Introduction to finite fields and their applications
Introduction to finite fields and their applications
Essential Algebraic Structure within the AES
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Cryptanalysis of Block Ciphers with Overdefined Systems of Equations
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Efficient algorithms for solving overdefined systems of multivariate polynomial equations
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
About the XL algorithm over GF(2)
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
Analysis of the SMS4 block cipher
ACISP'07 Proceedings of the 12th Australasian conference on Information security and privacy
An analysis of the XSL algorithm
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
An analysis of XSL Applied to BES
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
Cryptanalysis of Reduced-Round SMS4 Block Cipher
ACISP '08 Proceedings of the 13th Australasian conference on Information Security and Privacy
Some New Observations on the SMS4 Block Cipher in the Chinese WAPI Standard
ISPEC '09 Proceedings of the 5th International Conference on Information Security Practice and Experience
An Analysis of the Compact XSL Attack on BES and Embedded SMS4
CANS '09 Proceedings of the 8th International Conference on Cryptology and Network Security
Some results on cryptanalysis of SMS4 block cipher
International Journal of Applied Cryptography
Algebraic cryptanalysis of SMS4: gröbner basis attack and SAT attack compared
ICISC'09 Proceedings of the 12th international conference on Information security and cryptology
Differential Fault Analysis on SMS4 using a single fault
Information Processing Letters
Security of the SMS4 block cipher against differential cryptanalysis
Journal of Computer Science and Technology - Special issue on natural language processing
Parallelizing the camellia and SMS4 block ciphers
AFRICACRYPT'10 Proceedings of the Third international conference on Cryptology in Africa
Parallelisable variants of Camellia and SMS4 block cipher: p-Camellia and p-SMS4
International Journal of Applied Cryptography
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SMS4 is a 128-bit block cipher which is used in the WAPI standard in China for protecting wireless transmission data. Due to the nature that the functions deployed in the round transformations of SMS4 operate on two different fields GF(28) and GF(2), it is difficult to analyze this cipher algebraically. In this paper we describe a new block cipher called ESMS4, which uses only algebraic operations over GF(28). The new cipher is an extension of SMS4 in the sense that SMS4 can be embedded into ESMS4 with restricted plaintext space and key spaces. Thus, the SMS4 cipher can be investigated through this embedding over GF(28). Based on this new cipher, we represent the SMS4 cipher with an overdetermined, sparse multivariate quadratic equation system over GF(28). Furthermore, we estimate the computational complexity of the XSL algorithm for solving the equation system and find that the complexity is 277 when solving the whole system of equations.