Abstract
The design of block ciphers with provable security against differential and linear cryptanalysis has always been an important consideration. However, it is also vital to evaluate the security of block ciphers against other forms of cryptanalysis, for example, impossible differential cryptanalysis, a variant of differential cryptanalysis (DC). In impossible differential cryptanalysis, impossible differential characteristics are used to retrive a subkey material for the first or the last several rounds of block ciphers. Thus the security of a block cipher against impossible differential cryptanalysis can be evaluated by impossible differential characteristics [1]. In this paper, we will first examine the security of Extended Feistel Networks (EFN) against DC and then use the U-method introduced in [1] to find impossible differential characteristics of EFN.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Kim, J., Hong, S., Sung, J., Lee, S., Lim, J., Sung, S.: Impossible Differential Cryptanalysis fir Block Cipher Structures. In: Johansson, T., Maitra, S. (eds.) INDOCRYPT 2003. LNCS, vol. 2904, pp. 82–96. Springer, Heidelberg (2003)
Ibrahim, S., Maarof, M.A., Ngadiman, M.S.: Practical Security against Differential Cryptanalysis for Extended Feistel Network. Universiti Teknologi Malaysia
Sung, J., Lee, A., Lim, J., Hong, S., Park, S.: Provable Security for the Skipjack-like Structure against Differential Cryptanalyis and Linear Cryptanalysis. In: Okamoto, T. (ed.) ASIACRYPT 2000. LNCS, vol. 1976, pp. 274–288. Springer, Heidelberg (2000)
Schneier, B., Kelsey, J.: Unbalanced Feistel Networks and Block-Cipher Design. In: Gollmann, D. (ed.) FSE 1996. LNCS, vol. 1039, pp. 121–144. Springer, Heidelberg (1996)
Aoki, K., Ohta, K.: Strict evaluation of the maximum average of differential probability and the maximum average of linear probability. IEICE Transactions fundamentals of Electronics, Communications and Computer Sciences 1, 2–8 (1997)
Kim, J., Lee, C., Sung, J., Hong, S., Lee, S., Lim, J.: Seven New Block Cipher Structures with Provable Security against Differential Cryptanalysis. IEICE Transactions fundamentals of Electronics, Communications and Computer Sciences 10, 3047–3058 (2008)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Yap, H. (2009). Impossible Differential Characteristics of Extended Feistel Networks with Provable Security against Differential Cryptanalysis. In: Kim, Hk., Kim, Th., Kiumi, A. (eds) Advances in Security Technology. SecTech 2008. Communications in Computer and Information Science, vol 29. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10240-0_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-10240-0_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-10239-4
Online ISBN: 978-3-642-10240-0
eBook Packages: Computer ScienceComputer Science (R0)