Francesco Regazzoni

Learn More
In recent years, hardware Trojans have drawn the attention of governments and industry as well as the scientific community. One of the main concerns is that integrated circuits, e.g., for military or critical-infrastructure applications, could be maliciously manipulated during the manufacturing process, which often takes place abroad. However, since there(More)
The market for RFID technology has grown rapidly over the past few years. Going along with the proliferation of RFID technology is an increasing demand for secure and privacy-preserving applications. In this context, RFID tags need to be protected against physical attacks such as Differential Power Analysis (DPA) and fault attacks. The main obstacles(More)
The continuous scaling of VLSI technology and the aggressive use of low power strategies (such as subthreshold voltage) make it possible to implement standard cryptographic primitives within the very limited circuit and power budget of RFID devices. On the other hand, such cryptographic implementations raise concerns regarding their vulnerability to both(More)
Malicious alterations of integrated circuits (ICs), introduced during either the design or fabrication process, are increasingly perceived as a serious concern by the global semiconductor industry. Such rogue alterations often take the form of a " hardware Trojan, " which may be activated from remote after the compromised chip or system has been deployed in(More)
MOS Current Mode Logic (MCML) is one of the most promising logic style to counteract power analysis attacks. Unfortunately, the static power consumption of MCML standard cells is significantly higher compared to equivalent functions implemented using static CMOS logic. As a result, the use of such a logic style is very limited in portable devices.(More)
The design of lightweight block ciphers has been a very active research topic over the last years. However, the lack of comparative source codes generally makes it hard to evaluate the extent to which different ciphers actually reach their low-cost goals, on different platforms. This paper reports on an initiative aimed to partially relax this issue. First,(More)
Power-based side channel attacks are a significant security risk, especially for embedded applications. To improve the security of such devices, protected logic styles have been proposed as an alternative to CMOS. However, they should only be used sparingly, since their area and power consumption are both significantly larger than for CMOS. We propose to(More)
Nowadays the need of speed in cipher and decipher operations is more important than in the past. This is due to the diffusion of real time applications, which fact involves the use of cryptography. Many co-processors for cryptography were studied and presented in the past, but only few works were addressed to the enhancement of the instruction set(More)
In this paper, we propose a new Authenticated Lightweight E ncryption algorithm coined ALE. The basic operation of ALE is the AES round transformation and the AES-128 key schedule. ALE is an online single-pass authenticated encryption algorithm that supports optional associated data. Its security relies on using nonces. We provide an optimized low-area(More)
This paper explores the resistance of MOS Current Mode Logic (MCML) against Differential Power Analysis (DPA) attacks. Circuits implemented in MCML, in fact, have unique characteristics both in terms of power consumption and the dependency of the power profile from the input signal pattern. Therefore, MCML is suitable to protect cryptographic hardware from(More)