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A Novel Block Cipher Involving a Key Bunch Matrix and a Permutation

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Author(s): V.U.K. Sastry | Shirisha Kakarla

Journal: International Journal of Computer & Electronics Research
ISSN 2320-9348

Volume: 1;
Issue: 4;
Start page: 218;
Date: 2012;
Original page

Keywords: Key bunch matrix | encryption | decryption | permutation | avalanche effect | cryptanalysis

ABSTRACT
In this paper, we have developed a block cipher involving a key bunch matrix. In each round of the iteration process we have introduced a permutation process, wherein we have converted the plaintext matrix into binary bits, arranged in a row wise manner, and offered right rotation to the first row and downward rotation to the first column. Then on seeing the resulting matrix as a bunch of sub-matrices, we have swapped the sub-matrices. The cryptanalysis carried out in this investigation shows very clearly that this cipher cannot be broken by any attack.
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