The CRACEN peripheral is a hardware and software solution where software is delivered as libraries in Nordic device SDKs. Recommended usage of the CRACEN subsystem is to use the SDK library implementation available for the device. The CRACEN subsystem is documented for reference purpose only, please see section Disclaimer for more information.
Before the CRACEN peripheral can be used, it must be configured.
CRACEN is enabled using the ENABLE register. When CRACEN is enabled, it will erase the PKE data RAM by starting a zeroization process. When the PKBUSY field of the PK.STATUS is cleared, the zeroization operation is complete. The PKE engine is not available until the zeroization process has finished.
After CRACEN has been enabled, the CRACENCORE registers can be used.
Each hardware crypto operation category (module) must then be individually enabled. Note that ongoing crypto operations will complete even if the module is disabled during the operation.