Security evaluation of misty structure with spn round function. Ruilin li, hengli, chao li, andbing sun improving keyrecovery to 784 and 799 rounds oftrivium using optimized cubeattacks 502 pierrealain fouqueandthomas vannet near collision attack on the grain vl stream cipher 518 bin zhang, zhenqi li, dengguo feng, and dongdai lin automatedcryptanalysis exhaustingdemirciselcuk meetinthemiddle attacks. Cite this publication ruilin li at national university of defense technology ruilin li. She received her advanced postgraduate diploma from the royal danish academy of music under the guidance of professor geir draugsvoll. Ruilin li is former board member at shanghai wingsung inv mgmt co ltd. Square attack on block ciphers with low algebraic degree. Ruilin li, lei cheng, qingju wang, hoda alkhzaimi, and chao li. List of computer science publications by ruilin li. This paper presented the smallest hardware architecture of the aria block cipher algorithm. Ruilin li, hengli, chao li, andbing sun improving keyrecovery to 784 and 799 rounds oftrivium using optimized cubeattacks 502. The chinese journal of electronics publishes papers in the following areas. All content in this area was uploaded by ruilin li.
Cryptanalysis ofwidea 39 gaetan leurent invited talk. I am trying to design my own homepage and using this readonly template. Currently, most methods for finding impossible differentials are based on the missinthemiddle technique and. Although relations among other cryptanalytic approaches have been investigated, the link between these two methods has been missing.
The motivation of curating a list of cryptography and cryptanalysis related tools was born from desire to have a centralized point where all such tools can be found. Articles covering either theoretical aspects or practical application are encouraged. The gmr2 cipher is a type of stream cipher currently being used in some inmarsat satellite phones. Journal of systems and software vol 84, issue 7, pages 1071. Cryptanalysis of the simon family of block ciphers. Information security and privacy springer for research. Institute of software, chinese academy of sciences, beijing, 100190, china.
Ruilin li senior associate general counsel at university of minnesota. Impossible differential cryptanalysis of spn ciphers. The chinese journal of electronics publishes highquality research papers on advances in electronics interdisciplinary studies must emphasize the field of electronics. Practical and provable security against differential and.
C impossible differential cryptanalysis of spn ciphers. Sign up cryptanalysis of an image scrambling encryption algorithm isea. A realtime inversion attack on the gmr2 cipher used in the satellite. Clefia is a 128bit block cipher proposed by sony corporation in fse 2007. A realtime inversion attack on the gmr2 cipherused in the. For gfnlfsr containing n subblocks, we find an n2round integral distinguisher by algebraic methods and further use this integral to. Citeseerx cryptanalysis of a generalized unbalanced.
A low data complexity attack on the gmr2 cipher used in the satellite phones. Newest linearcryptanalysis questions cryptography stack. Communication complexity of conditional disclosure of. Practical and provable security against differential and linear cryptanalysis for substitution. In this subsection, we present the impossible differential cryptanalysis of round clefia128 with the whitening layers. Notice that we move wk 1 and wk 3 and place them at the proper positions as shown in fig. We point out that a square distinguisher exists if and only if the degree of the polynomial function between nbit input which is active and nbit output which is balanced is. Using the previous 9round impossible differentials, the redundancy in the key schedule and the earlyabort technique, we present the first successful impossible differential cryptanalysis of round clefia128 in this paper. In this paper, a platform named peigen is presented to evaluate security, find efficient software hardware implementations, and generate cryptographic sboxes. Currently, most methods for finding impossible differentials are based on the missinthe. Links among impossible differential, integral and zero correlation linear cryptanalysis.
This is just a disambiguation page, and is not intended to be the bibliography of an actual person. Author links open overlay panelruilinli chaolijinshusubingsun. Communication complexity of conditional disclosure of secrets and attributebased encryption. Probability distribution and bias of t1 t2 suppose z t 1 t2 is a pair of binary random variables, a a 1 a2 be a pair of bits and. By bing sun, zhiqiang liu, vincent rijmen, ruilin li, lei cheng, qingju wang, hoda alkhzaimi and chao li. And the algebraic method can also be used to determine the property of a balanced set after passed. Lets consider the linear cryptanalysis over the first 15 rounds of des des has 16 rounds. This paper presents an improved impossible differential attack on the new block cipher clefia which is proposed by sony corporation at fse 2007. Ruilin li national university of defense technology.
Cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. Partition calculus classification combinatorics cryptanalysis cryptography cryptosystems differential probability finite fields hash function insecure systems key encryption network security proxyreencryption. She took her master and bachelor degree at tianjin conservatory of music. The number of rounds is 12, 14, or 16, depending on the key size. Proceedings of the 7th international workshop on fast software encryption. Differential cryptanalysis 1 dc and linear cryptanalysis 2 lc are the two most. Program state sensitive parallel fuzzing for real world software. As two important cryptanalytic methods, impossible differential cryptanalysis and integral cryptanalysis have attracted much attention in recent years. Fast correlation attacks on grainlike small state stream ciphers and cryptanalysis of plantlet, fruitv2 and fruit80. The repository provides demo programs for implementations of basic machine learning algorithms by python 3. Advances in cryptology eurocrypt 2016 35th annual international conference on the theory and applications of cryptographic techniques, vienna, austria, may 812, 2016, proceedings, part i. A 128bit data block was divided into eight 16bit blocks to reduce the hardware size. Pdf impossible differential cryptanalysis of spn ciphers.
Cme 211 earth 211 fall 2018 software development for scientists and engineers. Even so, little empirical research has been performed on the relationship between software architecture and software quality. View ruilin wangs profile on linkedin, the worlds largest professional community. Although relations among other important cryptanalytic approaches. Given an approximation with high probability and counting on the. Cryptanalysis of block ciphers with overdefined systems of. This paper reevaluates the security of gfnlfsr, a new kind of generalized unbalanced feistel network structure that was proposed at acisp 2009. Use matlab and other numerical software appropriately, i. In cryptography, linear cryptanalysis is a general form of cryptanalysis based on finding affine approximations to the action of a cipher.
One property they have is that even if one has some corresponding plaintext and ciphertext, it is not at all easy to determine what key has been used. This book constitutes the thoroughly refereed postconference proceedings of the 20th international workshop on fast software encryption, held in singapore, march 11, 20. Differential and linear cryptanalysis radboud universiteit. Chinese citizen sentenced to 12 years in prison for cyber. Linear cryptanalysis simple english wikipedia, the free. J chen, z dai, j duan, q hu, r li, h matzinger, i popescu, h zhai. Ruilin li new zealand professional profile linkedin. This attack is based on the 9round impossible differential 1 with additional two rounds at the beginning and two rounds at the end as shown in fig. Pdf improved impossible differential cryptanalysis of. Bing sun, zhiqiang liu, vincent rijmen, ruilin li, lei cheng, qingju wang, hoda alkhzaimi, chao li. Add open access links from to the list of external document links if available. Bing sun, meicheng liu, jian guo, vincent rijmen, ruilin li.
Ruilin li started to play accordion when she was 7 years old. Ruilin li senior associate general counsel university. Ruilin li, bing sun, chao li, longjiang qu, cryptanalysis of a generalized unbalanced feistel network structure, proceedings of the 15th australasian conference on information security and privacy, july 0507, 2010, sydney, australia. By using an algebraic method, the mathematical foundation of square attack is studied in this paper. See the complete profile on linkedin and discover ruilin s. Advances in cryptology eurocrypt 2016 springer for. A curated list of cryptography and cryptanalysis related tools and libraries. Given sufficient pairs of plaintext and corresponding ciphertext, bits of information about the key can be obtained and increased amounts of data will usually give a higher probability of success. Cryptanalysis of a generalized unbalanced feistel network. View the profiles of professionals named ruilin li on linkedin.
Ruilin li at national university of defense technology ruilin li. Future of information and communication conference, 494511, 2020. Impossible differential cryptanalysis is a very popular tool for analyzing the security of modern block ciphers and the core of such attack is based on the existence of impossible differentials. Impossible differential cryptanalysis of round clefia128. Linear cryptanalysis was introduced by matsui at eurocrypt as a theoretical attack on the data encryption standard des and later successfully used in the practical cryptanalysis of des. Free download, read and cite papers for your scientific research and study. Combining some observations with new tricks, we can filter out the wrong keys more efficiently, and improve the impossible differential attack on 11round clefia192256, which also firstly works for clefia128. Students must pass the final exam to pass the course. New impossible differential cryptanalysis of aria cryptology. Linear cryptanalysis is a known plaintext attack and uses a linear approximation to describe the behavior of the block cipher.
Impossible differential cryptanalysis of round clefia. Implementations of machine learning algorithm by python 3. Sign up for your own profile on github, the best place to host code, manage projects, and build software alongside 40 million developers. New cryptanalysis of block ciphers with low algebraic degree. Proceedings of international workshop on fast software encryption, singapore, 20.
Department of mathematics and system science, science college, national university of defense technology, changsha, china. This task will become increasingly hard as software technology and systems evolve and as the new. Zhang and chao li emergence, impossible differential cryptanalysis has been applied to attack many. V rijmen, r li, l cheng, q wang, h alkhzaimi, c li. In international workshop on fast software encryption, pages 181195. Differential fault attack dfa is a powerful cryptanalytic technique to retrieve secret keys by exploiting the faulty ciphertexts generated during encryption procedure. See the complete profile on linkedin and discover ruilin. Linear and differential cryptanalysis saint francis university. Journal of systems and software vol 84, issue 7, pages. Satellite phone, stream cipher, gmr2, cryptanalysis, inversion attack. Ruilin li independently performing arts accordionist.
The algorithm uses a substitutionpermutation network structure based on aes. I hope these programs will help people understand the beauty of machine learning theories and implementations. We show that gfnlfsr itself reveals a very slow diffusion rate, which could lead to several distinguishing attacks. Pdf differential fault analysis on shacal1 researchgate. Software architecture is concerned with the structure of software systems and is generally agreed to influence software quality. A realtime inversion attack on the gmr2 cipherused in. Differential fault attack on itubee block cipher acm. That cryptanalysis has a corresponding linear equation.
We first study the inverse properties of the ciphers components to reveal. Continuously developed for decades, sboxes are constantly evolving in terms of the design criteria for both security requirements and software hardware performances. It is a known plaintext attack in which the attacker studies the linear approximations of parity bits of the plaintext, ciphertext and the secret key. Fast software encryption 20th international workshop, fse. Linear cryptanalysis is one of the two most widely used attacks on block ciphers.
More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Sign up linear cryptanalysis attack on a 4 round spn cipher. B sun, z liu, v rijmen, r li, l cheng, q wang, h alkhzaimi, c li. Impossible differential cryptanalysis of spn ciphers ruilin li1, bing sun1 and chao li1. Any publication listed on this page has not been assigned to an actual author y. The hardware based cryptography 84,27 has been in use for several decades, as. Links among impossible differential, integral and zero. These two needs gave rise to the art of coding the messages in such a way that only the intended people could have access to the information.
It has been proven that such a cipher can be cracked using only one singleframe 15 bytes known keystream but with moderate executing time. Attacks have been developed for block ciphers and stream ciphers. In this paper, we present a new thorough security analysis of the gmr2 cipher. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Pdf a low data complexity attack on the gmr2 cipher used in.
Linear cryptanalysis linear cryptanalysis is a powerful method of cryptanalysis introduced by matsui in 1993 11. Provable security evaluation of structures against impossible differential and zero correlation linear cryptanalysis. Cryptanalysis of a generalized unbalanced feistel network structure. View ruilin lis profile on linkedin, the worlds largest professional community. A realtime inversion attack on the gmr2 cipher used in the. Multiround ciphers such as des are clearly very difficult to crack. See the complete profile on linkedin and discover ruilin s connections and jobs at similar companies. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Spyros stathopoulos, ali khiat, maria trapatseli, simone cortese, alexantrou serb, ilia valov, and themis prodromakis. The main goal of this diploma work is the implementation of matsuis linear cryptanalysis of des and a statistical and theoretical analysis of its complexity and success probability. I want to customize my headings a little bit so it would have an icon before.
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