Infineon Technologies had 41 patents in cybersecurity during Q2 2024. The patents filed by Infineon Technologies AG in Q2 2024 address issues in secure in-vehicle communication systems by pre-calculating and storing subkeys to reduce processing overhead. They also involve techniques for generating tunnel frames with message authentication codes, cryptographic operations for secure zones, and data processing devices using shares and logic functions. Additionally, a method for authentication using cryptographic functions in IC devices is described. GlobalData’s report on Infineon Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Infineon Technologies had no grants in cybersecurity as a theme in Q2 2024.
Recent Patents
Application: Secure communications using pre-generated subkeys (Patent ID: US20240214370A1)
The patent filed by Infineon Technologies AG addresses the issue of subkey generation in secure in-vehicle communication systems by pre-calculating and storing subkeys using a predetermined function. This approach reduces processing overhead and latency associated with generating subkeys on-the-fly for each encoded data transmission/reception, improving efficiency in managing subkey generation. The electronic control unit (ECU) described in the patent includes an encoder that generates and stores subkey sets based on a key derivation function using secret keys and predetermined encoding values, with each encoding value offset from the others by a predetermined offset value. The ECU also features a data interface to receive nonce values for encoded data messages, allowing the encoder to select the appropriate subkey set for message transmission based on matching encoding values.
Furthermore, the ECU can operate in accordance with various communication protocols such as CAN, CAN FD, CAN XL, or Ethernet, and can utilize encryption modes like AES-GCM-SIV or SM4 cipher. The patent details the storage of subkey sets in a cache based on encoding values, the use of predetermined offset values generated by a function, and the inclusion of freshness values and secure channel indicators in nonce values for message encoding. Additionally, the encoder can delete subkey sets after use and generate further subkey sets based on different encoding values, selecting the appropriate set based on the destination's secure zone. The decoder in the ECU performs the reverse process for received encoded data messages, utilizing the stored subkey sets for decoding based on matching encoding values in the nonce values.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
