Hill Cipher Modification based on Pseudo-Random Eigenvalues
نویسندگان
چکیده
منابع مشابه
Hill Cipher Modification based on Pseudo-Random Eigenvalues
The Hill cipher is resistant to brute-force and statistical attacks, but it can be broken with a known plaintext-ciphertext attack (KPCA). In this paper, we propose a modification of the Hill cipher, HCM-PRE, which is still resistant to brute-force and statistical attacks, and is resistant also to KPCA due to dynamic encryption key matrix generating. With the modification, the new HCM-PRE can b...
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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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Chaotic cryptology is widely investigated recently. This paper reviews the progress in this area and points out some existent problems in digital chaotic ciphers. As a comprehensive solution to these problems, a novel pseudo-random bit generator based on a couple of chaotic systems called CCS-PRBG is presented. Detailed theoretical analyses show that it has perfect cryptographic properties, and...
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ABSTRACT: In its most general form, the Hill cipher’s keyspace consists of all matrices of a given dimension that are invertible over Zm. Working from known results over finite fields, we assemble and prove a formula for the number of such matrices. We also compare this result with the total number of matrices and the number of involutory matrices for a given dimension and modulus, identifying ...
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ژورنال
عنوان ژورنال: Applied Mathematics & Information Sciences
سال: 2014
ISSN: 1935-0090,2325-0399
DOI: 10.12785/amis/080208