Advanced Differential-Style Cryptanalysis of the NSA's Skipjack Block Cipher

Kim, Jongsung; Phan, Raphaël C.‐W.

doi:10.1080/01611190802653228

Cited by 46 publications

(31 citation statements)

References 34 publications

(57 reference statements)

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“…It is clear from the table that the LAP of the proposed S-boxes is low, while their NL and AC are high enough to resist the linear attacks efficiently. Note that the average value of LAP of the proposed S-boxes is 0.1445 which is less than that of the S-boxes in [21,22,27,31], while their average NL and AC are 106 and 254 which are higher than that of [20,26,27,29,[31][32][33] and [28,30,31], respectively. This implies that the proposed method is capable of generating S-boxes with high security against linear attacks than some of the listed S-boxes.…”

Section: Linear Attacksmentioning

confidence: 83%

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An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization

Azam

Hayat

Ullah

2018

Security and Communication Networks

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Elliptic curves (ECs) are considered as one of the highly secure structures against modern computational attacks. In this paper, we present an efficient method based on an ordered isomorphic EC for the generation of a large number of distinct, mutually uncorrelated, and cryptographically strong injective S-boxes. The proposed scheme is characterized in terms of time complexity and the number of the distinct S-boxes. Furthermore, rigorous analysis and comparison of the newly developed method with some of the existing methods are conducted. Experimental results reveal that the newly developed scheme can efficiently generate a large number of distinct, uncorrelated, and secure S-boxes when compared with some of the well-known existing schemes.

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Section: Linear Attacksmentioning

confidence: 83%

“…We generated the S-boxes Tables 2-4, respectively. A comparison of the experimental results with the strongest S-boxes generated by the algorithms in [20][21][22][26][27][28][29][30][31][32][33][34] is also conducted in this section.…”

Section: Security Analysismentioning

confidence: 99%

An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization

Azam

Hayat

Ullah

2018

Security and Communication Networks

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“…In archetypal and modern cryptography S-boxes are typically constructed over finite Galois fields F 2 m , for 2 ≤ m ≤ 8, such as AES S-box, residue prime S-box Hussain et al (2011), Gray S-box Tran et al (2008), APA S-box Cui and Cao (2007), S 8 AES S-box, Skipjack S-box Kim and Phan (2009), Xyi S-box Yi et al (2002) and perfect nonlinear S-box Nyberg (1991).…”

Section: Introductionmentioning

confidence: 99%

Design of new $$4\times 4$$ 4 × 4 S-box from finite commutative chain rings

2015

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Substitution boxes (S-boxes) are the fundamental mechanisms in symmetric key cryptosystems. These S-boxes guarantee that the cryptosystem is cryptographically secure and make them nonlinear. The S-boxes used in conventional and modern cryptography are mostly constructed over finite Galois field extensions of binary Field F 2 . We have presented a novel construction scheme of S-boxes which is based on the elements of subgroups of multiplicative groups of units of the commutative finite chain rings of type F 2 [u] u k , where 2 ≤ k ≤ 8. Majority logic criterion (MLC) is applied on the apprehended S-boxes owing to, checked their strength.

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“…They have been used to analyze many ciphers and should be taken into consideration for designing a new cipher scheme [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Security Cryptanalysis of NUX for the Internet of Things

Liu

Zhao

2019

Security and Communication Networks

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In order to adopt the restricted environment, such as radio frequency identification technology or sensor networking, which are the important components of the Internet of Things, lightweight block ciphers are designed. NUX is a 31-round iterative ultralightweight cipher proposed by Bansod et al. In this paper, we examine the resistance of NUX to differential and linear analysis and search for 1~31-round differential characteristics and linear approximations. In design specification, authors claimed that 25-round NUX is resistant to differential and linear attack. However, we can successfully perform 29-round differential attack on NUX with the 22-round differential characteristic found in this paper, which is 4 rounds more than the limitation given by authors. Furthermore, we present the key recovery attack on 22-round NUX using a 19-round linear approximation determined in this paper. Besides, distinguishing attack, whose distinguisher is built utilizing the property of differential propagation through NUX, is implemented on full NUX with data complexity 8.

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Advanced Differential-Style Cryptanalysis of the NSA's Skipjack Block Cipher

Cited by 46 publications

References 34 publications

An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization

An Injective S-Box Design Scheme over an Ordered Isomorphic Elliptic Curve and Its Characterization

Design of new $$4\times 4$$ 4 × 4 S-box from finite commutative chain rings

Security Cryptanalysis of NUX for the Internet of Things

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