Research Article Open Access

A Block Cipher Using Linear Congruences

V. U.K. Sastry and V. Janaki

Abstract

We have developed a block cipher by using modular arithmetic inverse and linear congruences. The cipher contains a key matrix called the outer key. It also includes another key, which contains a set of constants involved in the linear congruences. This key is called as inner key. The cryptanalysis carried out in this paper indicates that the cipher cannot be broken by any cryptanalytic attack. This cipher is extended to the case of a larger block wherein interlacing and iteration also play a vital role.

Journal of Computer Science
Volume 3 No. 7, 2007, 556-560

DOI: https://doi.org/10.3844/jcssp.2007.556.560

Submitted On: 7 February 2007 Published On: 31 July 2007

How to Cite: Sastry, V. U. & Janaki, V. (2007). A Block Cipher Using Linear Congruences. Journal of Computer Science, 3(7), 556-560. https://doi.org/10.3844/jcssp.2007.556.560

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Keywords

  • modular arithmetic inverse
  • inner key
  • outer key
  • linear congruences