Work

Serialization and Transmission of CKKS Ciphertexts over Inter Integrated Circuit (I2C) Bus

Year: 2026

Type: article

Abstract: Data in use is primarily stored in volatile memory, such as random access memory (RAM), memory caches, and registers when they have been decrypted for processing. These data are vulnerable to exploitation or encryption keys being stolen from the devices. In most traditional architectures, the central processing unit (CPU) and main memory work together because they share a common communication bus, so the same data moves within their circuits. The internal bus channel connects all the internal components of a computer, such as the registers, CPU and memory, to the motherboard. Although encryption can protect data during transmission, most conventional cryptographic schemes will required that the ciphertext is decrypted before processing of data. Fully homomorphic encryption (FHE) provides an alternative by allowing computation on encrypted data. This study investigates the process of serializing and transmitting FHE ciphertexts through I2C channels on resource constrained microcontrollers. Keywords: Fully Homomorphic Encryption, OpenFHE, CKKS, AES, I2C, STM32F411CEU6, Embedded systems, IoT Security.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24030266

Authors: Ame Funmilayo Udobong, Benjamin Okike, Olumide Owolabi, Hashim Bisallah

Language: English

Topic: Cryptography and Data Security

Subfield: Computer Networks and Communications

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7225458465

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