From theory to practice of private circuit: A cautionary note

摘要: Private circuits, from their publication, have been really popular among the researchers. They also form basis for provable masking schemes. There are several works which try to improve results of bit-level private circuits based on 2-input gates combinational logic. However, strangely, no practical side-channel analysis has presented so far, is focus present paper. In this paper, we tried identify ‘ambush’ or hidden dangers in implementation can compromise its security scenarios. We implemented block cipher SIMON with circuit and performed it. The result shows that, practice, there significant amount information leakage be exploited by adversaries. Some comes optimization applied standard CAD tools, if they restructure netlists. But even immutable netlists, caused a kind glitch known as early evaluation. Lastly, demonstrate how translate theoretically secure practically added overhead, clocking every gate. Leakage detection tests attest considered variants circuits.