34 citations · 86 across the 18 of their papers we have counts for
16 papers · 1 filter
Analysis of Dynamic-Key LWE-Based Encrypted Control Systems for Asymptotic Stability and Numerical Safety
Jungjin Park, Kiminao Kogiso
This study analyzes dynamic-key Learning-with-Errors (LWE)-based encrypted state-feedback control systems with time-varying encoders and decoders. Using a Lyapunov-based approach,…
Dynamic-Key Post-Quantum Encrypted Control Against System Identification Attacks
Jungjin Park, Kiminao Kogiso
This study proposes post-quantum encrypted control systems based on dynamic-key Learning with Errors (LWE) encryption schemes. The proposed method develops update maps that simulta…
Quantization and Security Parameter Design for Overflow-Free Confidential FRIT
Jungjin Park, Osamu Kaneko, Kiminao Kogiso
This study proposes a systematic design procedure for determining the quantization gain and the security parameter in the Confidential Fictitious Reference Iterative Tuning (CFRIT)…
Malleability-Resistant Encrypted Control System with Disturbance Compensation and Real-Time Attack Detection
Naoki Aizawa, Keita Emura, Kiminao Kogiso
This study proposes an encrypted PID control system with a disturbance observer (DOB) using a keyed-homomorphic encryption (KHE) scheme, aiming to achieve control performance while…
Faithful and Privacy-Preserving Implementation of Average Consensus
Kaoru Teranishi, Kiminao Kogiso, Takashi Tanaka
We propose a protocol based on mechanism design theory and encrypted control to solve average consensus problems among rational and strategic agents while preserving their privacy.…
Secure Motion-Copying via Homomorphic Encryption
Haruki Takanashi, Kaoru Teranishi, Kiminao Kogiso
This study aims to develop an encrypted motion-copying system using homomorphic encryption for secure motion preservation and reproduction. A novel concept of encrypted motion-copy…
Encrypted Simultaneous Control of Joint Angle and Stiffness of Antagonistic Pneumatic Artificial Muscle Actuator by Polynomial Approximation
Yuta Takeda, Takaya Shin, Kaoru Teranishi +1
This study proposes an encrypted simultaneous control system for an antagonistic pneumatic artificial muscle (PAM) actuator toward developing a cybersecure and flexible actuator. F…
Optimal Security Parameter for Encrypted Control Systems Against Eavesdropper and Malicious Server
Kaoru Teranishi, Kiminao Kogiso
A sample identifying complexity and a sample deciphering time have been introduced in a previous study to capture an estimation error and a computation time of system identificatio…
Cyber-Secure Teleoperation With Encrypted Four-Channel Bilateral Control
Haruki Takanashi, Akane Kosugi, Kaoru Teranishi +3
This study developed an encrypted four-channel bilateral control system that enables posture synchronization and force feedback for leader and follower robot arms. The encrypted bi…
Optimal Controller and Security Parameter for Encrypted Control Systems Under Least Squares Identification
Kaoru Teranishi, Kiminao Kogiso
Encrypted control is a framework for the secure outsourcing of controller computation using homomorphic encryption that allows to perform arithmetic operations on encrypted data wi…
Towards Provably Secure Encrypted Control Using Homomorphic Encryption
Kaoru Teranishi, Kiminao Kogiso
Encrypted control is a promising method for the secure outsourcing of controller computation to a public cloud. However, a feasible method for security proofs of control has not ye…
Sample Identifying Complexity of Encrypted Control Systems Under Least Squares Identification
Kaoru Teranishi, Kiminao Kogiso
A sample identifying complexity has been introduced in the previous study to capture an adversary's estimation error of system identification. The complexity plays a crucial role i…
Input-Output History Feedback Controller for Encrypted Control with Leveled Fully Homomorphic Encryption
Kaoru Teranishi, Tomonori Sadamoto, Kiminao Kogiso
Protecting the parameters, states, and input/output signals of a dynamic controller is essential for securely outsourcing its computation to an untrusted third party. Although a fu…
Sensor-less Angle and Stiffness Control of Antagonistic PAM Actuator Using Reference Set
Takaya Shin, Kiminao Kogiso
This paper proposes a simultaneous control method for the angle and stiffness of the joint in an antagonistic pneumatic artificial muscle (PAM) actuator system using only pressure…
Designing Optimal Key Lengths and Control Laws for Encrypted Control Systems based on Sample Identifying Complexity and Deciphering Time
Kaoru Teranishi, Tomonori Sadamoto, Aranya Chakrabortty +1
In the state-of-the-art literature on cryptography and control theory, there has been no systematic methodology of constructing cyber-physical systems that can achieve desired cont…
Detailed Dynamic Model of Antagonistic PAM System and its Experimental Validation: Sensor-less Angle and Torque Control with UKF
Takaya Shin, Takumi Ibayashi, Kiminao Kogiso
This study proposes a detailed nonlinear mathematical model of an antagonistic pneumatic artificial muscle (PAM) actuator system for estimating the joint angle and torque using an…