Attacking Physical Realizations of The Kish Scheme
While the idealized mathematical concept offers perfect information theoretic security, hacking attacks against the actual physical realization of the Kish scheme, utilizing non-ideal features, such as inaccuracies and stray resistive elements, can be exploited to extract transmitted key bits and the result is imperfect security that is still information theoretic. In 2005, Bergou proposed a method of finding such a weakness in the Kish scheme by utilizing the wire resistance. Then in 2006, Scheuer and Yariv analyzed Bergou's attack in detail. In 2010, Kish and Scheuer critically revisited the old Scheuer and Yariv results and showed that the original calculations of the Bergou-Scheuer-Yariv-attack were incorrect; moreover the new calculations indicate that the actual effect is about 1000 times weaker. Back in 2006, a defense against the Bergou-Yariv-Scheuer attack was mounted and then experimentally confirmed in 2007, where Mingesz et al. showed that it was possible to build a hardware realization communicating over two thousand kilometers with 99.98% fidelity and a maximum of a 0.19% leak to an eavesdropper. It also turns out that the sender can exactly calculate which of the bits have been detected by the eavesdropper—this was mathematically analyzed by Kish and Horvath in 2009.
Read more about this topic: Kish Cypher
Famous quotes containing the words attacking, physical, realizations and/or scheme:
“Compare the history of the novel to that of rock ‘n’ roll. Both started out a minority taste, became a mass taste, and then splintered into several subgenres. Both have been the typical cultural expressions of classes and epochs. Both started out aggressively fighting for their share of attention, novels attacking the drama, the tract, and the poem, rock attacking jazz and pop and rolling over classical music.”
—W. T. Lhamon, U.S. educator, critic. “Material Differences,” Deliberate Speed: The Origins of a Cultural Style in the American 1950s, Smithsonian (1990)
“Happy is that mother whose ability to help her children continues on from babyhood and manhood into maturity. Blessed is the son who need not leave his mother at the threshold of the world’s activities, but may always and everywhere have her blessing and her help. Thrice blessed are the son and the mother between whom there exists an association not only physical and affectional, but spiritual and intellectual, and broad and wise as is the scope of each being.”
—Lydia Hoyt Farmer (1842–1903)
“These marbles, the works of the dreamers and idealists of old, live on, leading and pointing to good. They are the works of visionaries and dreamers, but they are realizations of soul, the representations of the ideal. They are grand, beautiful, and true, and they speak with a voice that echoes through the ages. Governments have changed; empires have fallen; nations have passed away; but these mute marbles remain—the oracles of time, the perfection of art.”
—Herman Melville (1819–1891)
“In the scheme of our national government, the presidency is preeminently the people’s office.”
—Grover Cleveland (1837–1908)