MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202631036813 A) filed by Mr. Jyotiprakash Mishra, Bhubaneswar, Odisha, on March 26, for 'per-peripheral cryptographic session engine with hardware key rotation for risc-v iot system-on-chip.'
Inventor(s) include Mr. Jyotiprakash Mishra; Prof. Sanjay K. Sahay; Ms. Swati Mishra; and Mr. Aman Pathak.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "A per-peripheral cryptographic session engine (PCSE) for RISC-V IoT System-on-Chip architectures provides cryptographic protection for internal bus communication between the processor core and peripheral interfaces. The PCSE maintains individual session keys for each peripheral channel in a key-slot register file, enabling cryptographic isolation where compromise of one channel does not expose data from other channels. A lightweight PRINCE block cipher engine performs single-cycle encryption and decryption of bus transactions using per-channel keys and transaction counter tweaks. An autonomous key rotation finite state machine monitors transaction counts and derives new keys when configurable thresholds are reached, without processor involvement. Peripheral-side cryptographic stubs complete the encrypted communication channel. The invention addresses security gaps in existing architectures where internal bus traffic travels in plaintext, protecting against side-channel probing, fault injection, and debug port exploitation. The compact implementation occupies minimal die area and consumes negligible power, suitable for resource-constrained IoT applications including medical devices, smart meters, and automotive systems."
Disclaimer: Curated by HT Syndication.
