TRANSPOLY HILL CIPHER — AN IMPROVEMENT OVER TRADITIONAL HILL CIPHER

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Published: Feb 20, 2018
DOI: https://doi.org/10.26483/ijarcs.v9i1.5206
Keywords:
substitution cipher, transposition cipher, hill cipher, symmetric matrix, cryptanalysis, diffusion, confusion

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ASHISH PANDEY
KAMLA NEHRU INSTITUTE OF ENGINEERING AND TECHNOLOGY, SULTANPUR
STUTI PANDEY
KAMLA NEHRU INSTITUTE OF ENGINEERING AND TECHNOLOGY, SULTANPUR
ABHAY KUMAR AGARWAL
KAMLA NEHRU INSTITUTE OF ENGINEERING AND TECHNOLOGY, SULTANPUR

Abstract

Every encryption technique is based on any one of two facts- substitution or transposition. Sometimes the combination of both techniques is used. A substitution technique is one in which the letters of plaintext are replaced by other letters or by numbers or symbols. The basic concept behind this paper is to improve the strength of Hill cipher, ‘a multiple-letter substitution cipher’ against known plaintext attack. This paper presents a modified approach which is an enhancement over traditional Hill cipher by using symmetric matrix of plaintext letters.

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Vol. 9 No. 1 (2018): January-February 2018
Section
Articles

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