The Yubikey Manager is a CLI tool for mainly managing your PIV = Personal Identity Verification storage, where you can store certificates and private keys. Indestructible. Since it's a PAM module, probably yes. Select Challenge-response and click Next. PAM is used by GNU/Linux, Solaris and Mac OS X for user authentication, and by other specialized applications such as NCSA MyProxy. Step 3 – Installing YubiKey Manager. ) you will need to compile a kernel with the correct drivers, I think. Product documentation. When building on Windows and mac you will need a binary build of yubikey-personalization , the contents should then be places in libs/win32, libs/win64 and libs/macx respectively. Open a second Terminal, and in it, run the following commands. For registering and using your YubiKey with your online accounts, please see our Getting Started page. g. YubiKeys support multiple authentication protocols so you are able to use them across any tech stack, legacy or modern. Unable to use the Yubikey as method to connect to remote hosts via SSH. d/sudo; Add the following line above the “auth include system-auth” line. 3. I have created SSH key on Yubikey 5 Nano using FIDO2: ssh-keygen -t ed25519-sk -f ~/. user@val:~$ cd yubikey-val user@val:~/yubikey-val$ sudo make install Depending on your distribution, the group of Apache (or the HTTP server) might be different from used in Debian and Ubuntu. If sudo add-apt-repository ppa:yubico/stable fails to fetch the signing key, you can add it manually by running sudo apt-key adv --keyserver keyserver. Login as a normal non-root user. | Włóż do slotu USB pierwszy klucz Yubikey i uruchom poniższe komendy. I'm wondering if I can use my Yubikey 4 to authenticate when using sudo on Linux instead of typing my password. The protocol was initially developed by Yubico, Google and NXP and is nowadays hosted as an open-standard by the FIDO. yubioath-desktop/focal 5. The lib distributed by Yubi works just fine as described in the outdated article. so Test sudo. and I am. It may prompt for the auxiliary file the first time. d/sudo Underneath the line: @include common-auth Add: auth required pam_u2f. ssh/id_ed25519-sk The Yubikey has user and admin PIN set. Local Authentication Using Challenge Response. The response should be similar to this: $ opensc-tool --list-readers # Detected readers (pcsc) Nr. After upgrading from Ubuntu 20. A YubiKey have two slots (Short Touch and Long Touch), which may both be configured for different functionality. d/sshd. Just a quick guide how to get a Yubikey working on Arch Linux. if you want to require ONLY the yubikey to unlock your screen: open the file back up with your text editor. This allows apps started from outside your terminal — like the GUI Git client, Fork. Do note that you don't have to run the config tool distributed with the package, nor do you need to update pam as in Ubuntu. What is a YubiKey. I have verified that I have u2f-host installed and the appropriate udev. " appears. Open Terminal. noarch. Starting with Chrome version 39, you will be able to use the YubiKey NEO or YubiKey NEO-n in U2F+HID mode. Unlock your master key. Access your YubiKey in WSL2. The YubiKey U2F is only a U2F device, i. Log into the remote host, you should have the pinentry dialog asking for the YubiKey pin. Step 3 – Installing YubiKey Manager. Add the line below above the account required pam_opendirectory. a device that is able to generate a origin specific public/private key pair and returns a key handle and a public key to the caller. so authfile=/etc/u2f_keys Open a new terminal window, and run sudo echo test. Require the Yubikey for initial system login, and screen unlocking. echo ' KERNEL=="hidraw*", SUBSYSTEM. " Now the moment of truth: the actual inserting of the key. yubikey_sudo_chal_rsp. pkcs11-tool --login --test. :. The Yubikey is detected on the Yubikey manager and works for other apps so the problem seems to be isolated to not being detected on KeepassXC. Done! You can now double-click the shortcut and start using your YubiKey for SSH public key authentication. YubiKeyManager(ykman)CLIandGUIGuide 2. 68. myprompt {~}$ ansible all -i hosts --sudo --ask-sudo-pass -m shell -a "/usr/bin/whoami" -vvv -f 10 -t log/ Using /Users/me/. 0. Retrieve the public key id: > gpg --list-public-keys. Then enter a new Yubikey challenge passphrase, twice, then finally you will need to enter the backup passphrase one last time. Install the OpenSC Agent. 04LTS to Ubuntu 22. Buy a YubiKey. This commit will create a 'authlogin_yubikey' boolean, that can be used to allow or disallow sshd_t (and several other types, like login_t) to name_connect to Big thanks to Dan Walsh. In past, there was a package libpam-ssh-agent-auth, but it's no longer maintained and it's not working now. I've got a 5C Nano (firmware 5. list and may need additional packages:Open Yubico Authenticator for Desktop and plug in your YubiKey. Login as a normal non-root user. Click the "Scan Code" button. Setup Yubikey for Sudo# Now that we have our keys stored, we are ready to setup the Yubikey to be used for running sudo commands. This section covers how to require the YubiKey when using the sudo command, which should be done as a test so that you do not lock yourself out of your. This project leverages a YubiKey HMAC-SHA1 Challenge-Response mode for creating strong LUKS encrypted volume passphrases. sudo add-apt-repository ppa:yubico/stable && sudo apt-get update sudo apt-get install yubikey-manager-qt scdaemon gnupg2 curl. Generate an API key from Yubico. pamu2fcfg > ~/. 3. YubiKeys implement the PIV specification for managing smart card certificates. How the YubiKey works. g. Related: shavee, shavee, shavee_core See also: sudo-rs, pamsm, pam, bitwarden-api-api, pam-bindings, bitwarden, yubihsm, shock, ybaas, number-theory Lib. Install Yubikey Manager. d/sudo no user can sudo at all. addcardkey to generate a new key on the Yubikey Neo. Run: pamu2fcfg >> ~/. So it seems like it may be possible to leverage U2F for things like sudo, lock screen, su and maybe authorization prompts. I would like to login and sudo using a Yubikey. If you have several Yubikey tokens for one user, add YubiKey token ID of the other devices separated with :, e. E. This guide assumes a YubiKey that has its PIV application pre-provisioned with one or more private keys and corresponding certificates, etc. sudo apt install. save. config/Yubico/u2f_keys sudo nano /etc/pam. write and quit the file. Based on this example, you will be able to make similar settings in systems similar to Ubuntu. Click Applications, then OTP. Step by step: 1. I would suggest one of three approaches: Recommended: make a group of users who can use sudo without a password: %wheel ALL = (ALL) NOPASSWD: ALL. System Properties -> Advanced -> Environment Variables -> System variables. Reboot you’re machine and it will prompt you for your YubiKey and allow you to unlock your LUKS encrypted root patition with it. “The YubiKey is a hardware authentication device manufactured by Yubico to protect access to computers, networks, and online services that supports one-time passwords (OTP), public-key cryptography, and authentication, and the Universal 2nd Factor (U2F) and FIDO2 protocols [1] developed by the FIDO Alliance. The YubiKey 5Ci with Lightning connector and USB-C connector is priced at $75. This document assumes that the reader has advanced knowledge and experience in Linux system administration, particularly for how PAM authentication mechanism is configured on a Linux platform. YubiKey. 0-0-dev. With a basic pubkey setup, compromise of the host is by far the biggest risk, even if the key. “The YubiKey is a hardware authentication device manufactured by Yubico to protect access to computers, networks, and online services that supports one-time passwords (OTP), public-key cryptography, and authentication, and the Universal 2nd Factor (U2F) and FIDO2 protocols [1] developed by the FIDO Alliance. 1p1 by running ssh . 5-linux. pkcs11-tool --login --test. I've tried using pam_yubico instead and. Therefore I decided to write down a complete guide to the setup (up to date in 2021). age-plugin-yubikey only officially supports the following YubiKey variants, set up either via the text interface or the --generate flag: YubiKey 4 series. And reload the SSH daemon (e. Install the smart card daemon with: sudo yum install gnupg2-smime Ensure that the following files exist with the given contents: ~/. I'll reproduce it here: WARNING: forwarding Pageant and GPG from Windows to WSL2 means that ANYONE who can SSH into your account in WSL2 can access your GPG key. The python library yubikey-manager is needed to communicate with the YubiKey, and may be installed from pip or other package managers. pam_u2f. So I edited my /etc/pam. 0 answers. Run: pamu2fcfg > ~/. so line. $ sudo apt update $ sudo apt -y upgrade $ sudo apt -y install wget gnupg2 gnupg-agent dirmngr cryptsetup scdaemon pcscd secure-delete hopenpgp-tools yubikey-personalization Note As of 2023 June, the hopenpgp-tools is not part of. Yubikey challenge-response mode for SUDO; FIDO U2F authentication; Yubikey for SSH authentication; Prerequisites. so is: It allows you to sudo via TouchID. Once YubiKey Manager has been downloaded, you can configure a static password using the following steps: Open YubiKey Manager. Is there any possible problems with this setup? I can think of one small issue: Granting cPanel support access to the servers. Simply copy file to /usr/local/bin directory or your ~/bin/ using the cp command. Refer to the third party provider for installation instructions. A note: Secretive. 0) and macOS Sonoma (14. sudo apt update sudo apt install net-tools openssh-server libpam-u2f libyubikey-udev git -y Step 4 : Z4yx develops a PAM-RSSH package for passwordless SSH login with a Yubikey. Open the terminal and enter the following commands to update your packages and install YubiKey Authenticator and YubiKey Manager: sudo add-apt-repository. Insert your first Yubikey into a USB slot and run commands as below. com to learn more about the YubiKey and. YubiKey is a Hardware Authentication. This applies to: Pre-built packages from platform package managers. Defaults to false, Challenge Response Authentication Methods not enabled. If you have a QR code, make sure the QR code is visible on the screen and select the Scan QR Code button. The correct equivalent is /etc/pam. In addition, we have to make the file executable: sudo chmod +x /usr/local/bin/yubikey. 6. This is especially true for Yubikey Nano, which is impossible to remove without touching it and triggering the OTP. 2. You can obtain the ID by opening a text editor and touching the button on the YubiKey, and selecting only the first 12. To get GPG and to use your Yubikey as your SSH key in WSL2 you'll need to follow the wsl2-ssh-pageant guide. It’s quite easy, just run: # WSL2. fan of having to go find her keys all the time, but she does it. So thanks to all involved for. 1. Log in or sign up to leave a comment. Run sudo modprobe vhci-hcd to load the necessary drivers. gpg --edit-key key-id. d/sudo file by commenting out @include common-auth and added this line auth required pam_u2f. I've tried using pam_yubico instead and sadly it didn't. sudo . To configure the YubiKeys, you will need the YubiKey Manager software. The YubiKey 5 Series supports most modern and legacy authentication standards. Programming the NDEF feature of the YubiKey NEO. Open KeePass2Droid, select “Password+Challenge-Response”, enter your master password and hit “Load OTP Auxiliary file…” which should open YubiChallenge. Save your file, and then reboot your system. sudo systemctl enable --now pcscd. Enable “Weekday” and “Date” in “Top Bar”. pkcs11-tool --login --test. Open the YubiKey Manager on your chosen Linux Distro. Lastly, configure the type of auth that the Yubikey will be. Populate this file with the usernames for which you want to enable two-factor authentication and their YubiKey IDs. 3 kB 00:00 8 - x86_64 13 kB/s | 9. But if i unlock the device after boot in a terminal it works fine (I have to enter the PIN and then touch the Yubikey): $ sudo systemctl start systemd-cryptsetup@luksx2df9310a75x2d5eadx2d43d8x2d8d55x2d0b33ba5e2935. pam_u2f. rules file. ( Wikipedia)Yubikey remote sudo authentication. The PAM module can utilize the HMAC-SHA1 Challenge-Response mode found in YubiKeys starting with version 2. Here's another angle. Install GnuPG + YubiKey Tools sudo apt update sudo apt -y upgrade sudo apt -y install wget gnupg2 gnupg-agent dirmngr cryptsetup scdaemon pcscd secure-delete hopenpgp-tools yubikey-personalization Check GPG installation with your YubiKey. Log back into Windows, open a WSL console and enter ssh-add -l - you should see nothing. Like other inexpensive U2F devices, the private keys are not stored, instead they are symmetrically encrypted (with an internal key) and returned as the key handle. nix-shell -p. sudo wg-quick up wg0 And the wg1 interface like this: sudo wg-quick up wg1 If your gpg-agent doesn't have the PGP key for your password store in its cache, when you start one of those interfaces, you'll be prompted for the PGP key's passphrase -- or if you've moved the PGP key to a YubiKey, you'll be prompted to touch your YubiKey. pkcs11-tool --list-slots. 7 Form factor: Keychain (USB-A) Enabled USB interfaces: OTP+FIDO+CCID NFC. a device that is able to generate a origin specific public/private key pair and returns a key handle and a public key to the caller. In the password prompt, enter the password for the user account listed in the User Name field and click Pair. Set to true, to grant sudo privileges with Yubico Challenge Response authentication. Now I have a case where I need to run some things under linux and connect to the same servers also using the YubiKey. I've been using the instructions on Yubico's site, but now on Pop_OS! something is different. share. sudo add-apt-repository ppa:yubico/stable && sudo apt-get update Just download and run the official AppImage. h C library. g. Hi, First of all I am very fascinated of the project it awesome and gives the WSL one of the most missing capabilities. Now that we can sign messages using the GPG key stored in our YubiKey, usage with GIT becomes trivial: git config --global user. -DYKCS11_DBG=2 make sudo make install It is also possible to use PKCS#11 Spy, as provided by OpenSC,. Step 2: Generating PGP Keys. For ykman version 3. An existing installation of an Ubuntu 18. Consider setting up a YubiKey on an Ubuntu system using the HMAC-SHA1 challenge-response function. sudo pcsc_scanThere is actually a better way to approach this. if you want to require ONLY the yubikey to unlock your screen: open the file back up with your text editor. sudo ykman otp static --generate 2 --length 38. Use Cases. Go offline. In the post Yubikey is not recognized right after boot , a method to force the detection of the YubiKey was to enter the command: sudo udevadm trigger. Open a second Terminal, and in it, run the following commands. pamu2fcfg > ~/. 1-Bit Blog How to use Yubikey with WSL2 via USB passthrough (or how I compiled my first custom Linux kernel) October 07, 2022. so Now the file looks like this: Now when I run sudo I simply have to tap my Yubikey to authenticateAn anonymous reader writes: Folks at HexView (disclaimer: I contract for the company) took apart Yubikey Neo and found out that, while the key uses solid hardware to ensure secure identity management, its physical anti-tamper measures and durability could be improved. As for the one-time password retrieved from the yubikey server, I'm pretty sure there is a pam module for it, which would be a start. AppImage / usr / local / bin / ## OR ## mkdir -p ~ / bin / && cp -v yubikey-manager-qt-1. Managing secrets in WSL with Yubikey. 4. . If you don’t have your YubiKey, it will give the following prompt: Security token not present for unlocking volume root (nvme0n1p3_crypt), please plug it in. The Yubico libsk-libfido2. e. Make sure that gnupg, pcscd and scdaemon are installed. Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly. I've recently setup sudo to require the press of my YubiKey as 2FA via pam_u2f. Setting up the Yubico Authenticator desktop app is easy. Answered by dorssel on Nov 30, 2021. If you have a Yubikey, the initial configuration process is as follows: Install the ykman program and any necessary utilities. If you need to troubleshoot this set-up, first plug in the YubiKey and use opensc-tool --list-readers to verify that the OpenSC layer sees the YubiKey. list and may need additional packages: I install Sound Input & Output Device Chooser using Firefox. Create an authorization mapping file for your user. pls find the enclosed screenshot. From within WSL2. That service was needed and without it ykman list was outputting:. After you do this then only someone with both the password and the Yubikey will be able to use the SSH key pair. In my case I have a file /etc/sudoers. U2F has been successfully deployed by large scale services, including Facebook, Gmail, Dropbox,. Lock your Mac when pulling off the Yubikey. Readme License. Download ykman installers from: YubiKey Manager Releases. YubiKey Manager can be installed independently of platform by using pip (or equivalent): pip install --user yubikey-manager. Open the sudo config file for PAM in an editor: sudo nano /etc/pam. Configure USB. d/sudo contains auth sufficient pam_u2f. con, in particular I modified the following options. Choose one of the slots to configure. Reloading udev with sudo udevadm trigger or even restarting the Windows (host) computer doesn't result in working : (. service 🔐 Please enter security token PIN: Sep 30 18:02:34 viki systemd [1]: Starting. , sudo service sshd reload). x (Ubuntu 19. I've tried using pam_yubico instead and sadly it didn't. sudo apt-add-repository ppa:yubico/stable. Install Packages. The above PAM control value sufficient allows your YubiKey to act as an optional primary factor for sudo authentication. This is working properly under Ansible 1. Securing SSH with the YubiKey. At home, this is easy - my PC dual-boots into an Ubuntu environment I use for writing code. In the wrong hands, the root-level access that sudo provides can allow malicious users to exploit or destroy a system. comment out the line so that it looks like: #auth include system-auth. pam_user:cccccchvjdse. Disconnected it and then mounted sdcard in different device and found /var/log/syslog consumed disk space with vino-server messages. It simplifies and improves 2FA. This will generate a random otp of length 38 inside slot 2 (long touch)! 3 posts • Page 1 of 1. Each user creates a ‘. Note. For me I installed everything I needed from the CLI in arch as follows: sudo pacman -S gnupg pinentry libusb-compat pcsclite. service` 3. You can upload this key to any server you wish to SSH into. config/yubico/u2f_keys. Underneath the line: @include common-auth. Ensure that you are running Google Chrome version 38 or later. Enter the PIN. 5. In the right hands, it provides an impressive level of access that is sufficient to get most jobs done. so no_passcode. What I want is to be able to touch a Yubikey instead of typing in my password. If you're looking for setup instructions for your. When I need sudo privilege, the tap does not do nothing. Would it be a bad idea to only rely on the Yubikey for sudo? Thanks. Solutions. yubikey webauthn fido2 libfido2 Resources. Our customers include 9 of the top 10 internet companies, 3 of the 5 leading financial and retail companies, and several of the largest. The tear-down analysis is short, but to the point, and offers some very nice. e. enter your PIN if one if set for the key, then touch the key when the key's light blinks. As someone who tends to be fairly paranoid when it comes to online security, I like the idea of using a hardware-based authentication device to store keys safely for things like code signing and SSH access. sudo apt update sudo apt upgrade. The only method for now is using sudoers with NOPASSWD but in my point of view, it's not perfect. 04-based distro with full-disk encryption; A 2-pack of Yubikeys (version 5 NFC), if you only have one Yubikey you can skip the steps for the second key. This guide assumes a YubiKey that has its PIV application pre-provisioned with one or more private keys and corresponding certificates,. Programming the YubiKey in "Static Password" mode. Enable the udev rules to access the Yubikey as a user. By using KeepassXC 2. I wanted to be asked for JUST the Yubikey when I sudo so I changed the /etc/pam. Sudo with yubikey enabled hangs indefinitely and the processes dont respond to kills. I also installed the pcscd package via sudo apt install pcscd. 1 Test Configuration with the Sudo Command. Step 3. sudo editor /etc/ssh/authorized_yubikeys Fill it with the username followed by a colon and the first 12 characters of the OTP of the yubikey. Run: sudo nano /etc/pam. I don't know about your idea with the key but it feels very. GPG/SSH Agent. Run: mkdir -p ~/. See moresudo udevadm --version . Step. This package is an alternative to Paul Tagliamonte's go-ykpiv, a wrapper for YubiKey's ykpiv. . It represents the public SSH key corresponding to the secret key on the YubiKey. USB drive or SD card for key backup. Install GUI personalization utility for Yubikey OTP tokens. This means that web services can now easily offer their users strong authentication with a choice of authenticators such as security keys or. $ sudo service pcscd restart You may need to disable OTP on your Yubikey, I believe that newer Yubikeys are shipped configured to run all three modes (OTP, U2F and PGP) simultaneously. When Yubikey flashes, touch the button. You can upload this key to any server you wish to SSH into. It seems like the Linux kernel takes exclusive ownership over the YubiKey, making it difficult for our programs to talk with it. d/su; Below the line auth substack system-auth insert the following: auth required pam_u2f. If you do not known your udev version, you can check by running "sudo udevadm --version" in a Terminal. All 3 work when I want to sudo something in the terminal, but only the most recent configured key works for login. Virtual FIDO is a virtual USB device that implements the FIDO2/U2F protocol (like a YubiKey) to support 2FA and WebAuthN. wyllie@dilex:~ $ sudo apt-get install -y curl gnupg2 gnupg-agent cryptsetup scdaemon pcscd yubikey-personalization dirmngr secure. Now when I run sudo I simply have to tap my Yubikey to authenticate. Edit the. Enable the YubiKey for sudo Open the sudo config file for PAM in an editor: sudo nano /etc/pam. :~# nano /etc/sudoers. I'm using Linux Mint 20. com --recv-keys 32CBA1A9. Specify the expiration date for your key -- and yes, please set an expiration date. It's not the ssh agent forwarding. In order to authenticate against GIT server we need a public ssh key. Underneath the line: @include common-auth. It’s available via. The ykpamcfg utility currently outputs the state information to a file in. The output should look something like this: - AppStream 43 kB/s |CentOS Linux 8 - BaseOS 65 kB/s |88 4. And add the following: [username] ALL= (ALL) ALL. Run: pamu2fcfg >> ~/. service. sudo apt-get update sudo apt-get install yubikey-manager 2. After downloading and unpacking the package tarball, you build it as follows. These commands assume you have a certificate enrolled on the YubiKey. Updating Packages: $ sudo apt update. I can confirm that the @bisko workaround of configuring Karabiner-Elements to not modify events from the yubikey solves the USB error: kIOReturnExclusiveAccess problem on sierra (10. so cue Run command below: $ pamu2fcfg -umaximbaz > ~/. 1 pamu2fcfg -u<username> # Replace <username> by your username. 3 or higher for discoverable keys. In a new terminal, test any command with sudo (make sure the yubikey is inserted). Put your ssh-public key to /etc/security/authorized_keys (get it from yubikey for example using ssh-keygen -D /usr/lib64/pkcs11/opensc-pkcs11. Close and save the file. Note: In my opinion, you don't need to buy 2 YubiKeys if you back up your keys carefully. 2 for offline authentication. 1. For open source communities, CentOS offers a solid, predictable base to build upon, along with extensive resources to build, test, release, and maintain their code. YubiKey C Client Library (libykclient) is a C library used to validate an Yubikey OTP against Yubico’s servers. autonomouscolar (Orfeas Agis Karachalios) November 6, 2019, 8:18am 1. report. This guide covers how to secure a local Linux login using the U2F feature on YubiKeys and Security Keys. so middleware library must be present on the host to provide functionality to communicate with a FIDO device over USB, and to verify attestation and assertion signatures. While initially developed by Google and Yubico, with contribution from NXP Semiconductors, the standard is now hosted. The Yubikey is with the client. We have a machine that uses a YubiKey to decrypt its hard drive on boot. Click update settings. YubiKeyがピコピコ光って、触ると sudo が通って test がechoされるのを確認します。さらに別ターミナルを開いて、今度はYubiKeyを抜いて sudo echo test と打ち、パスワード入力が促される. Insert YubiKey into the client device using USB/Type-C/NFC port. This applet is a simpler alternative to GPG for managing asymmetric keys on a YubiKey. d/common-auth file before all other entries to enable Yubikey 2FA: auth sufficient pam_yubikey. I have a 16” MacBook Pro now and have followed the same process for U2F for sudo and su on my system. SCCM Script – Create and Run SCCM Script. Close and save the file. config/Yubico/u2f_keys When your Yubikey starts flashing just touch the metal part. d/common-u2f, thinking it would revert the changes I had made. YubiKeyがピコピコ光って、触ると sudo が通って test がechoされるのを確認します。さらに別ターミナルを開いて、今度はYubiKeyを抜いて sudo echo test と打ち、パスワード入力が促されるのを確認します。 以上2つの確認が通れば sudo の設定は大丈夫そうです. If this doesn't work for you, Yubico in the post Using a YubiKey with USB-C Adapters acknowledges that some adapters are just incompatible with its hardware. This includes sudo, su, ssh, screen lockers, display managers, and nearly every other instance where a Linux system needs to authenticate a user. Tags. Once the Yubikey admin pin code entered, the secret encryption key is in the Yubikey. The ykpamcfg utility currently outputs the state information to a file in. sudo apt install yubikey-manager Plug your yubikey inside the USB port. Download ykman installers from: YubiKey Manager Releases. This is the official PPA, open a terminal and run. g. Create a base folder for the Yubikey mk -pv ~/. (you should tap the Yubikey first, then enter password) change sufficient to required. $ sudo apt-add-repository ppa:yubico/stable $ sudo apt update $ sudo apt install yubikey-manager. rsa will work like before, so you don't need to change your workflow if you just want to try out using GnuPG for SSH authentication. For example: sudo apt update Set up the YubiKey for GDM (the desktop login. At this point, we are done. Add: auth required pam_u2f. ”. Following the reboot, open Terminal, and run the following commands. Place. Is anyone successfully using Yubikey for sudo? It seems promising, but there appears to be a weird bug which makes the setup kind or brittle. For example: sudo cp -v yubikey-manager-qt-1. config/yubico. Its flexible configuration allows you to set whichever authentication requirements fit your needs, for the entire system, a specific application, or for groups of applications. If you need to troubleshoot this set-up, first plug in the YubiKey and use opensc-tool --list-readers to verify that the OpenSC layer sees the YubiKey. Following the decryption, we would sometimes leave the YubiKey plugged into the machine. Run sudo go run . Second, several other files are mentioned in the guide that could be modified, but it’s not clear which ones, and some of them don’t have an. ( Wikipedia) Enable the YubiKey for sudo. It is complete. Step 3: Add SSH Public Key to Remote Server 1-Bit Blog How to use Yubikey with WSL2 via USB passthrough (or how I compiled my first custom Linux kernel) October 07, 2022.