Linear Cryptanalysis and Modified DES with Embedded Parity Check in the S-boxes

2016 ◽  
pp. 60-78
Author(s):  
Yuri Borissov ◽  
Peter Boyvalenkov ◽  
Robert Tsenkov
Keyword(s):  
Linear Cryptanalysis ◽  
Parity Check

scholarly journals On a Linear Cryptanalysis of a Family of Modified DES Ciphers with Even Weight S-Boxes

2016 ◽  
Vol 16 (4) ◽  
pp. 3-12 ◽  
Author(s):  
Yuri Borissov ◽  
Peter Boyvalenkov ◽  
Robert Tsenkov
Keyword(s):  
Data Encryption ◽  
General Situation ◽  
Linear Cryptanalysis ◽  
Parity Check ◽  
Data Encryption Standard ◽  
The Individual

Abstract We investigate the effect of inserting extra linearity in the Data Encryption Standard (DES) through appropriate nonsingular linear encodings of the output of the individual S-boxes. More specifically, we examine the general situation when the output of each S-box of the DESis precoded separately intoaproperly constructed copy of the inherent even-weight code of length 4. The study is focused on finding multi-round linear characteristics for thus modified DESciphers having maximal effectiveness. Depending on the particular encodings, it turns out that the effectiveness of interest may be larger but in most cases is smaller than that one for the original DESwith the same number of rounds. The latter means that the complexity of successful linear cryptanalysis against these ciphers will mainly increase comparing to the DESitself. The present research extends inanatural way our previous work[Linear Cryptanalysis and Modified DESwith Parity Check in the S-boxes, LNCS 9540 (2016), pp. 60-78].

Results of Linear Cryptanalysis Using Linear Sieve Methods

2009 ◽  
Vol E92-A (5) ◽  
pp. 1347-1355
Author(s):  
Yukiyasu TSUNOO ◽  
Hiroki NAKASHIMA ◽  
Hiroyasu KUBO ◽  
Teruo SAITO ◽  
Takeshi KAWABATA
Keyword(s):  
Linear Cryptanalysis ◽  
Sieve Methods

New rapid algorithm for detecting girth of low-density Parity-check codes

2013 ◽  
Vol 32 (11) ◽  
pp. 3100-3101
Author(s):  
Jiong-cheng LI ◽  
Gui-yu LI ◽  
Heng-hui XIAO ◽  
Hai-yi HUANG
Keyword(s):  
Low Density ◽  
Parity Check ◽  
Low Density Parity Check ◽  
Parity Check Codes

Immunity of Lightweight DES Algorithm (DESL) Against Linear Cryptanalysis Attack

2019 ◽  
Vol 28 (1) ◽  
pp. 381-387
Author(s):  
Bassam Aboshsha ◽  
Mohamed Dessouky ◽  
Rabie Ramadan ◽  
Ayman EL-SAYED
Keyword(s):  
Linear Cryptanalysis
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