Design and Implementation of a New Real-Time Frequency Sensor Used as Hardware Countermeasure

Raúl Jiménez-Naharro, Juan Gómez-Galán, Manuel Sánchez-Raya, Fernando Gómez-Bravo, Manuel Pedro-Carrasco
2013 Sensors  
A new digital countermeasure against attacks related to the clock frequency is presented. This countermeasure, known as frequency sensor, consists of a local oscillator, a transition detector, a measurement element and an output block. The countermeasure has been designed using a full-custom technique implemented in an Application-Specific Integrated Circuit (ASIC), and the implementation has been verified and characterized with an integrated design using a 0.35 µm standard Complementary Metal
more » ... xide Semiconductor (CMOS) technology (Very Large Scale Implementation-VLSI implementation). The proposed solution is configurable in resolution time and allowed range of period, achieving a minimum resolution time of only 1.91 ns and an initialization time of 5.84 ns. The proposed VLSI implementation shows better results than other solutions, such as digital ones based on semi-custom techniques and analog ones based on band pass filters, all design parameters considered. Finally, a counter has been used to verify the good performance of the countermeasure in avoiding the success of an attack.
doi:10.3390/s130911709 pmid:24008285 pmcid:PMC3821354 fatcat:hcdk3ne7kng5vgpk5uajtsfx74