Enhancing The Security of Caesar Cipher Using Double Substitution Method
Journal Title: International Journal of Computer Science & Engineering Technology - Year 2014, Vol 5, Issue 7
Abstract
Cryptography comes from the Greek words for “secret writing”. The plain text is encrypted into the corresponding cipher text, using an algorithm and a key. Substitution and Transposition are two techniques used for converting data into non-readable form. Caesar Cipher is an example of substitution technique. In this paper we have proposed a cipher that uses basic encryption techniques of substitution and transposition. A single columnar transposition followed by a double substitution is applied on a Caesar cipher in order to make it a stronger and a more secure cipher.
Authors and Affiliations
Shahid Bashir Dar
Keywords
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