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Design and Simulation of a Dedicated Analog Circuit to Protect against Power Analysis Attack

Khoeini, Farzad | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46574 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Sharifkhani, Mohammad
  7. Abstract:
  8. With the rapid development of the communication technology, the demand for secure data transferring is inevitable. In this regard, all of secure systems such as Sim-Cards, Smart Cards, to name but a few, enjoy crypto hardware in order to encrypt data. The palpitating heart of these apparatuses, that is, processor, is based on well-known cryptographic algorithms such as AES, RSA, etc. In short, the security depends on the hidden key and in e. g., AES-128 bit, time to disclose the key is in order of 2128. Therefore, no computer can disclosure it in that this period is approximately equivalent to 1032 years in case of the processing computer runs on a 1GHz clock frequency, and a try-out of a key is tested per cycle. However, a Power Analysis Attacker can disclose the concealed key within a 16×28 processing time which is infinitesimal in comparison with the previous one.
    In the current thesis, a dedicated analog circuit was designed to distort the instantaneous power consumption profile of the smart cards so that attacking would become remarkably arduous. The Minimum Number to Disclosure (MTD), is the criterion which is adopted to compare the strength of the countermeasure. This countermeasure in addition to the platform of smart card (an AES s-box) were implemented in 0.18 µm process technology using Cadence Virtuoso. The simulation results demonstrate a striking proliferation in performance aspects, including complexity, MTD, and particularly ultra-low area overhead, analogous to the similar works. Meanwhile, we documented a step by step approach in order to extract instantaneous power consumption of a digital core. Modelsim, Design Compiler, SOC encounter, Prime Power, and Matlab, all of which, are the cad tools which we need to in this way
  9. Keywords:
  10. Smart Card ; Upgrading ; Analog ; Power Analysis

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