CrypTech has created a trusted reference design for a hardware security module (HSM) that can be the basis for commercial products. It consists of software and configurable hardware (an FPGA) to perform a range of cryptographic operations. It is implemented as a card with an ARM processor and an FPGa. The first set of primitives is designed to support applications requiring high-assurance signing, such as DNSSEC. Additional cryptographic primitives can be added and configurations developed.”]
Source: https://www.crowdsupply.com/cryptech/open-hardware-security-module