Method for processing messages and message processing device

• US 20090133121A1
• Filed: 11/10/2008
• Published: 05/21/2009
• Est. Priority Date: 11/08/2007
• Status: Active Grant

• Current Assignee: Continental Automotive GmbH (Continental AG)
• Original Assignee: Continental Automotive GmbH (Continental AG)
• Inventors: Falk, Rainer, Kohlmayer, Florian
• Granted Patent: US 8,909,927 B2
• Time in Patent Office: Days
• US Class Current: 726/22
• CPC Class Codes: G06F 15/16 Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs coordinating program control therefor G06F9/52; in regulating and control system G05B
• CPC Class Codes: G08G 1/093 Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
• CPC Class Codes: G08G 1/0962 having an indicator mounted inside the vehicle, e.g. giving voice messages
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096791 where the origin of the information is another vehicle
• CPC Class Codes: H04L 51/226 Delivery according to priorities
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity
• CPC Class Codes: H04L 9/00 Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 3/5335 Message type or catagory, e.g. priority, indication
• CPC Class Codes: H04W 12/106 Packet or message integrity

Abstract

A message processing device for processing messages has at least one reception buffer, a message includes at least one authentication element and one message content. The message is received and stored in the reception buffer. A characteristic variable of a priority for security checking of the message is determined as a function of the message content. A processing sequence for further message processing for the security checking, taking into account the at least one authentication element of the messages in the reception buffer is defined and carried out as a function of the characteristic variable.

Claims

1. A method for processing messages in a message processing device having at least one reception buffer, the reception buffer storing a plurality of messages, wherein each message comprises at least one authentication element and a message content, the method comprising:

determining a priority for security checking each of the plurality of messages based at least in part on respective message content of each of the plurality of messages;

defining a processing sequence for security checking the plurality of messages based at least in part on the at least one respective authentication element and the priority for security checking of each of the plurality of messages stored in the reception buffer; and

performing the security checking of the messages in accordance with the defined processing sequence.

2. The method according to claim 1, wherein the priority for security checking for each of the plurality messages is based at least in part on the respective at least one authentication element of each message.

3. The method according to claim 1, wherein the priority for security checking of at least one of the plurality of messages is based at least in part on an imminent hazard, the imminent hazard being defined in a message content of at least one of the plurality of messages.

4. The method according to claim 1, further comprising modifying the priority for security checking, wherein priority for security checking of a recently received message has a higher priority for security checking than the priority for security checking of the other messages in the reception buffer.

5. The method according to claim 1, wherein the priority for security checking of at least one of the plurality of messages is based at least in part on a type of message content.

6. The method according to claim 1, wherein the priority for security checking of at least one of the plurality of messages is based at least in part on a relevance of the message content for a predefined geographic region.

7. The method according to claim 6, wherein the priority for security checking of the at least one of the plurality of messages is determined based at least in part on available information for the predefined geographic region.

8. The method according to claim 1, wherein the priority for security checking is based at least in part on sensor data of at least one sensor.

9. The method according to claim 1, wherein the priority for security checking is based at least in part on a difference between the message content of a first message stored in the reception buffer and the message contents of a remaining plurality of messages stored in the reception buffer.

10. The method according to claim 1, wherein the priority for security checking is based at least in part on a predefined transmitter type.

11. The method according to claim 10, wherein the priority for security checking for each of the plurality of messages stored in the buffer from a stationary transmitter has a higher priority than a message received from a mobile transmitter.

12. The method according to claim 1, further comprising rejecting the messages stored in the reception buffer based at least in part on a storage capacity of the reception buffer and the priority for security checking of the messages stored in the reception buffer.

13. The method according to claim 1, further comprising rejecting the messages stored in the reception buffer based at least in part on a capacity utilization of a first computing unit of the message processing device and the priority for security checking of the messages stored in the reception buffer

14. The method according to claim 1, wherein the security checking as a function of the at least one authentication element is performed in a reduced form.

15. The method according to claim 1, wherein the security module wherein the security checking is performed in at least one of a first computing unit or in a security module based at least in part on the priority for security checking for the message.

16. The method according to claim 1, further comprising:

determining the priority for message content of the plurality of messages in the respective buffers based at least in part on the message content of each of the plurality of messages, wherein

the processing sequence is based at least in part on the priority for security checking of the messages stored in the reception buffer and the priority for message content stored in the reception buffer.

17. The method according to claim 16, wherein the priority for message content is determined as a function of a difference between the message content of a first message stored in the receptive buffer and the message contents of a remaining plurality of messages stored in the reception buffer.

18. The method according to claim 16, wherein the priority for message content of the first message is determined as a function of the at least one authentication element of the first message.

19. The method according to claims 16, wherein the priority for message content of the is based at least in part on a predefined transmitter type.

20. The method according to claims 16, further comprising rejecting the messages stored in the reception buffer based at least in part on a storage capacity of the reception buffer and the priority for message content of the messages stored in the reception buffer.

21. The method according to claims 16, further comprising rejecting the messages stored in the reception buffer based at least in part on a capacity utilization of a first computing unit of the message processing device and the priority for message content of the messages stored in the reception buffer

22. The method according to claims 1, further comprising:

receiving a first message;

storing the first message in the reception buffer; and

determining a priority for security checking the first message based at least in part on a message content of the first message, wherein said step of defining a processing sequence for security checking the plurality of messages is performed after said step of storing the first message in the reception buffer.

23. A message processing device for processing messages, wherein each message comprises at least one authentication element and message content, wherein the message processing device comprises:

a receiver to receive the message;

at least one reception buffer to store the message;

a module to determine a priority for security checking of the message as a function of the message content; and

a module for defining a processing sequence for further message processing for the security checking based at least in part on the at least on the authentication element and the priority for security checking of the messages stored in the reception buffer; and

a module performing the security checking of the messages in accordance with the defined processing sequence.

24. The message processing device according to claim 23, further comprising:

at least one first computing unit; and

at least one security module with at least one further computing unit, wherein the security checking is performed in at least one of the first computing unit or in the security module based at least in part on the priority for security checking of the message.