Detailed Description

AESCBC driver implementation for the Low Power F3 devices.

==========================================================================

Hardware Accelerator

The Low Power F3 family of devices has dedicated hardware accelerators. CC23XX devices have one dedicated accelerator whereas CC27XX devices have two (Primary and Secondary). Combined they can perform AES encryption operations with 128-bit, 192-bit and 256-bit keys. Only one operation can be carried out on the accelerator at a time. Mutual exclusion is implemented at the driver level and coordinated between all drivers relying on the accelerator. It is transparent to the application and only noted to ensure sensible access timeouts are set.

Implementation Limitations

Decryption is not supported since the AES HW only supports encryption.
Only plaintext CryptoKeys are supported by this implementation.

Runtime Parameter Validation

The driver implementation does not perform runtime checks for most input parameters. Only values that are likely to have a stochastic element to them are checked (such as whether a driver is already open). Higher input parameter validation coverage is achieved by turning on assertions when compiling the driver.

#include <stdbool.h>
#include <stdint.h>
#include <ti/drivers/AESCBC.h>
#include <ti/drivers/cryptoutils/aes/AESCommonLPF3.h>
#include <ti/drivers/cryptoutils/sharedresources/CryptoResourceLPF3.h>
#include <ti/devices/DeviceFamily.h>
#include <DeviceFamily_constructPath(driverlib/aes.h)>

Include dependency graph for AESCBCLPF3.h: