2f working in Linux inside of VMWare Workstation
I am unable to get my YubiKey Neo U2F working in VMWare Workstation Pro 12.5. Testing it against Yubico's test site or against Akisec's test site both fail in the guest operating system (running ...
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