axis_des_hardware_key Struct Reference

#include <des_io.h>

Collaboration diagram for axis_des_hardware_key:

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Detailed Description

defines and controls the use of a key slot in the axis 3DES hardware

The Axis hardware can cache multiple keys at once. To perform an operation a key needs to be loaded and or selected into a key channel. A pending crypto op needs both a key channel and an encryption channel. This structure is used to track the key channels

Data Fields
unsigned	lock
unsigned	loaded
unsigned long	age
unsigned char *	address
unsigned char *	register_address
unsigned	index
axis_des_key *	software_key

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Field Documentation

unsigned char* axis_des_hardware_key::address

address of hardware storage for key

unsigned long axis_des_hardware_key::age

needed for LRU algorithm

unsigned axis_des_hardware_key::index

number of hardware key gets converted into an offset into Axis device

unsigned axis_des_hardware_key::loaded

does the hardware match software

unsigned axis_des_hardware_key::lock

prevent removal mid operation

unsigned char* axis_des_hardware_key::register_address

address of control register for key

struct axis_des_key* axis_des_hardware_key::software_key

if the hardware is allocated to a software key we may need need to reclaim the hardware and so deallocate an idle software key

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The documentation for this struct was generated from the following file:

• des_io.h

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