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US 11,381,402 B2Granted
Systems and methods for secure communications in vehicle telematics systems
AssigneeCalAmp Corp.
InventorPeter Hergesheimer
Life of this patent
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Abstract
A vehicle telematics system is provided having secure communication capabilities between a vehicle telematics device and external computing devices. In one embodiment, the vehicle telematics device includes a processor; a memory coupled to the processor and storing a vehicle telematics application; and a security chip coupled to the processor and the memory, wherein the security chip is configured to support a Transport Layer Security (TLS) stack.
Claims12
A vehicle telematics device, comprising:
- a processor;
- a memory coupled to the processor and storing a vehicle telematics application;
- a security chip coupled to the processor and the memory, wherein the security chip has stored therein a private cryptographic key and an authentication certificate for the vehicle telematics device signed by a certificate authority and including a public cryptographic key corresponding to the private cryptographic key, wherein the security chip is configured to support a Transport Layer Security (TLS) stack;
- and
- a connector configured to (i) mate with a vehicle diagnostic connector of a vehicle, (ii) receive sensor data related to a characteristic of the vehicle over a vehicle data bus of the vehicle, and (iii) receive primary power for the vehicle telematics device from a vehicle power system of the vehicle,
- wherein the security chip is further configured to encrypt the sensor data using the private cryptographic key, establish a Transmission Control Protocol (TCP)/Transport Layer Security (TLS) security session with a customer server using the authentication certificate, and transmit the encrypted sensor data to the customer server using the TCP/TLS security session, and
- wherein the memory is sufficient to handle operations of the Transport Layer Security (TLS) stack, the memory including at least 30 kilobytes of random access memory (RAM) and 100 kilobytes of flash memory.
4 more elements
A vehicle telematics system, comprising:
- a vehicle having a vehicle diagnostic connector connected to a vehicle data bus and a plurality of vehicle sensors coupled to the vehicle data bus, wherein each vehicle sensor is configured to produce sensor data related to a characteristic of the vehicle and provide the sensor data to the vehicle data bus;
- a vehicle telematics device including:
- (i) a processor,
- (ii) a memory coupled to the processor and storing a vehicle telematics application,
- (iii) a security chip coupled to the processor and the memory, wherein the security chip has stored therein a private cryptographic key and an authentication certificate for the vehicle telematics device signed by a certificate authority and including a public cryptographic key corresponding to the private cryptographic key, wherein the security chip is configured to support a Transport Layer Security (TLS) stack, and
- (iv) a connector configured to mate with the vehicle diagnostic connector of the vehicle, receive the sensor data from the plurality of vehicle sensors over the vehicle data bus and receive primary power for the vehicle telematics device from a vehicle power system of the vehicle,
- wherein the security chip is further configured to encrypt the sensor data using the private cryptographic key, establish a Transmission Control Protocol (TCP)/Transport Layer Security (TLS) security session with a customer server using the authentication certificate, and transmit the encrypted sensor data to the customer server using the TCP/TLS security session;
- and
- wherein the memory is sufficient to handle operations of the Transport Layer Security (TLS) stack, the memory including at least 30 kilobytes of random access memory (RAM) and 100 kilobytes of flash memory.
6 more elements
Dependencies are inferred from the claim text.