QWERTY Cipher

Abstract

Substitution cipher is use to encrypt plaintext into ciphertext for secure communication. The message is encrypted by substituting the letter of alphabet n places ahead of the current letter, where ‘n’ acts as a key The Substitution Cipher works on the set of 26 English alphabets. In this paper we introduce the QWERTY Cipher which is the extension to the Substitution Cipher. This cipher works on set of 36 characters only by adding digits and some other symbols to the existing substitution cipher in addition to that changes the mapping sequence used in the substitution cipher. The mapping takes from an alphabet sequence to extended QWERTY keyboard sequence.
DOI: 10.17762/ijritcc2321-8169.1505183