By a News Reporter-Staff News Editor at Information Technology Newsweekly -- Fresh data on Information Forensics and Security are presented in a new report. According to news reporting out of Kharagpur, India, by VerticalNews editors, research stated, "The transparency order is proposed as a parameter for the robustness of S-boxes to differential power analysis (DPA): lower transparency order implying more resistance. However, most cryptographically strong S-boxes have been found to have high transparency order."
Our news journalists obtained a quote from the research from the Indian Institute of Technology, "In this paper, we characterize transparency order for various classes of S-boxes by computing the upper and lower bounds of transparency order for both even and odd numbers of variables. We find high transparency order values in the class of S-boxes whose sum of autocorrelation spectra of the coordinate functions has zero value for a large number of vectors a. Also instead of propagation characteristics, autocorrelation spectra of the S-box function F are found to be stronger in deciding the transparency order. With this characterization, we performed a constrained random generation and search of a class of balanced 8 x 8 S-boxes with transparency order upper bounded by 7.8. The nonlinearity and absolute indicator values of global avalanche characteristics of the coordinate functions of the S-boxes are in the range (98, 110) and (48, 88), respectively."
According to the news editors, the research concluded: "A correlation analysis DPA on table look-up implementation of AES Rijndael S-box revealed the last round key in 700 power traces, while it took at least 1500 power traces with S-boxes from our proposed class."
For more information on this research see: Constrained Search for a Class of Good Bijective S-Boxes With Improved DPA Resistivity. IEEE Transactions on Information Forensics and Security, 2013;8(12):2154-2163. IEEE Transactions on Information Forensics and Security can be contacted at: Ieee-Inst Electrical Electronics Engineers Inc, 445 Hoes Lane, Piscataway, NJ 08855-4141, USA. (Institute of Electrical and Electronics Engineers - www.ieee.org/; IEEE Transactions on Information Forensics and Security - ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=10206)
Our news journalists report that additional information may be obtained by contacting B. Mazumdar, Indian Inst Technol, Dept. of Comp Sci & Engn, Kharagpur 721302, W Bengal, India. Additional authors for this research include D. Mukhopadhyay and I. Sengupta.
Keywords for this news article include: Asia, India, Kharagpur, Information Forensics and Security
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