A New Hybrid Cryptosystem Involving DNA,Rabin, One Time Pad and Fiestel

TL;DR

This paper introduces a novel hybrid cryptosystem that combines DNA cryptography, Rabin algorithm, one-time pad, and Feistel structure to enhance data security through biological and computational techniques.

Contribution

It presents a new cryptographic scheme integrating DNA, Rabin, OTP, and Feistel structures, offering improved security features over existing methods.

Findings

Enhanced security via DNA-based randomness

Use of dual keys for session and public/private encryption

Increased difficulty for attackers to derive ciphertext without private key

Abstract

Information security is a crucial need in the modern world. Data security is a real concern, and many customers and organizations need to protect their sensitive information from unauthorized parties and attackers. In previous years, numerous cryptographic schemes have been proposed. DNA cryptography is a new and developing field that combines the computational and biological worlds. DNA cryptography is intriguing due to its high storage capacity, secure data transport, and massive parallel computing. In this paper, a new combination is proposed that offers good security by combining DNA, the Rabin algorithm, one time pad, and a structure inspired by Fiestel. This algorithm employs two keys. The first key is a DNA OTP key which is used for only one secure communication session. The second key, which combines the public and private keys, is a Rabin key. Additionally, by using a Feistel inspired scheme and randomness provided by DNA, the ciphertext is made harder to obtain without the private key.