3.11 Key Transfer to Crypto Accelerator

A key can be directly transferred to a crypto-engine, such as the HSM Lite, and thus be invisible by the software. The software only sends a command to initiate the transfer.

The following sequence must be followed:
  • The Get Key operation must be first performed with the secure output as destination (DRV_PUF_DATA_DEST_SO)
  • The transfer is performed to the crypto-engine if the operation is successful

A new transfer to any crypto-engine can be operated by repeating the same sequence.