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A Block Cipher Involving a Key Bunch Matrix, and a Key Matrix Supported With Xor Operation, and Supplemented with Permutation

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

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

Volume: 1;
Issue: 4;
Start page: 147;
Date: 2012;
Original page

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

In this investigation, we have developed a block cipher which includes a key bunch matrix and a key matrix supported with xor operation. In each round of the iteration process of this cipher, we have included a permutation process, wherein the elements of the plaintext matrix, are converted into binary bits, and arranged in a column wise manner. This is supplemented with the rotation of the binary bits of the last row and the last column, and is supported with a swapping process, wherein the portions of the sub-matrices are swapped. The cryptanalysis carried out in this investigation show that the cipher is a strong one and it cannot be broken by any attack.
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