E2E synchronization
The present disclosure is directed to systems and methods directed to improving the functions of a vehicle. Systems and methods are provided that provide a custom tool that autogenerates a set of software agents that allows a system to separate processing, transmission and receiving of messages to achieve better synchronization. The disclosure herein also provides a simplified method of key provisioning by designating one client as a server and assigning a symmetric key to every other client permanently provisioned between that client and the server. Systems and method are further provided that predict faults in a vehicle. Systems and methods are also provided that preserve data in the event of a system crash. Systems and methods are also provided in which an operating system of a vehicle detects the presence of a new peripheral and pulls the related interface file for that new peripheral. Further, a data synchronization solution is provided herein which provides optimized levels of synchronization.
1. A method comprising:
accessing a file that comprises information for decoding bus data, and
generating, based on the file, a plurality of software agents, wherein the software agents, when executed, are configured to:
receive a raw message via the bus,
within a single task:
unpack the raw message to generate a signal value,
generate a security protection value for the raw message, and
in response to a request for the signal value from an instance of an application executing based on instructions in a protected memory location, provide the instance of the application synchronous access to the signal value and the security protection value by:
transmitting, to a time server, a synchronization request comprising a first timestamp,
receiving a synchronization message from the time server, the synchronization message comprising (a) the first timestamp, (b) a second timestamp indicative of when the time server received the synchronization request, and (c) a third timestamp indicative of when the synchronization message was sent by the time server, and
causing to provide synchronous access to the signal value and the security protection value based on the synchronization message.
2. The method of claim 1 , wherein generating the plurality of software agents comprises:
generating a first set of instructions for execution from a first unsecure memory partition, wherein the first set of instructions, when executed, is configured to:
receive the raw message from the bus,
generating a second set of instructions for execution from a protected memory partition wherein the second set of instructions, when executed, is configured to:
unpack the raw message to generate the signal value,
perform verification to generate the security protection value for the raw message,
store the signal value and the security protection value, and
synchronously transmit the signal value and the security protection value to the instance of an application,
generating a third set of instructions for execution from a second unsecure memory partition wherein the third set of instructions, when executed, is configured to:
unpack the raw message to generate a signal value,
transmit the signal value to the instance of an application.
3. The method of claim 2 , wherein the bus is a Controller Area Network (CAN) bus.
4. The method of claim 3 , wherein the file is a database (DBC) file that comprises instructions for decoding CAN bus data from at least on sensor.
5. The method of claim 2 , wherein the first unsecure memory partition is a Quality Management (QM) partition.
6. The method of claim 2 , wherein the protected memory partition is an Automotive Safety Integrity Level (ASIL) partition.
7. The method of claim 2 , wherein generating the security protection value comprises generating an End-to-End (E2E) status.
8. A non-transitory computer readable medium having instructions encoded thereon, that when executed by control circuitry causes the control circuitry to:
access a file that comprises information for decoding bus data, and
generate, based on the file, a plurality of software agents, wherein the software agents, when executed, are configured to:
receive a raw message via the bus,
within a single task:
unpack the raw message to generate a signal value,
generate a security protection value for the raw message, and
in response to a request for the signal value from an instance of an application executing based on instructions in a protected memory location, provide the instance of the application synchronous access to the signal value and the security protection value by:
transmitting, to a time server, a synchronization request comprising a first timestamp,
receiving a synchronization message from the time server, the synchronization message comprising (a) the first timestamp, (b) a second timestamp indicative of when the time server received the synchronization request, and (c) a third timestamp indicative of when the synchronization message was sent by the time server, and
causing to provide synchronous access to the signal value and the security protection value based on the synchronization message.
9. The non-transitory computer readable medium of claim 8 , wherein the control circuitry is caused to generate the plurality of software agents by:
generating a first set of instructions for execution from a first unsecure memory partition, wherein the first set of instructions, when executed, is configured to:
receive the raw message from the bus,
generating a second set of instructions for execution from a protected memory partition wherein the second set of instructions, when executed, is configured to:
unpack the raw message to generate the signal value,
perform verification to generate the security protection value for the raw message,
store the signal value and the security protection value, and
synchronously transmit the signal value and the security protection value to the instance of an application,
generating a third set of instructions for execution from a second unsecure memory partition wherein the third set of instructions, when executed, is configured to:
unpack the raw message to generate a signal value,
transmit the signal value to the instance of an application.
10. The non-transitory computer readable medium of claim 9 , wherein the bus is a Controller Area Network (CAN) bus.
11. The non-transitory computer readable medium of claim 10 , wherein the file is a database (DBC) file that comprises instructions for decoding CAN bus data from at least on sensor.
12. The non-transitory computer readable medium of claim 9 , wherein the first unsecure memory partition is a Quality Management (QM) partition.
13. The non-transitory computer readable medium of claim 9 , wherein the protected memory partition is an Automotive Safety Integrity Level (ASIL) partition.
14. The non-transitory computer readable medium of claim 9 , wherein generating the security protection value comprises generating an End-to-End (E2E) status.
15. A vehicle system comprising:
a sensor connected to at least one bus, and
control circuitry configured to:
access a file that comprises information for decoding bus data received from the sensor via the bus, and
generate, based on the file, a plurality of software agents, wherein the software agents, when executed, are configured to:
receive a raw message via the bus,
within a single task:
unpack the raw message to generate a signal value,
generate a security protection value for the raw message, and
in response to a request for the signal value from an instance of an application executing based on instructions in a protected memory location, provide the instance of the application synchronous access to the signal value and the security protection value by:
transmitting, to a time server, a synchronization request comprising a first timestamp,
receiving a synchronization message from the time server, the synchronization message comprising (a) the first timestamp, (b) a second timestamp indicative of when the time server received the synchronization request, and (c) a third timestamp indicative of when the synchronization message was sent by the time server, and
causing to provide synchronous access to the signal value and the security protection value based on the synchronization message.
16. The vehicle system of claim 15 , wherein the control circuitry is configured to generate the plurality of software agents by:
generating a first set of instructions for execution from a first unsecure memory partition, wherein the first set of instructions, when executed, is configured to:
receive the raw message from the bus,
generating a second set of instructions for execution from a protected memory partition wherein the second set of instructions, when executed, is configured to:
unpack the raw message to generate the signal value,
perform verification to generate the security protection value for the raw message,
store the signal value and the security protection value, and
synchronously transmit the signal value and the security protection value to the instance of an application,
generating a third set of instructions for execution from a second unsecure memory partition wherein the third set of instructions, when executed, is configured to:
unpack the raw message to generate a signal value,
transmit the signal value to the instance of an application.
17. The vehicle system of claim 16 , wherein the bus is a Controller Area Network (CAN) bus.
18. The vehicle system of claim 17 , wherein the file is database (DBC) file that comprises instructions for decoding CAN bus data from at least one sensor.
19. The vehicle system of claim 16 , wherein the first unsecure memory partition is a Quality Management (QM) partition.
20. The vehicle system of claim 16 , wherein the protected memory partition is an Automotive Safety Integrity Level (ASIL) partition.