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Ultra-low power encryption engine for wireless implantable medical devices

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4 Author(s)
Saied Hosseini-Khayat ; Digital System Design Laboratory, Electrical Engineering Department, Ferdowsi University of Mashhad, Iran ; Parvin Bahmanyar ; Ehsan Rahiminezhad ; Mohamad Sawan

Wireless implantable medical devices are expected to perform cryptographic processing at an absolutely low level of power consumption. This paper presents the design of an ultra-low power ASIC core implementing the PRESENT encryption algorithm. To minimize power consumption, subthreshold CMOS logic is adopted. To implement robust combinational logic (S-Boxes) in PRESENT at subthreshold, a multiplexor-tree architecture based on CMOS transmission gates is proposed. Our post-layout simulations show that our PRESENT core consumes around 50 nW at 0.35V supply voltage at 25 kHz clock frequency, proving the feasibility of ultra-low power encryption.

Published in:

2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS)

Date of Conference:

5-8 Aug. 2012