Chrome, Firefox and Opera have already supported U2F within their browsers along with major applications such as Facebook, Github and Dropbox. The U2F standard is supported by the FIDO Alliance, with includes compatibility with major companies. In addition, the information stored on the key is encrypted, diminishing the risk of keylogger, phishing, man-in-the-middle ( MitM), malware and session hijacking attacks. If the U2F key is not present, access will not be granted. Once the line of communication is initiated, a challenge-response authentication mechanism ( CRAM) sends the private key on the device to the public key on the computer to unlock it. After the initial password to an account is entered, the device communicates to the host computer via the HID protocol, or the standard that simplifies the transmission of external devices to the computer. U2F devices are connected to a computer via a USB port or smartphone and can be turned on with certain applications or websites. Therefore, Universal 2nd Factor is a universal standard created by Google and Yubico for streamlining two-factor authentication with any service or account. However, depending on cellular devices for authentication creates a large amount of risk and no two account verifications are alike. The second, and external, factor can be receiving an SMS message or phone call with a temporary code or relying on connected authenticator applications. The internal factor is a basic password or PIN, something that is entered on the platform. Two-factor authentication ( 2FA) is used as a basic way to protect sensitive information and relies on an internal and external factor. Typically seen as a USB, Near-Field Communication ( NFC), or Bluetooth device, two-factor authentication is simplified and strengthened with the use of smart chip technology.
Universal 2nd Factor (U2F) is a type of physical authentication device that uses encryption and private keys to protect and unlock supported accounts.
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