• For developers

    Free and open source software to rapidly integrate YubiKey strong two-factor, multi-factor and passwordless authentication into your software or service.
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    Rapid integration of strong authentication

    Open source code

    Integrate the YubiKey with your service, it’s quick and easy. The YubiKey works seamlessly with Windows, MacOS, Linux, iOS, and Android devices. No extra software for your users to download or license.

    Developer tools

    Use our reference documentation and testing tools to rapidly enable one touch authentication for your users. The YubiKey supports FIDO, PIV-compatible Smart Card, One-time Passwords (OTP), and OpenPGP.

    Own your secrets

    Control your own cryptographic secrets. No passwords, keys, PINs or other secrets are shared with Yubico.

    Yubico’s SDK offerings deliver rapid integration of
    hardware-based strong authentication

    YubiKey SDKs

    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.

    YubiHSM SDKs

    The YubiHSM2 SDK contains a set of tools and interfaces to manage the YubiHSM 2 and YubiHSM 2 FIPS hardware. Microsoft’s KSP and PKCS#11 modules are included in this SDK as well.

    Learn more >

    Developer program

    The Yubico Developer Program provides resources for organizations implementing strong authentication. We offer free workshops, documentation, implementation guides, APIs and SDKs. Join our mailing list to get early access to resources for implementing the FIDO2, WebAuthn specification.

    Works with YubiKey program

    Join the Works with YubiKey program to have your products and services featured on the Works with YubiKey catalog. Participate in co-marketing activities that showcase your solution and promote the value of strong authentication.

    Fido logo

    Developer videos

    Introduction: FIDO2 authentication – watch now

    Featured solutions

    Read about some of the recent and most popular YubiKey integrations.

    YubiKey firmware update: YubiKey 5 Series with firmware 5.4
    GitHub now supports SSH security keys
    Yubico announces general availability of next-generation Android and iOS SDKs
    Knowledge base

    Get answers to commonly asked questions


    Access our free and open source software tools.

    Developer program

    Learn, connect and integrate with Yubico technology