Modification of Vigenère Cipher by Random Numbers, Punctuations & Mathematical Symbols

Autor:	C. R. S. Bhardwaj
Rok vydání:	2012
Předmět:	Discrete mathematics Vigenère cipher Running key cipher Computer science Modulo Key (cryptography) Plaintext Algorithm Transposition cipher Range (computer programming)
Zdroj:	IOSR Journal of Computer Engineering. 4:35-38
ISSN:	2278-0661 2278-8727
DOI:	10.9790/0661-0423538
Popis:	This dissertation discusses modification of Vigenere cipher which works by adding a key repeatedly into the plaintext using the convention that A = 0, B = 1, . . . , Z = 25; and addition is carried out modulo 26—that is, if the result is greater than 25, we subtract as many multiples of 26 as are needed to bring us into the range [0,., 25], that is, [A, . . . Z]. Mathematicians write this as: C = P + K mod 26. .For modification of Vigenere cipher, numbers, punctuations, mathematical symbols may be used for key in
Databáze:	OpenAIRE
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