کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
470504 698507 2013 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Security evaluation of MISTY structure with SPN round function
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
پیش نمایش صفحه اول مقاله
Security evaluation of MISTY structure with SPN round function
چکیده انگلیسی

This paper deals with the security of MISTY structure with SPN round function. We study the lower bound of the number of active s-boxes for differential and linear characteristics of such block cipher construction. Previous result shows that the differential bound is consistent with the case of Feistel structure with SPN round function, yet the situation changes when considering the linear bound. We carefully revisit such issue, and prove that the same bound in fact could be obtained for linear characteristic. This result combined with the previous one thus demonstrates a similar practical secure level for both Feistel and MISTY structures. Besides, we also discuss the resistance of MISTY structure with SPN round function against other kinds of cryptanalytic approaches including the integral cryptanalysis and impossible differential cryptanalysis. We confirm the existence of 6-round integral distinguishers when the linear transformation of the round function employs a binary matrix (i.e., the element in the matrix is either 0 or 1), and briefly describe how to characterize 5/6/75/6/7-round impossible differentials through the matrix-based method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Mathematics with Applications - Volume 65, Issue 9, May 2013, Pages 1264–1279
نویسندگان
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