Before the CRACEN peripheral can be used, it must be configured.
At reset, each hardware crypto operation category is disabled and must be individually enabled using the ENABLE register. To use CRACEN, the desired module must first be enabled. Ongoing crypto operations will complete even if the module is disabled during the operation.
Before transferring data to CRACENCORE, CRACEN must be enabled using ENABLE.
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.