Abstract
In this paper we introduce a novel meet-in-the-middle attack on the IDEA block cipher. The attack consists of a precomputation and an elimination phase. The attack reduces the number of required plaintexts significantly for 4 and 4.5 rounds, and, to the best of our knowledge, it is the first attack on the 5-round IDEA.
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Demirci, H., Selçuk, A.A., Türe, E. (2004). A New Meet-in-the-Middle Attack on the IDEA Block Cipher. In: Matsui, M., Zuccherato, R.J. (eds) Selected Areas in Cryptography. SAC 2003. Lecture Notes in Computer Science, vol 3006. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24654-1_9
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DOI: https://doi.org/10.1007/978-3-540-24654-1_9
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