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seen May 11 '13 at 8:25

Jun
20
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
Oh yes i get it . It's same as the other equation if you reduce the first two terms
Jun
20
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
While expanding this Equation to a single round of DES, the Output of the function f is XORed with plain text . How does this equation we're talking about hold true because plain text is of random content but Matsui says this equation holds true $X_{2}[7,8,24,29]\bigoplus P_H[7,18,24,29]\bigoplus P_{L}[15]=K_{1}[22]$
Jun
20
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
Oh My mistake . I's counting bits starting from left handside and was getting a differnt expression,should start counting from right hand side . Spent hours trying to find this .A bucketfull of thanks
Jun
20
awarded  Scholar
Jun
20
accepted Regarding matsui's Paper on Linear Cryptanalysis of DES
Jun
20
awarded  Editor
Jun
20
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
And please note that it's $NS_{5}(16,15)$ not $NS_{5}(16,5)$ . Typo . I've edited the Question
Jun
20
revised Regarding matsui's Paper on Linear Cryptanalysis of DES
deleted 1 characters in body
Jun
20
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
Exactly . But I'm looking for is how did he manage the 1 round linear approximation from the $NS_{5}(16,15)$ equation . He did not describe that in the paper and nor can i find it anywhere on internet
Jun
19
awarded  Student
Jun
17
comment Regarding matsui's Paper on Linear Cryptanalysis of DES
Please find the paper at www.cs.bgu.ac.il/~crp042/Handouts/Matsui.pdf
Jun
16
asked Regarding matsui's Paper on Linear Cryptanalysis of DES