YubiHSM 2 Software Development Kit (SDK)

YubiHSM 2 SDK can be downloaded from https://developers.yubico.com/YubiHSM2/Releases/ and contains the following tools and libraries to interface with YubiHSM 2.

Resource Description
bin/libcrypto-3.dll or lib/libcrypto-3.dylib Pre-built OpenSSL (Windows and MacOS only)
bin/yubihsm-setup Deployment tool for YubiHSM 2
bin/yubihsm-wrap
A tool to create wrapped importable
objects offline
bin/yubihsm-connector
The Connector, a tool for providing a
common interface to the device
bin/yubihsm-shell
The shell, a REPL-style tool for
interacting with YubiHSM 2 (and the
Connector) See Note (1)
include/pkcs11/pkcs11.h
Common and standard PKCS#11 functions and
constants definitions
include/pkcs11/pkcs11y.h
Yubico-specific PKCS#11 functions and
constants definitions
include/yubihsm.h Library functions and constants definitions
lib/libyubihsm.{dylib,so}
or bin/libyubihsm.dll
Library binary to interact with YubiHSM 2
lib/yubihsm_pkcs11.{dylib,so}
or bin/yubihsm_pkcs11.dll
PKCS#11 module to interact with YubiHSM 2
python-noarch/* Python implementation of the library
yubihsm-cngprovider-windows-
amd64.msi
Installer for CNG/KSP for Windows ADCS
(Windows only)
yubihsm-connector-windows-
amd64.msi
Installer for the Connector (Windows only)

Details on these tools and libraries can be found in the later sections of this document.

System Requirements

The YubiHSM 2 SDK is built and provided for the following operating systems.

Operating System Version Architecture
Debian 10 Buster amd64
Debian 11 Bullseye amd64
Debian 12 Bookworm amd64
Fedora 39 amd64
Fedora 40 amd64
Ubuntu 14.04 Trusty Tahr amd64
Ubuntu 16.04 Xenial Xerus amd64
Ubuntu 18.04 Bionic Beaver amd64
Ubuntu 20.04 Focal Fossa amd64
Ubuntu 22.04 Jammy Jellyfish amd64
Ubuntu 24.04 Noble Numbat amd64
Windows Server 2019 x64, x86
Windows Server 2022 x64, x86
macOS 14 Sonoma amd64, arm64, universal