Hardware Security Modules (HSMs) are dedicated cryptographic processors that provide a secure environment for sensitive operations like key generation, storage, and cryptographic computations. Integrating an HSM with a RISC-V processor like Shakti significantly enhances the security posture of embedded devices, protecting against various software and hardware attacks.
This technical guide details the process and benefits of integrating an HSM with Shakti-based systems. We cover the communication protocols, API design for secure interactions, and best practices for leveraging HSM features such as secure boot, secure firmware updates, and protecting intellectual property. The integration ensures that critical cryptographic assets never leave the secure boundary of the HSM.
We provide insights into how our secure software stack, including rustBoot and our trusted HAL, works in conjunction with HSMs to create a robust Root of Trust. This article is essential reading for developers building high-security applications on Shakti processors.