International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
145 A Low Power Current Equalizer Against Power Analysis for 3-DES Crypto Engine in Bank IC Card
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Finance Bank IC Card is now utilized all over the world. countermeasures against power analysis for 3-DES Crypto engine (which is widely used in Bank IC Card now) is one of the key technology to design Bank IC Card. Considering the contactless interface of Bank IC Card, both high level security and low power consumption are essential to the designing of countermeasures against power analysis. There are already lots of methods against power analysis which will be summarized below, but they add higher overheads in area, power, or performance to unsecured encryption engines. In this work we present a Current Equalizer and a Control Logic Circuit to isolate the encryption activity of 3-DES Crypto Engine from external power supplies, to realize high level security with low power consumption.