Caesar Cipher with Goldbach Code Compression for Efficient Cryptography

Abstract

This paper proposes an enhancement on the traditional Caesar cipher by introducing the concept of compression using the Goldbach code algorithm to conceal the ciphertext generated by the Caesar cipher for added security. The Caesar cipher is one of the early cryptographic algorithms that is widely used for information hiding and data security. However, the traditional Caesar cipher is vulnerable to attacks and is extremely easy to crack. For the Caesar cipher, each character of a message is always replaced by the same fixed character that has been predetermined. To improve the cipher’s security feature, the result of the Caesar cipher is encrypted and is compressed using the Goldbach code algorithm. Simulation results revealed that the proposed method produces a less predictable and shortened ciphertext length than the existing process, ensuring a secure and cost-effective encryption process.