Modified Hill Cipher with Interlacing and Iteration
نویسندگان
چکیده
منابع مشابه
A Modified Hill Cipher Involving Interweaving and Iteration
This paper deals with a modification of the Hill cipher. In this, we have introduced interweaving in each step of the iteration. The interweaving of the resulting plaintext, at each stage of the iteration, and the multiplication with the key matrix leads to confusion and diffusion. From the cryptanalysis performed in this investigation, we have found that the cipher is a strong one.
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Two recent Hill cipher modifications which iteratively use interweaving and interlacing are considered. We show that strength of these ciphers is due to non-linear transformation used in them (bit-level permutations). Impact of number of iterations on the avalanche effect is investigated. We propose two Hill cipher modifications using column swapping and arbitrary permutation with significantly...
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Hill Cipher is a symmetric cryptosystem that was claimed to suffer from known-plaintext attack for many years. Different methods have been proposed to make this cipher more secure against known attacks. The introduced classic Hill cipher by Tourani and Falahati in 2011 that was devised in two variants and based upon affine transformation, was considered to be more secure against known attacks. ...
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In this investigation, we have developed a block cipher by blending a modified Feistel cipher and the advanced Hill cipher. In this analysis, we have made use of a pair of involutory matrices, say A and B which include the keys K and L. Here the size of the plaintext is 1024 binary bits and the size of the keys (both put together) is 256 binary bits. The involutory matrices A and B, the modular...
متن کاملA Block Cipher Obtained By Blending Modified Feistel Cipher And Advanced Hill Cipher Involving A Single Key Matrix
In this investigation, we have developed a block cipher which includes the basic ideas of the modified Feistel cipher and the advanced Hill cipher. In the advanced Hill cipher, as the modular arithmetic inverse of a matrix is the same as the matrix itself, the computations involved in the development of the inverse of the matrix are reduced remarkably. The cryptanalysis carried out in this inve...
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ژورنال
عنوان ژورنال: Journal of Computer Science
سال: 2007
ISSN: 1549-3636
DOI: 10.3844/jcssp.2007.854.859