A multi-level random key cryptosystem based on DNA encoding and state-changing mealy machine

Cryptography allows our data to be transmitted without giving sensitive information away. This is the art of hiding the information from the malicious third party and making the data accessible to only the sender and the receiver. Building a complex cryptosystem has always been a challenge that can provide relentless security and is infeasible to break. This paper discusses a hybrid cryptosystem that is inspired by the concepts of DNA cryptography and it is further strengthened using multiple components. A random key is used which is generated using the run test of randomness, different DNA encoding combinations, and a state-changing random state mealy machine is used for further strengthening the security. This paper provides a detailed discussion regarding every component the authors used to build the system and also discusses about the vulnerabilities that they found in the existing works with also an overview on how they have addressed them. This paper also discusses the effectiveness and the performance of the proposed system to give an overview of its security measures and also provides some comparative analysis with existing works to back the claim on improved security features.