utrust Anchor SDK keyvisual
Software Development Kit (SDK)

u.trust SDK

The professional development kit for HSM solutions

utrust SDK
  • Suitable for Utimaco u.trust General Purpose HSM Se-Series
  • Custom firmware development based on algorithms and functions of choice
  • Full customizability ensuring complete flexibility
  • Test and validate the custom firmware with a simulator before the actual deployment
Key Benefits

Key Benefits


Powerful Development Kit

Create custom applications such as new or proprietary algorithms, key derivation functions, or complex protocols that run within the tamper-proof environment of the Utimaco Hardware Security Module.


Full Control

Develop custom firmware that remains under the developer’s complete control without the requirement for Utimaco’s review and approval.


Efficient Development

Benefit from a thorough description of internal programming interfaces (APIs) as well as full access to the HSM base firmware to implement a custom firmware module in minimal time.



The professional development kit for customized HSM solutions

Our SDK provides a professional development environment to implement firmware extensions for the u.trust General Purpose HSM Se-Series.

Although widely used cryptographic APIs such as PKCS #11 or JCE support many cryptographic algorithms and mechanisms, their use may be limited or impossible in certain use cases. For example, chip personalization and key injection often involve multiple cryptographic operations. Starting with the generation of unique keys or derivation of such keys from a secret master key using device-specific information, which includes assembling these keys and additional information into a well-defined personalization record to finally encrypting this record under a transport key.

Implementing such a sequence of operations using industry-standard cryptographic APIs results in multiple function calls may return intermediate and sensitive results outside the HSM and, in the worst-case scenario, failure due to the required key derivation function not being supported by the standardized cryptographic API.

The SDK enables the creation of customized applications, such as proprietary algorithms, key derivation functions, or complex protocols as firmware modules that run within the tamper-proof environment of the u.trust General Purpose HSM Se-Series. Standard programming languages and integration with common development environments and toolchains are supported.

With the SDK users can develop the custom firmware for low-to-high performance environments as well as for as-a-service offerings. 

Full Control

  • Allows complete control over firmware functionality with manufacturer-independent development
  • No review or approval by Utimaco is required
  • Provides a choice of either proprietary interface or PKCS #11 Vendor Defined Mechanism for application integration

Easy to use

  • The u.trust SDK uses standard programming languages and popular development environments
  • Provides sample code for firmware modules and host-side applications, including project files, and make files
  • Provides an HSM simulator for testing and debugging of new firmware in Windows or Linux development environment

Qualified Support

  • Developer training available
  • Support provided on the developer level via phone and email

Attractive pricing

  • Reduced price for HSMs in development environments
  • No additional costs for each delivered application
  • All supported cryptographic algorithms are included



Contact us

We look forward to answering your questions.

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