A network Hardware Security Module (HSM) for organisations that have the highest security requirements. KeyperPLUS enforces zero trust through zero exposure protection of the most sensitive keys in government, Internet and industry. Entirely NIST FIPS 140-2 and Level 4 certified, KeyperPLUS provides security features beyond the competition:
Capabilities above Level 3 HSMs
- Multi-factor, identity-based authentication using N of M smartcards
- Active and passive tamper detection and response
- Temperature/Voltage Environmental failure protection
Capabilities above Level 4 (Physical) HSMs
- Common Criteria EAL4 evaluated operating software
- Formal model design and validation
Level 4 devices are designed for use in physically unprotected environments, and with additional defences against environmental attacks, including fluctuations outside normal operating ranges.
HSMs are at the root of trust in the generation, storage, distribution and controlled use of cryptographic keys within supply chain security infrastructures. Ultra’s experts support your security development teams with easy integration and support. This includes:
- Industry standard interface libraries: PKCS#11, MSCAPI, and CNG
- Platforms supported (to date): Windows Server 2012R2, 2016, 2019, 2022 (64 bit), RHE Linux 7.9 & 8.3 (64 bit)
- Third party interoperability: Entrust Authority Security Manager, Oracle database TDE, UniCERT, Microsoft ADCS, IIS, Bloombase Storesafe, EJBCA, ISC BIND, OpenDNSSEC, KnotDNS, OpenVPN, LibraSwan, OpenSSL, Java, Apache, Nginx
Built on a tradition of trust and customer support for over 15 years, KeyperPLUS includes a robust suite of interface libraries and algorithms at no extra charge.

Additional Capabilities
- Remote management application software provided, permitting run-time application key backup, audit log retrieval and firmware update
- N of M storage key backup via smartcard
- Encrypted application key backup on to smartcard(s) or USB
- Load Balancer software provides redundancy and improved overall system performance
- Rack-mount installation kit including redundant power supply available
KeyperPLUS remains the highest certified protection of public key infrastructures across industries worldwide: Internet, Banking, Financial Services, Insurance, Crypto Currency, Telecommunications, Governments, Manufacturing, Energy, IoT, Medical Devices, Aerospace and Defense and Transportation.
INTEGRATION SUPPORT
Ultra supports your project with our expert services in:
- Assistance with third-party integration
- Periodic replacement of internal battery
- Firmware and external management tools updates
- Implementation of bespoke algorithms and APIs