When you open the yubikey manage, you will see the applications section, click on it and then the FIDO2 and reset. YubiHSM Auth uses hardware to protect these long-lived credentials. Note: Some software such as GPG can lock the CCID USB interface, preventing another software from accessing applications that use that mode. Python library and command line tool for configuring any YubiKey over all USB interfaces. I found another tutorial on how to using YubiKey for SSH authentication, setting it up the way McQueen Labs recommend, but this didn't work either: There wasn't a prompt for the card pin, making me think either this kind of SSH authentication is not done via PKE [unlikely] or there is a configuration option missing, as I received error:Select the department you want to search in. It is currently not possible to upgrade YubiKey firmware. Open Terminal. x firmware line. exe, the key-agent from the PuTTY-package, does not support smart cards, which is why further software is required. The YubiKey 5 Series supports most modern and legacy authentication standards. Possibility to clear configuration slots. 3 is not listed as affected because Yubico. Can the 5 hold more sub keys than the 4?The term passkey is an amalgamation of the terms password and key, a simple but subtle way of highlighting its utility as an authentication mechanism as familiar and ubiquitous as the traditional password, but invoking the imagery of reliability associated with a sturdy lock and a physical key. The YubiKey will wait for the user to press the key (within 15 seconds) before answering the challenge. It offers NFC, USB-C and USB-A Mini (optional) for the first time. Place the text cursor in the field where an OTP needs to be entered. Is a CSPN certified Yubikey 5 NFC (Firmware version 5. To ensure the YubiKey 4 offers strong security for all functions, we switched to a different, broadly scrutinized and deployed key generation function. 3 or higher. To set and manage the PIN, enroll fingerprints and manage stored credentials, Step 1: Launch the Yubico Authenticator, and select the YubiKey menu option. Soon, the YubiKey 5 Series firmware will also be. Resolution . Each YubiKey must be registered individually. Note: Some software such as GPG can lock the CCID USB interface, preventing another software from accessing applications that use that mode. 2. The YubiKey 5 Nano uses a USB 2. Convenient and portable: The YubiKey 5C fits easily on your keychain, making it convenient to carry and use wherever you go, ensuring secure access to your accounts at all times. The YubiKey 5 NFC, with firmware 5. You can learn more here. The YubiKey 4 and YubiKey NEO have five separate. Yubico announced they have already been working on actively replacing affected keys after. You might need to scroll horizontally to see the entire command. It allows users to securely log into. A pioneer in modern, hardware-based authentication and Yubico’s flagship product, the YubiKey is designed to meet you where you are on your authentication journey by supporting a broad range of authentication protocols, including FIDO U2F, WebAuthn/FIDO2 (passkeys), OTP/TOTP, OpenPGP and Smart Card/PIV. FriendlyName -like "*YubiKey*"} | Select-Object -ExpandProperty FriendlyName. YubiHSM Auth is a YubiKey CCID application that stores the long-lived credentials used to establish secure sessions with a YubiHSM 2. Use OATH with the YubiKey. The quickest and most convenient way to determine your device’s firmware version is to use the YubiKey Manager tool (ykman), a lightweight software package installable on any OS. On Linux platforms you will need pcscd installed and running to be able to communicate with a YubiKey over the SmartCard interface. Professional Services. The firmware on it is 5. 4. If you're looking for setup instructions for your. RESOURCES Buy YubiKeys Blog Newsletter Yubico Forum Archive. YubiHSM Auth is supported by YubiKey firmware version 5. Deploying the YubiKey 5 FIPS Series. These OTP configurations are stored in “OTP Slots”, and the user differentiates which slot to use by how long they touch the gold contact; a short touch (1 2. Last year we released Yubico Authenticator 5. The YubiKey 5 NFC FIPS uses a USB 2. The firmware doesn't report how much space allocated to the smart card applet is currently in use. 3. Primary Functions: Secure Static Passwords, Yubico OTP, OATH – HOTP (Event), OATH – TOTP (Time), Smart Card (PIV-Compatible), OpenPGP, FIDO U2F, FIDO2. YubiKey NEO. In addition to the two "slots" your Yubi can also hold gpg keys. With the release of the v2. For YubiKey 5 Series firmware-based capabilities, see Firmware: Overview of Features & Capabilities and Protocols and Applications. Since the YubiKey does not contain a battery it cannot track time and will require software to. 3 FIPS 140-2 Security Level: 1 1. The YubiKey 5 Series supports most modern and legacy authentication standards. 4. Usually, when using a HSM for a CA, we mean: the CA private key (usually RSA) is generated, stored and used within the HSM, and the HSM will commit honourable suicide rather than letting that key ever exit its entrails. The YubiKey 5C uses a USB 2. This applies to: Pre-built packages from platform package managers. To find compatible accounts and services, use the Works with YubiKey tool below. 0 interface. If you confirm OTP is enabled, either through the YubiKey NEO Manager or Devices and Printers, you may need to run the Personalization Tool GUI as Administrator (or. The YubiKey was created to make stronger authentication available and easy to use for all. Strong hardware-based security ensures the highest bar for protection of sensitive information and data. 4 (inclusive) since these chips are vulnerable to CVE-2017-15631. For each service you set up, have your spare YubiKey ready and add it right after the first one before moving to the next. Works out-of-the-box with operating systems and. 2 and 4. Instead of a code being texted to you, or generated by an app on your phone, you press a button on your YubiKey. Note: Some software such as GPG can lock the CCID USB interface, preventing another software from accessing applications that use that mode. When using OATH with a YubiKey, the shared secrets are stored and processed in the YubiKey’s secure element. It provides an easy way to perform the most common configuration tasks on a YubiKey, such as: Checking Firmware Version Launch the YubiKey Manager App and connect your YubiKey if it is not already connected. *The YubiHSM Auth application is only available in YubiKey firmware 5. For YubiKey version 5: $ ykman info Device type: YubiKey 5 NFC Serial number: XXXXXXXXX Firmware version: 5. The YubiKey NEO has USB 2. Traditionally, [SSH keys] are secured with a password. The YubiKey Authentication Module can validate the OTP against either its own Validation Server or against the Yubico Online Validation Service. The secrets always stay within the YubiKey. 12, and Linux operating systems. 0 interface. Features include: Secure – Hardware-backed strong two-factor authentication with secret stored on the YubiKey, not on the mobile device. YubiKey works out-of-the-box and has no client software or battery. 2, this marks a major upgrade from three years ago when the original YubiKey FIPS Series was launched with firmware. Note: The YubiKey 5 FIPS Series with initial firmware release version 5. The user account must be in Azure AD. DEV. The YubiKey secures the software supply chain and 3rd party access with phishing-resistant MFA. yubi. 3. 4). Yubikey. 4. Browse the YubiKey compatibility list below! Explore the Works With YubiKey Catalog to find a wide range of. If YubiKey Manager or another Yubico configuration software is used to switch the contents of slot 1 and slot 2 after a YubiKey has been configured for Yubico Login for Windows, the YubiKey will not work with Yubico Login for Windows. Check the firmware version for your YubiKey Neo as a security flaw allows a bypass of the PIN. This document explains how to configure a Yubikey for SSH authentication Prerequisites Install Yubikey Personalization Tool and Smart Card Daemon kali@kali:~$ sudo apt install -y yubikey-personalization scdaemon Detect Yubikey First, you’ll need to ensure that your system is fully up-to-date: kali@kali:~$ pcsc_scan Scanning present readers. The information provided is based on general availability (GA) product releases and YubiKeys that support the FIDO standards. 7+) FIDO: 0x0402: YubiKey FIDO: YubiKey Bio Series: FIDO: 0x0402: YubiKey FIDO *The YubiKey FIPS (4 Series) and YubiKey 5 FIPS Series devices, when deployed in a FIPS-approved mode, will have all USB interfaces enabled. For more information. YubiKey 5C NFC. ECC keys are supported on YubiKey 5 devices with firmware version 5. YubiKey firmware 1. 7. 3. FIPS is a security certification that meets strict security standards. ) Yubikey: Yubico Yubikey 5 NFC (Firmware version: 5. 2, Yubico offers support for the latest FIDO2/WebAuthn functionality, offering advancements in FIDO credentials management and protection. Years in operation: 2020-present. This is a non-proprietary FIPS 140-2 Security Policy for the Yubico, Inc. For example 5. 4. That was all time wasted that you could. ykman fido credentials list [OPTIONS] ykman fido fingerprints [OPTIONS] COMMAND [ARGS]…. 4. 2, Apple provides native support for smart cards, enabling any PIV-compatible smart card to interact with an iPhone without any additional hardware readers or software. Discover the simplest method to secure logins today. 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. 3) where random values leveraged in some YubiKey FIPS applications contain reduced randomness for the first operations performed after YubiKey FIPS power-up. 4. Unfortunately your situation is as described above. “Hi XXX, Thank you for reaching out to Yubico Support! We were able to test with a iPhone 14 Pro Max and a YubiKey 5C NFC with firmware 5. Interface. View Black Friday Deal at Amazon. Like the Nitrokey, the Librem key is based on open-source firmware. This is in addition to the existing Triple-DES based management keys. The YubiKey 5 and Security Key Series support the FIDO2 standard that covers all the scenarios listed below. After inserting the YubiKey into a USB Port select Continue. It's small—a little shorter than a house key. You can make sure your Yubikey supports the needed hmac-secret extension by querying it with ykman: $ ykman --diagnose 2>&1 | grep hmac-secret Backup your LUKS header. 2, Apple provides native support for smart cards, enabling any PIV-compatible smart card to interact with an iPhone without any additional hardware readers or software. Click Next. YubiKey Manager CLI (ykman) User Manual. Learn how you can set up your YubiKey and get started connecting to supported services and products. Up to the tamper-resistance of the HSM and how bug-free its. 5. How the YubiKey works. Yubikey is more simplistic and user friendly, the apps are more polished. 3. 0 – 5. 2, Yubico offers support for the latest FIDO2/WebAuthn functionality, offering advancements in FIDO. 2. Support Services. Stops account takeovers. government. Multi-protocol. You will need SSH 8. Versions 1. The access code is not checked when updating NFC specific components. 4. Multi-protocol security key, eliminate account takeovers with strong two-factor, multi-factor and passwordless authentication, and seamless touch-to-sign. The YubiKey then enters the password into the text editor. x and later Long press (slot 2): YubiKey firmware 2. Command APDU info. Under "Security Keys," you’ll find the option called "Add Key. The YubiKey Manager has both a. . (Black) View Black. 4. ykman fido credentials delete [OPTIONS] QUERY. Once an app or service is verified, it can stay trusted. Convenient and portable: The YubiKey 5 NFC fits easily on your keychain, making it convenient to carry and use wherever you go, ensuring secure access to your accounts at all times. CompanyThe YubiKey NEO-n has five distinct applications, which are all independent of each other and can be used simultaneously. This applet is not configurable and cannot be reset. To reset the FIDO, first download the yubikey manager and insert the key into a port on your pc. 0 – 5. See this article for more info. Additionally, you may need to set permissions for your user to access YubiKeys via the. Meets the most stringent hardware security requirements with fingerprint templates stored in the secure element on the key. Google found support calls dropped, with 92% reduction in support incidents, saving thousands of hours per year in support costs. The next major release of the YubiKey Validation Server will become available by July 2020. Copyable passkeys can be synced across smartphones, tablets, and laptops/desktops and are primarily meant for. Once an app or service is verified, it can stay trusted. 2. Multi-protocol security key, eliminate account takeovers with strong two-factor, multi-factor and passwordless authentication, and seamless touch-to-sign. Click Select a server from the server pool, and from Server Pool, select the server on which you want to install the Certification Authority. Note: Some software such as GPG can lock the CCID USB interface, preventing another software from accessing applications that use that mode. Even if they did update the firmware in newer runs of the keys, there's no guarantee that the old ones have cleared the channel. use a password manager like. 1 firmware just released, roadblocks that prevented YubiHSM 2 products integration with more widely available libraries and operating systems have been removed. Physical Specifications Form Factor. 7!Yubico is the leading provider of hardware authentication security keys — devices which protect logins to online accounts from phishing, man-in-the-middle, and other threats of account takeover. You can also use the tool to check the type and firmware of a YubiKey. With the release of the YubiKey firmware version 5. Works out of the box with Google, Microsoft, Twitter, Facebook, password managers, and hundreds of other services. if your YubiKey firmware version is newer than 5. Documentation The complete reference manual on the YubiKey is required reading if you want to understand the entire picture and what each parameter does. 4. The YubiKey firmware 5. Version 1. config/Yubico. 6(orlater. 0 to 4. YubiKey firmware 4. When a confirmation page appears, click reset to confirm. Once we were notified of this issue by Infineon we quickly addressed it. Yubico has developed a range of mobile SDKs, such as for iOS and Android, and also desktop SDKs to enable developers to rapidly integrate hardware security into their apps and services, and deliver a high level of security on the range of devices, apps and services users love. 2130) GnuPG: 2. The firmware can never be updated and Yubico has definitely added new features within the lifetime a single product eg. Physical Specifications Form Factor. The YubiKey also allowed for issuing multiple backups to each employee, including one YubiKey nano designed to sit inside the user’s laptop and one YubiKey designed for a keychain. You can also use the tool to check the type and firmware of a YubiKey, or to perform batch programming of a large number of YubiKeys. 2) and can not do this. Set the scanmap to use with the YubiKey. New feature - no, you have to buy the key yourself if you want the new shiny stuff. Run: sudo add-apt-repository ppa:yubico/stable && sudo apt-get update. Supported functionality as reported by the ykman tool: . Shipping and Billing Information. Visit the Yubico website and check for the latest firmware updates for your YubiKey model. PIV is an application on the YubiKey that gives it smart card capabilities. Unfortunately, my YubiKey 5 NFC does have an older firmware (5. The change rGf34b9147e fixed the issue. 4. multi-factor authentication. If the YubiKey is not marked “FIPS” but you suspect it is a FIPS device you can also use YubiKey Manager to confirm the YubiKey model and firmware version. The firmware in a Yubikey is included with the device itself, and is physically stored as programming within the EEPROM (or ROM -- ready-only memory). YubiKey 5 CSPN Series. 4. Created June 8, 2022 - Updated 7 months ago The YubiKey works directly out of the package. The tool uses a simple step-by-step approach to configuring YubiKeys and works with any YubiKey (except the Security Key). As other commenters have pointed out, the Yubikey firmware cannot be written to. 4. YubiHSM, YubiHSM 2, YubiKey 5 Series, YubiKey 4 Series, YubiKey FIPS Series, Security Key by Yubico Series, or previous generation YubiKey devices are not impacted. 0 (included in the YubiHSM 2 SDK 2023. The firmware version on a YubiKey or an HSM therefore determines whether or not a feature or a capability is available to that device. The YubiKey 5C Nano FIPS has five distinct applications, which are all independent of each other and can be used simultaneously. I could absolutely use the YK4 or NEO for basically anything I do today. Download the Yubico Authenticator App. 2 or 4. The YubiKey gets rid of any time spent trying to remember your passwords or having to reset everything because you’ve forgotten it. 3. Support for OpenPGP was added in firmware version 5. serial-usb-visible: The YubiKey will indicate its serial number in the USB iSerial field. YubiKey Manager. Company. Software that allows the Yubikey to communicate with other services. Alternatively, YubiKey Manager can be used to check the model and firmware version. It works by generating 2-step verification codes on either your mobile or desktop device through OATH-TOTP security protocol. Watch the video. 4. A single YubiKey works across multiple shared devices including desktops, laptops, mobile, tablets, and notebooks, enabling users to utilize the same key as they navigate between devices, and helping you deploy phishing-resistant MFA at scale. Meaning that a restart of the operating system is not rebooting or making any. You can choose YubiKey OTP or, if your YubiKey supports it, FIDO2 WebAuthn. 6. PGP is not used for web authentication. FIDO U2F. 3. And a full range of form factors allows users to secure online accounts on all of the. Update YubiKey Firmware Outdated firmware can cause compatibility problems and malfunctions. 4+) FIPSYubiKeyValue(FW 5. The YubiKey 4 has five distinct applications, which are all independent of each other and can be used simultaneously. What a bummer. To find out if an application is compatible with the Security Key by Yubico, browse to the Works With YubiKey Catalog, and in YubiKey drop-down, select Security Key by Yubico to only display services that are compatible with it. On Linux platforms you will need pcscd installed and running to be able to communicate with a YubiKey over the SmartCard interface. Today, we are happy to share that the YubiKey 5 Series firmware has completed testing by our NIST accredited testing lab, and has been submitted to the Cryptographic Module Validation Program (CMVP) for FIPS 140-2 certification, Overall Level 2, Physical Security Level 3. CHEATSHEETS. Today, we are excited to share some updates regarding the next highly-anticipated members of our YubiKey family: the upcoming YubiKey Bio in both USB-A and USB-C form factors. 0. Enabling or Disabling Interfaces. CLA INS P1 P2 Lc Data; 0x00: 0x01: 0x14: 0x00 (absent) (absent) Response APDU info. To find out if an application is compatible with the YubiKey C Bio - FIDO Edition, browse to the Works With YubiKey Catalog, and in YubiKey drop-down, select YubiKey Bio Series to only display services that are compatible with it. YubiKey 5 Cryptographic Module. Yubico Authenticator for Desktop (Windows, macOS and Linux) and Android. com at a retail price of $80 for the USB-A form-factor and $85 for the USB-C form-factor. 4 or higher. Yubico made a security advisory post on their site last Thursday explaining the Yubikey issue, which involved only their FIPS keys (their more hardened keys), specifically ones with firmware versions 4. Plug the key into the device you're currently working on, type a name for the key in the Bitwarden 2FA login popup, and click Read Key. Well, Yubikey with new firmware is on the way from Germany to Japan. As a result, FIDO2 security keys like the YubiKey are now. With the YubiKey software, you can enable or disable features on your YubiKey, like PIV, OATH or OpenPGP. YubiKey FIPS devices with firmware versions 4. Secure all services currently compatible with other. The secure session protocol is based on Secure Channel Protocol 3 (SCP03). To begin, the client identifies the function they wish to communicate with and sends the Initialize Update command. 3. The Yubico Authenticator adds a layer of security for your online accounts. 2 and 4. The YubiKey 5C NFC FIPS has five distinct applications, which are all independent of each other and can be used simultaneously. Recently I have been thinking of using my Yubikeys for SSH. Trustworthy and easy-to-use, it's your key to a safer digital world. Use the Yubico Authenticator for Desktop on your Windows,. 3. Yubico SCP03 Developer Guidance. You can also use the tool to check the type and firmware of a. This is because reboot of the machine nor re-insertion of the YubiKey would looks the same to the YubiKey firmware. 4 (there is no released firmware version 4. And a full range of form factors allows users to secure online accounts on all of the. 1 for Desktop, in which we added functionality for managing the FIDO/WebAuthn features of your YubiKey such as changing your PIN, or registering your fingerprint to a YubiKey Bio. Firmware version: [your yubikey firmware version] Form factor: [description of your yubikey interface] Enabled USB interfaces: [list of what is enabled] Applications OTP Enabled FIDO U2F Enabled OpenPGP Enabled PIV Enabled OATH Enabled FIDO2 Enabled The important part for this, is to make sure that the "openpgp" "app" on your. 6. The cryptographic functionality of the YubiKey. Interface. Interface. In addition, you can use the extended settings to specify other features, such as to disable fast triggering, which prevents the accidental triggering of the nano-sized YubiKeys when only slot 1 is configured. Patch version number of the firmware running on the. This has two advantages over storing secrets on a phone: Security. This issue potentially affects developers, partners, and customers who have used a YubiKey Validation Server to build a self-hosted one-time password (OTP) validation service. Infineon RSA Key Generation Issue - Customer Portal. Yubico was already the highest prices and just riding brand loyalty for being the first major success. Phoenix Software enables digital transformation in the workplace. Run: mkdir -p ~/. 3 and up can utilize longer responses to queries from OpenPGP, allowing more data to be sent per interaction and reduce the overall time for operations, especially in environments where the USB communication latency is the largest bottleneck. I have recently purchased the yubikey 5 from local vendor in my country. 4. Open Yubico Authenticator for iOS. 4 or 4. CLA INS P1 P2 Lc Data; 0x00: 0x01: 0x10: 0x00 (absent) (absent) Response APDU info. YubiKey Secure Channel Initialize Update Flow. Or. ) Yubikey: Yubico Yubikey 5 NFC (Firmware version: 5. Use the Yubico Authenticator for Desktop on your Windows, Mac, or Linux computers. YubiKey PIV introduction; Releases. Nitrokey's firmware is open source, unlike the YubiKey. The replacement is free and you don't need to turn in your old device. YubiKeys support multiple authentication protocols so you are able to use them across any tech stack, legacy or modern. change working directory where yubikey manager is installed using cd command. 2 Enhancements to OpenPGP 3. The YubiKey is a device that makes two-factor authentication as simple as possible. 3) NFC Reader: ACR1251 (ACR1251U-A1) Also, I installed the driver for this NFC reader and the Yubikey MiniDriver. stored using the cloud, it’s best to. Yubikeys are a type of security key manufactured by Yubico. The quickest and most convenient way to determine your device’s firmware version is to use the YubiKey Manager tool (ykman), a lightweight software package installable on any OS. The series provides a range of authentication choices including strong two-factor, multi-factor and passwordless authentication, and seamless touch-to-sign. Allows HMAC-SHA1 with a static secret. Here are the top information security recommendations of 2022. 0 and NFC interfaces. The OTP application allows a user to set optional access codes on OTP slots. Keep in mind serial numbers are unique across all models of YubiKeys, with the exception of Security Keys, which do not have serial numbers. YubiKey Manager is a cross-platform tool; it runs on Windows, macOS, and Linux. Instead of a code being texted to you, or generated by an app on your phone, you press a button on your YubiKey. The YubiKey Bio Series, built primarily for desktops, offers secure passwordless and second factor logins, and is designed to offer strong biometric authentication options. e. 4. Yubico’s YubiKey 5 NFC — which uses both a USB-A connector and wireless NFC — is the best key for logging into your online accounts. What’s New in YubiKey Firmware 5. I would not recommend using the Yubico for Windows Login software tool in a widespread professional capacity for desktop authentication. Yubico has started shipping the YubiKey 5 Series with firmware 5. The EXTERNAL_AUTHENTICATE command with security level C-DECRYPTION, R-ENCRYPTION, CMAC and R-MAC is the only supported option. Release version 2021. These series of keys incorporate a three chip design. 2. Our customers include 9 of the top 10 internet companies, 3 of the 5 leading financial and retail companies, and several of the largest. Keep your online accounts safe from hackers with the YubiKey. A phone can get stolen, sold, infected by malware, have its storage read by a connected computer. The YubiKey FIPS (4 Series) are marked “FIPS” and will have firmware version 4. Check out some of the simple ways your organization can now help prevent phishing with CBA. No more reaching for your phone to open an app, or memorizing and typing in a code – simply touch the YubiKey to verify and you’re in. 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),. ykman fido credentials list [OPTIONS] ykman fido fingerprints [OPTIONS] COMMAND [ARGS]…. YubiHSM Auth is supported by YubiKey firmware version 5. Description . Write NDEF text to YubiKey NEO, must be used with -1 or -2 -mMODE Set the USB device configuration of the YubiKey. Yubico made a security advisory post on their site last Thursday explaining the Yubikey issue, which involved only their FIPS keys (their more hardened keys), specifically ones with firmware versions 4. There are many differences between the Yubico Authenticator and other authenticators. When prompted, press Enter to confirm adding the PPA. ubuntu. Simply plug in via USB-C to authenticate. General. Portable – Get the same set of codes across our other Yubico Authenticator apps for desktops as well as for all leading mobile platforms. Each application, along with a link to the related reset instructions, is listed below. Follow the. As of today, we're starting to ship the YubiKey 5 Series with firmware 5. If you receive the. 0 interface. Under Windows 10, it is well detected with the GUI version 3. In case you mess anything up, you would need a backup of your LUKS header. 7. The Nano model is small enough to stay in the USB port of your computer. YubiHSM Auth uses hardware to protect these long-lived credentials. YubiKey 5 Series. 75mm. Enabled capabilities (USB) 0x03: Applications that are currently enabled over USB on this YubiKey. Experience stronger security for online accounts by adding a layer of security beyond passwords. YubikeyManager is a piece of software used to configure/manipulate yubikeys. This will not only provide the highest. . To use the ed25519 curve (requires a YubiKey with firmware 5. It isn't that sort of USB device. Interface. 6g . Connector: USB-A Dimensions: 18mm x 45mm x 3. 3. Ready to get started? Identify your YubiKey. 4. The YubiKey. Introduction Yubico Login for Windows adds the Challenge-Response capability of the YubiKey as a second factor for authenticating to local Windows. 2 firmware. Learn more > Knowledge base. As of iOS 14. As of today, we're starting to ship the YubiKey 5 Series with firmware 5. 4. 4. This is. Remove and re-install the key in case you face any prompts.