A Novel Approach to Cryptography using Modified Substitution Cipher and Hybrid Crossover Technique

the modern globally connected world, with the internet growing continually, the exchange of information over the web has made the data quite vulnerable. The need for data security is thus increasing exponentially day by day. Cryptography is a scientific measure used for the protection of sensitive communications. In this paper, a novel approach for information security is introduced. The encryption technique is incorporated using two methods namely, a modified approach to substitution cipher and a two step hybrid crossover technique. The devised algorithm uses two keys, thereby, increasing the security aspect. Moreover the entire process is done on alphabetical data thus increasing the scope of its implementation. Index Terms Crossover, Cryptography, Data security, Encryption, Substitution technique.