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A Scalable Block Cipher Design Using Filter Banks and Lifting over Finite Fields

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2 Author(s)
Saraireh, S. ; Electron. & Electr. Eng. Dept., Univ. of Sheffield, Sheffield, UK ; Benaissa, M.

A scalable block cipher based on a filter bank structure over GF(28) is proposed. The filter bank structure is used to introduce the diffusion during the circular convolution process between the filters coefficients (which are generated from the key) and the plaintext. The confusion is achieved by the mixing between the analysis filter bank and a novel lifting scheme. The proposed cipher is scalable in both block and key lengths. The cipher is shown to be secure against differential and linear cryptanalysis and of comparable complexity to the AES.

Published in:

Communications, 2009. ICC '09. IEEE International Conference on

Date of Conference:

14-18 June 2009

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