US 2023/0275879 A1 · SECURE COMMUNICATION OF NETWORK TRAFFIC

Abstract

Techniques are disclosed relating to securely communicating traffic. In some embodiments, an apparatus includes a secure circuit storing keys usable to encrypt data communications between devices over a network The secure circuit is configured to store infomation that defines a set of usage criteria for the keys. The set of usage criteria specifies that a first key is dedicated to encrypting data being communicated from a first device to a second device. The secure circuit is configured to receive a request to encrypt a portion of a message with the fast key, the request indicating that the message is being sent from the first device to the second device, and to encrypt the portion of the message with the first key in response to determining that the set of usage criteria permits encryption with the first key for a message being sent from the first device to the second device.

Claims20

Dependent claims

An apparatus, comprising:

a first electronic control unit (ECU) included in a vehicle and configured to generate a message authentication code (MAC) for a data frame to be transmitted from the first ECU to a second ECU included in the vehicle;
and
a first secure circuit coupled to the first ECU, wherein the first secure circuit is configured to encrypt the MAC with a first encryption key;
and
wherein the first ECU is configured to transmit the data frame with the encrypted MAC included in the data frame.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/175,204Filed 27 Feb 2023

Priority

23 Sep 2016

Published

31 Aug 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04L 63/0442
Wherein the data content is protected, e.g. by encrypting or encapsulating the payload: wherein the sending and receiving network entities apply…
H04L 9/0877
Generation of secret information including derivation or calculation of cryptographic keys or passwords: using additional device, e.g. trusted…
H04L 9/0891
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: revocation or update of secret…
H04L 9/0897
Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage: involving additional devices, e.g. trusted…

Family

Application62/399,307Us provisional application · filed 23 Sep 2016

Application16/329,714Division · filed 28 Feb 2019

Application18/175,204Division

US 11,595,366 B2Related patent

US 2019/0207915 A1Published application

US 2023/0275879 A1This patent

From the US filing history. Foreign family members aren’t listed.

Secure communication of network traffic

Life of this patent

Secure communication of network traffic

Life of this patent

Abstract

Claims20