ESP32-S3 workers share chaotic image encryption over Wi-Fi
Original title: Design and Evaluation of Secure Distributed Chaotic Image Encryption on ESP32-S3
Four workers cut runtime from 43.215 to 15.878 seconds, a 2.72 times speed-up, with entropy 7.999940 bits/byte.
A paper designs distributed chaotic image encryption across independent Wi-Fi-connected ESP32-S3 microcontrollers. A master assigns block-specific chaotic starting states so workers share one logical sequence, using reversible chaotic substitution. Device discovery is ECDSA-signed, and links use TLS 1.3 with mutual authentication. Tests with one, two, and four workers, plus failure reassignment and a rejected mismatched private key, are reported.
- Execution time fell from 43.215 to 15.878 seconds with four workers.
- Reported speed-up is 2.72 times.
- Shannon entropy of the ciphertext is 7.999940 bits/byte.
- Recovery checks used matching SHA-256 hashes and SSIM of 1.0.
- A mismatched private key was rejected during TLS authentication.
From the original article
1 min read at arxiv.orgThe limited computational resources of Internet of Things (IoT) devices present challenges for secure image processing. This paper presents a distributed chaotic image encryption system using independent Wi-Fi-connected ESP32-S3 microcontrollers.
By Mohammed Almozaini · arxiv.org
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