SMS4 is the Chinese national standard for WLAN, which also an ISO/IEC international standard. This paper presents a linear cryptanalysis on 25-round first time. Firstly, this adopts new statistic in cryptanalysis, aimed to compute distance between one cipher system and random permutation, can be used distinguish right key from wrong keys by different probability distributions they follow. Secon...

and System Identification techniques in Cryptanalysis.

In the present investigation, we developed a novel Feistel cipher by dividing the plaintext into a pair of matrices. In the process of encryption, we have used a bunch of keys and modular arithmetic addition. The avalanche effect shows that the cipher is a strong one. The cryptanalysis carried out on this cipher indicates that this cipher cannot be broken by any cryptanalytic attack and it can ...

SHA-3 Cryptographic Hash Algorithm Competition is a competition raised by NIST in response to recent advances of cryptanalysis, aiming at selecting new hash algorithm instead of SHA-2 like AES selection. The compression function of a hash function could be written in the form of multivariate boolean function. In this paper, we introduce our algorithms of evaluating boolean function and applied ...

Linear cryptanalysis is an attack that derives a linear approximation between bits of the plaintext, ciphertext and key. This global approximation is constructed from the linear approximation tables of the nonlinear mappings used by the cipher, usually the S-boxes, as in the case of DES. In this paper we will describe the distribution of these tables for bijective mappings (permutations), conce...

Polytopic cryptanalysis was introduced at EUROCRYPT 2016 as a cryptanalytic technique for low-data-complexity attacks on block ciphers. In this paper, we give an account of how the technique was developed, quickly go over the basic ideas and techniques of polytopic cryptanalysis, look into how the technique differs from previously existing cryptographic techniques, and discuss whether the attac...

Cryptanalysis, the art of breaking codes, has proven to be a combat multiplier throughout history. By reading encrypted enemy message traffic, commanders often gain immediate intelligence on the enemy's disposition, strengths and intent. During World War II, many allied successes were attributed to the advantages gained by cracking both the German Enigma and Japanese PURPLE cipher systems. Furt...

Signed difference approach was first introduced by Wang for finding collision in MD5. In this paper we introduce ternary difference approach and present it in 3 symbols. To show its application we combine ternary difference approach with conventional differential cryptanalysis and apply that to cryptanalysis the reduced round PRESENT. We also use ant colony technique to obtain the best differen...

Zero-correlation cryptanalysis uses linear approximations holding with probability exactly 1/2. In this paper, we reveal fundamental links of zero-correlation distinguishers to integral distinguishers and multidimensional linear distinguishers. We show that an integral implies zero-correlation linear approximations and that a zero-correlation linear distinguisher is actually a special case of m...

R. Rivest, A. Shamir and L. Adleman," A Method for Obtaining Digital Signatures and Public-Key Cryptosystems", Communications of the ACM, vol. 21, No. 2, pp. 120-126,1978. Wiener, M. : Cryptanalysis of short RSA secret exponents, IEEE Transactions on Information Theory 36, 553-558 (1990). Boneh, D. , Durfee, G. : Cryptanalysis of RSA with Private Key d Less Than N^0. 292, Advances in ...