Key Update Countermeasure for Correlation-Based Side-Channel Attacks

Abstract

Side-channel analysis is a non-invasive form of attack that reveals the secret key of the cryptographic circuit by analyzing the leaked physical information. The traditional brute-force and cryptanalysis attacks target the weakness in the encryption algorithm, whereas side-channel attacks use statistical models such as differential analysis and correlation analysis on the leaked information gained from the cryptographic device during the run-time. As a non-invasive and passive attack, the side-channel attack brings a lot of difficulties for detection and defense. In this work, we propose a key update scheme as a countermeasure for power and electromagnetic analysis-based attacks on the cryptographic device. The proposed countermeasure utilizes a secure coprocessor to provide secure key generation and storage in a trusted environment. The experimental results show that the proposed key update scheme can mitigate side-channel attacks significantly.

Key Update and Device Location of Internet of Things Based on Smart Contract

“…In order to ensure secure communication between intelligent devices, a variety of security algorithms have been proposed [2], and locationbased services have also been widely used. In order to achieve secure communication of intelligent devices, efficient secure channels are usually established between devices through symmetric encryption algorithm, and key negotiation and message verification are realized through public key encryption and public key signature algorithm [3,4].…”