Survey: Recent Modifications in Vigenere Cipher

Kartha, Ranju S; Paul, Varghese

doi:10.9790/0661-16294953

Cited by 9 publications

(6 citation statements)

References 3 publications

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“…In addition, if the cipher is longer, the letters will be more uniformly distributed. To the same plain text, if the cipher length extended to 5, such as label, the Index of Coincidence (IC) for a given alphabet will be smaller (Kartha et al, 2014).…”

Section: Encryption and Decryption Algorithmmentioning

confidence: 99%

A lightweight and efficient encryption scheme based on LFSR

Wang

Zhang³

et al. 2018

IJES

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Contents:IJES is a refereed international journal providing an international forum to report, discuss and exchange experimental or theoretical results, novel designs, work-in-progress, experience, case studies, and trend-setting ideas. Papers should be of a quality that represents the latest advances in embedded systems in time-to-market, cost, code size, weight, testability, power, real-time behaviour, and stimulating future trends.

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Section: Encryption and Decryption Algorithmmentioning

confidence: 99%

A lightweight and efficient encryption scheme based on LFSR

Wang

Zhang³

et al. 2018

IJES

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“…If the key has that characters (i.e., punctuations and numbers) so that it must be converted into capital letters. This is a weakness of Vigenere cipher algorithm which only use capital letters A-Z [5], [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Modified Key Using Multi-Cycle Key In Vigenere Cipher

2019

IJRTE

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Encryption-Decryption is one form of securing text data, images and sound in order to minimize data stealing, attack, etc. The purpose of this study is to modified encryption-decryption keys of Vigenere cipher.Based on experiment show that multi-cycle keyencryption-decryption have been implemented. Meanwhile, the best MAE values of final encryption process of 56.837 and final decryption process of 0. In other words, the modification of key is more efficient and effective for data security. Furthermore, the multi-cycle key encryption-decryption optimizing using metaheuristics as one of the future works that can be conducted in order to investigate the best encryption-decryption especially using Vigenere cipher.

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“…So the cracker can easily break the code by performing frequency analysis on the letters in the ciphertext. The Vigenere cipher masks the frequency with which a character appears in a language, which makes the use of frequency analysis more difficult [4]. The frequency distribution of the ciphertext is much more flat.…”

Section: Cryptanalysis Of Vigenere Ciphermentioning

confidence: 99%

“…There are two methods to find the length of the keyword. They are the Kasiski method -to find the keyword length using the repeated text sequence in the ciphertext and the IC to predict the number of alphabets used for substitution [4]. If the length of the ciphertext is too small or it does not include any repetitions of string, then these two methods cannot break the cipher.…”

Section: Cryptanalysis Of Vigenere Ciphermentioning

confidence: 99%