Basically, in addition to your login and password, the second form of authentication is generated on a device that only you can access and not a potential hacker. Typically this comes in the form of inputting a code sent to a cell phone or, if you have an Authenticator set up with that account, typing in the code from that application. 2FA, short for two-factor authentication, is an extra layer of security for logging into an account on an untrusted device or computer. You might be asking yourself what this two-fah thing is. I feel like before getting into the review of this specific YubiKey 5Ci, I should write a little explainer of what a 2FA security key is used for. Device Type: FIDO HID Device, CCID Smart Card, HID Keyboard.Cryptographic Specifications: RSA 2048, RSA 4096 (PGP), ECC p256, ECC p384.Certifications: FIDO 2 Certified, FIDO Universal 2nd Factor (U2F) Certified.Function: WebAuthn, FIDO2 CTAP1, FIDO2 CTAP2, Universal 2nd Factor (U2F), Smart card (PIV-compatible), Yubico OTP, OATH – HOTP (Event), OATH – TOTP (Time), Open PGP, Secure Static Password.Design & Durability: No Batteries Required, No Moving Parts.Authentication Methods: Passwordless, Strong Two Factor, Strong Multi-Factor.Weight: 2.The 5Ci can connect to any USB-C or Lightning port, so any newer MacBook, iPad, Android phone or iPhone.
For key sizes over 2048 bits, GnuPG version 2.0 or higher is required.Ĭonnectors: USB-C, Lightning Dimensions: 12mm x 40.3mm x 5mm. This application implements version 3.4 of the OpenPGP Smart Card specification which can be used with GnuPG.
On Windows, the smart card functionality can be enhanced with the YubiKey Smart Card Minidriver. This application provides a PIV compatible smart card. Accessing this applet requires Yubico Authenticator. The YubiKey 5 series can hold up to 32 OATH credentials and supports both OATH-TOTP (time based) and OATH-HOTP (counter based). The U2F application can hold an unlimited number of U2F credentials and is FIDO certified Programmable slots, each can hold one of the following credentials: The credentials can be protected with a PIN for convenient and strong two factor authentication. The FIDO2 application allows for resident credentials to be stored and allows for password-less login on sites and devices that support it. All of the applications are available through this interface The YubiKey 5Ci uses a USB 2.0 interface. Note: Some software such as GPG can lock the CCID USB interface, preventing another software from accessing applications that use that mode. The YubiKey 5Ci has six distinct applications, which are all independent of each other and can be used simultaneously.
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