Macronix International had three patents in cybersecurity during Q4 2023. The patents filed by Macronix International Co Ltd in Q4 2023 focus on memory devices with enhanced security features. These devices include physically unclonable function (PUF) circuits to generate unique codes for encoding data, as well as command decoders with security logic to detect and protect against unauthorized access to encrypted data. The technology also allows for efficient transfer of encrypted data and specific contexts, enhancing overall system security against potential attacks such as replay attacks. GlobalData’s report on Macronix International gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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Macronix International grant share with cybersecurity as a theme is 0% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Puf applications in memories (Patent ID: US20230386541A1)
The patent filed by Macronix International Co Ltd describes a memory device that includes a physically unclonable function (PUF) circuit to generate PUF codes, a deterministic random bit generator (DRBG) to generate pseudo-random numbers, and security logic circuitry to encode data using the PUF code and DRBG sequences for encryption operations. The memory device utilizes the PUF codes to initialize encryption keys and securely store data in memory cells, ensuring data protection and confidentiality.
Furthermore, the memory device incorporates Galois/Counter Mode (GCM) circuits for encryption, where plaintext data is encrypted to produce ciphertext based on input including the PUF code and additional authenticated data. The method outlined in the patent involves applying the PUF code to the DRBG for key generation, storing the PUF code in memory cells, and utilizing the generated pseudo-random numbers for encryption operations. By combining PUF codes, DRBG sequences, and encryption techniques, the memory device ensures secure data storage and transmission, enhancing overall data security and protection against unauthorized access or tampering.
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