Random delays are commonly used as a countermeasure to hinder side channel analysis and fault attacks in embedded devices. This paper proposes a different manner of generating random delays, that increases the desynchronisation compared to random delays whose lengths are uniformly distributed. It is also shown that it is possible to reduce the time lost due to the inclusion of random delays, wh...

Random delays are commonly used as a countermeasure to inhibit side channel analysis and fault attacks in embedded devices. This paper proposes a different manner of generating random delays. The alternative proposed increases the desynchronisation compared to uniformly distributed random delays. It is also shown that it is possible to reduce the amount of time lost due to random delays, while ...

Random delays are often inserted in embedded software to protect against side-channel and fault attacks. At CHES 2009 a new method for generation of random delays was described that increases the attacker’s uncertainty about the position of sensitive operations. In this paper we show that the CHES 2009 method is less secure than claimed. We describe an improved method for random delay generatio...

ABSTRACT In this paper, the modeling and performance analysis of Networked Control System (NCS) subject to random delays and packet losses are discussed. Stochastic control theory is used for handling the random time delay and packet losses. Stochastic optimal strategy for networked control system (NCS) is obtained with random delays and packet losses when the system matrices are known. A new s...

In this paper, the state feedback H∞ control problem for networked control systems with quantization and random communication delays is discussed. The random delays from the sensor to the controller and from the controller to the actuator are considered. The quantizer considered here is dynamic and composed of an adjustable zoom parameter and a static quantizer. A novel quantized random delay m...