Visible to the public Biblio

Filters: Author is Ahmadi, A.  [Clear All Filters]
2017-04-20
Takalo, H., Ahmadi, A., Mirhassani, M., Ahmadi, M..  2016.  Analog cellular neural network for application in physical unclonable functions. 2016 IEEE International Symposium on Circuits and Systems (ISCAS). :2635–2638.
In this paper an analog cellular neural network is proposed with application in physical unclonable function design. Dynamical behavior of the circuit and its high sensitivity to the process variation can be exploited in a challenge-response security system. The proposed circuit can be used as unclonable core module in the secure systems for applications such as device identification/authentication and secret key generation. The proposed circuit is designed and simulated in 45-nm bulk CMOS technology. Monte Carlo simulation for this circuit, results in unpolarized Gaussian-shaped distribution for Hamming Distance between 4005 100-bit PUF instances.
2017-03-08
Nemati, A., Feizi, S., Ahmadi, A., Haghiri, S., Ahmadi, M., Alirezaee, S..  2015.  An efficient hardware implementation of few lightweight block cipher. 2015 The International Symposium on Artificial Intelligence and Signal Processing (AISP). :273–278.

Radio-frequency identification (RFID) are becoming a part of our everyday life with a wide range of applications such as labeling products and supply chain management and etc. These smart and tiny devices have extremely constrained resources in terms of area, computational abilities, memory, and power. At the same time, security and privacy issues remain as an important problem, thus with the large deployment of low resource devices, increasing need to provide security and privacy among such devices, has arisen. Resource-efficient cryptographic incipient become basic for realizing both security and efficiency in constrained environments and embedded systems like RFID tags and sensor nodes. Among those primitives, lightweight block cipher plays a significant role as a building block for security systems. In 2014 Manoj Kumar et al proposed a new Lightweight block cipher named as FeW, which are suitable for extremely constrained environments and embedded systems. In this paper, we simulate and synthesize the FeW block cipher. Implementation results of the FeW cryptography algorithm on a FPGA are presented. The design target is efficiency of area and cost.