Truncated Differential Attacks on 8-Round CRYPTON

2004 ◽  
pp. 446-456 ◽  
Author(s):  
Jongsung Kim ◽  
Seokhie Hong ◽  
Sangjin Lee ◽  
Junghwan Song ◽  
Hyungjin Yang
Keyword(s):  
Differential Attacks ◽  
Truncated Differential

scholarly journals Towards Provable Security of Rijndael-Like Spn Ciphers Against Differential Attacks

2012 ◽  
Vol 53 (1) ◽  
pp. 189-199
Author(s):  
Victor Ruzhentsev ◽  
Victor Dolgov
Keyword(s):  
Provable Security ◽  
Differential Attack ◽  
Differential Attacks ◽  
Truncated Differential

ABSTRACT The strength of Rijndael-like ciphers to the truncated differential attack is considered. Theorems about the absence of effective truncated (byte) differential characteristics and effective truncated (byte) differentials for ciphers with sufficient number of rounds are proved.

On optimal size in truncated differential attacks

2015 ◽  
Vol 52 (2) ◽  
pp. 246-254 ◽  
Author(s):  
Nicolas T. Courtois ◽  
Theodosis Mourouzis ◽  
Anna Grocholewska-Czuryło ◽  
Jean-Jacques Quisquater
Keyword(s):  
Block Cipher ◽  
Ad Hoc ◽  
Differential Cryptanalysis ◽  
Optimal Size ◽  
Potential Space ◽  
Differential Attack ◽  
Pass Through ◽  
Differential Attacks ◽  
Differential Properties ◽  
Truncated Differential

Differential Cryptanalysis (DC) is one of the oldest known attacks on block ciphers. DC is based on tracking of changes in the differences between two messages as they pass through the consecutive rounds of encryption. However DC remains very poorly understood. In his textbook written in the late 1990s Schneier wrote that against differential cryptanalysis, GOST is “probably stronger than DES”. In fact Knudsen have soon proposed more powerful advanced differential attacks however the potential space of such attacks is truly immense. To this day there is no method which allows to evaluate the security of a cipher against such attacks in a systematic way. Instead, attacks are designed and improved in ad-hoc ways with heuristics [6–13,21]. The best differential attack known has time complexity of 2179 [13]. In this paper we show that for a given block cipher there exists an optimal size for advanced differential properties. This new understanding allows to considerably reduce the space to be searched for “good” truncated differential properties suitable for an attack.

MILP-Aided Security Evaluation of Differential Attacks on KCipher-2

2021 ◽  
Vol E104.A (1) ◽  
pp. 203-212
Author(s):  
Jin HOKI ◽  
Kosei SAKAMOTO ◽  
Fukang LIU ◽  
Kazuhiko MINEMATSU ◽  
Takanori ISOBE
Keyword(s):  
Security Evaluation ◽  
Differential Attacks

Differential attacks: using alternative operations

2018 ◽  
Vol 87 (2-3) ◽  
pp. 225-247 ◽  
Author(s):  
Roberto Civino ◽  
Céline Blondeau ◽  
Massimiliano Sala
Keyword(s):  
Differential Attacks ◽  
Alternative Operations

scholarly journals Different Types of Attacks on Block Ciphers

2020 ◽  
Vol 9 (3) ◽  
pp. 28-31
Keyword(s):  
Block Cipher ◽  
Classical Method ◽  
System Of Nonlinear Equations ◽  
Algebraic Attack ◽  
Differential Attack ◽  
Different Types ◽  
Important Challenge ◽  
Impossible Differential ◽  
Linear Differential ◽  
Truncated Differential

Cryptanalysis is a very important challenge that faces cryptographers. It has several types that should be well studied by cryptographers to be able to design cryptosystem more secure and able to resist any type of attacks. This paper introduces six types of attacks: Linear, Differential , Linear-Differential, Truncated differential Impossible differential attack and Algebraic attacks. In this paper, algebraic attack is used to formulate the substitution box(S-box) of a block cipher to system of nonlinear equations and solve this system by using a classical method called Grobner  Bases . By Solving these equations, we made algebraic attack on S-box.

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