Feitian K28E Nano FIDO2 USB-C Security Key – PIV, OpenPGP & OTP

Buy Feitian K28E Nano – Enterprise multi-protocol FIDO2 USB-C Security Key – PIV, OpenPGP & OTP hardware token ultra-compact micro-sized design

Feitian K28E Nano FIDO2 USB-C Security Key – PIV, OpenPGP & OTP is a compact, multi-protocol hardware security key supporting FIDO2, FIDO U2F, WebAuthn, CTAP2.1, HOTP/TOTP/OTP, PIV, and OpenPGP over USB-C, with touch-based, non-biometric user authentication.

Feitian K28E Nano FIDO2 USB-C Security Key – Buy Feitian K28E Nano FIDO2 USB-C Security Key with FIDO2, U2F, PIV, OpenPGP, HOTP/TOTP and USB-C support. Compact multi-protocol security key.

Features:

• FIDO U2F & FIDO2 certified security key for strong passwordless and two-factor authentication.
• USB-C interface with standard HID device compatibility.
• Smart card secure element with a JavaCard operating system for secure credential and application management.
• Supports HOTP/TOTP OTP authentication.
• Supports PIV for smart-card-based authentication and digital certificates.
• Supports OpenPGP for cryptographic key management and secure communications.
• One authenticator can support multiple authentication applications.
• Works with Google Chrome and other FIDO-compliant applications.
• Compatible with Windows, macOS, and Linux.
• Can be used with services such as Google Workspace, Gmail, Facebook, Dropbox, and other supported FIDO-enabled services.
• Compact and durable design suitable for everyday use.
• Touch-Based, Non-Biometric Authentication

What each technology means

Technology	What it does on the K28E Nano
USB-C	Physical connection/interface to a compatible computer or device.
FIDO2	Modern phishing-resistant authentication standard for passwordless login and strong 2FA.
FIDO U2F	Earlier FIDO authentication protocol used as a second factor for supported services.
HOTP/TOTP/OTP	One-time-password authentication. HOTP is counter-based; TOTP is time-based.
PIV	Smart-card-based credential and certificate authentication, commonly used for enterprise access and PKI applications.
OpenPGP	Cryptographic functionality for OpenPGP applications, including secure key operations.
WebAuthn	The browser/API layer that allows websites and web applications to communicate with FIDO authenticators.
CTAP2.1	The Client to Authenticator Protocol used for communication between a client device and a FIDO authenticator; CTAP2.1 provides capabilities used by modern FIDO2 authentication.
Touch authentication	The user physically touches the security key to authorize a FIDO operation. This is not fingerprint/biometric authentication.

Feitian K28E Nano USB-C vs YubiKey 5C Nano

FEITIAN K28E — USB-C Nano Multi-Protocol Security Key
→ FIDO2 + U2F + PIV + OpenPGP + OTP
→ Good alternative for enterprise deployments requiring multiple authentication protocols.

YubiKey 5C Nano — USB-C Nano Multi-Protocol Security Key
→ FIDO2 + U2F + PIV + OpenPGP + OATH + Yubico OTP
→ Strongly established Yubico ecosystem and detailed credential-capacity specifications.

The important difference

K28E is not simply a FIDO2-only alternate of the YubiKey. Its major attraction is that Feitian K28E Nano puts several enterprise authentication functions into the same USB-C nano form factor:

• FIDO2 / WebAuthn
• FIDO U2F
• PIV
• OpenPGP
• HOTP/TOTP/OTP
• USB-C
• CTAP2.1

FEITIAN’s product directory specifically lists the K28E with FIDO, PIV, OpenPGP and OTP applets.

FEITIAN K28E Nano USB-C FIDO2 Security Key – YubiKey 5C Nano Alternative

FEITIAN K28E Nano USB-C FIDO2 Security Key is a compact USB-C security key designed for passwordless authentication, multi-factor authentication (MFA), FIDO2/WebAuthn and enterprise credential protection. As a YubiKey 5C Nano alternative, the K28E combines FIDO2 and U2F authentication with HOTP/TOTP, PIV smart-card and OpenPGP capabilities in one USB-C security token.

We official listing confirms that the K28E ePass FIDO Plus uses USB-C and supports FIDO U2F, FIDO2, HOTP, TOTP, PIV and OpenPGP. It is designed as a compact multi-application security key for Windows, macOS and Linux.

The YubiKey 5C Nano similarly supports FIDO2/WebAuthn, FIDO U2F, PIV, OpenPGP, OATH-TOTP/HOTP and Yubico OTP. Yubico specifies USB-C 2.0, 100 FIDO2 passkey slots, 64 OATH slots, 24 PIV certificates and IP68 protection for the current model.

Buyer-focused comparison – Enterprise/security-token alternative

Feature	FEITIAN K28E Nano USB-C Two-Factor Security Key	YubiKey 5C Nano
Product type	USB-C multi-protocol security key	USB-C multi-protocol security key
Manufacturer	FEITIAN	Yubico
USB interface	USB-C	USB-C
FIDO2	✅ Yes	✅ Yes
FIDO U2F	✅ Yes	✅ Yes
Passwordless authentication	✅ Yes	✅ Yes
HOTP	✅ Yes	✅ Yes
TOTP	✅ Yes	✅ Yes
PIV / Smart Card	✅ Yes	✅ Yes
OpenPGP	✅ Yes	✅ Yes
Secure element	✅ Smart card secure element and JavaCard operating system	✅ Yes
NFC	❌ No	❌ No
Operating systems	Windows, macOS, Linux and compatible FIDO applications	Windows, macOS, ChromeOS, Linux
Mobile USB-C support	✅ USB-C devices	✅ USB-C devices
Form factor	Compact / Nano form factor profile USB-C design	Nano form factor designed to remain inserted
Dimensions	Approx. 0.8 × 1.7 × 1.5 cm reported by retailer	12 × 10.1 × 7 mm
Weight	Lightweight	Approx. 1 g on Yubico’s current product page
Water/dust resistance	Manufacturer information should be checked for the specific K28E revision	✅ IP68
USB insertion cycles	Not prominently specified by FEITIAN	100,000+
Write/erase cycles	Not prominently specified by FEITIAN	500,000+
Secure authentication	✅ Hardware-based authentication	✅ Hardware-based authentication
Enterprise features	PIV, OpenPGP, OTP and FIDO protocols	PIV, OpenPGP, OTP and FIDO protocols
Best suited for	Users wanting a compact multi-protocol USB-C security key	Users wanting a highly established Yubico ecosystem and extensive compatibility
Brand ecosystem	FEITIAN / FEITIAN SK Manager ecosystem

Multi-Protocol Authentication in One Security Key

The Feitian K28E Nano FIDO2 USB-C Security Key combines several authentication technologies in one compact device. Organizations and users can use the same authenticator for FIDO2, FIDO U2F, OTP, PIV, and OpenPGP applications, reducing the need to carry separate security tokens.

FIDO2 & U2F Security for Online Accounts

FIDO2 and U2F provide phishing-resistant authentication mechanisms that can add an additional hardware-based security layer to supported accounts and applications. The K28E Nano can be used for 2FA, FIDO2 authentication, and U2F authentication where supported.

PIV, OpenPGP & OTP Support

Beyond FIDO authentication, the K28E Nano supports additional security applications:

• OTP: HOTP and TOTP authentication.
• PIV: Certificate-based authentication and smart-card applications.
• OpenPGP: Cryptographic key operations for supported applications.
• FIDO2/U2F: Hardware-backed authentication for compatible online services.

This multi-application capability makes the device suitable for users and organizations requiring a versatile USB-C security key.

Compatibility

The Feitian K28E Nano FIDO2 USB-C Security Key operates as a standard HID device and supports FIDO-compliant applications on:

• Windows
• macOS
• Linux
• Google Chrome
• Gmail and other supported Google services
• Facebook
• Dropbox
• Other FIDO-compatible applications and services

Compatibility depends on the authentication protocol and the individual application or service.

Nano Compact & Durable USB-C Security Key ultra-compact micro-sized design

Designed for portability, the K28E Nano features a compact and durable form factor that is convenient for daily authentication. Its USB-C interface makes it suitable for modern computers and devices equipped with USB-C ports.

Buy Feitian K28E Nano FIDO2 USB-C Security Key

Looking to Buy Feitian K28E Nano FIDO2 USB-C Security Key for secure authentication, certificate-based access, OTP, or OpenPGP applications? The K28E Nano provides multiple authentication protocols in a single compact hardware security key.

Request pricing, availability, and bulk quantities for the Feitian K28E Nano FIDO2 USB-C Security Key.

K28E User Manual

Let’s get started with your ePass FIDO Plus K28E security key

• Windows built-in Security Key Manager

Users are able to set the PIN of security key, manage fingerprints and reset the security keys. This tool can be found in “Settings” => “Accounts” => “Sign-in options” => “Security Key”.

• Chrome built-in Security Key Manager

This tool is available in the latest Chrome browser in macOS and Linux core system.

Users can find this tool in “Chrome Settings” => “Privacy and security” => “Manage security keys”.

FEITIAN SK Manager

SK Manager helps user to manage and configure the ePass FIDO Plus K28E, including FIDO, OTP and PIV.

SK Manager is available at: https://fido.ftsafe.com/feitian-sk-manager-tool-user-manual/

How it works

For a typical FIDO2/WebAuthn login:

Website → WebAuthn → Operating System/Browser → CTAP → K28E Nano → User Touch → Authentication

The private credential remains protected by the hardware authenticator rather than being exposed to the website.

Touch ≠ biometric authentication

This distinction is important for your product page:

Touch-based authentication:
The K28E Nano detects that the user has physically touched the security key and uses that touch as user-presence confirmation.

Biometric authentication:
A biometric key, such as a fingerprint-enabled FIDO2 key, verifies a fingerprint or another biological characteristic.

Therefore, it is as describe the K28E Nano as:

Touch-based user presence authentication — non-biometric; no fingerprint sensor.