The provided code is part of the TAURUS PROTECT product (https://www.taurusgroup.ch/en/products/protect).
It allows the HSM to create, sign and serialize Tezos transactions. It contains the following packages:
address: addresses creationserialization: transaction serializationreveal: support for Tezos reveal operationsreserve: proof of reservedelegate: delegate operations for Tezos
Please note that this code is provided for informational purposes only and is part of a bigger project, that is not available as open source code.