Hardware implementation of DNA based cryptography

DNA cryptography is a new field in cryptography that is emerging with the advancement on DNA research carried out in recent years. DNA is being used because of its vast parallelism, energy efficiency and the amount of information that the DNA can store. These properties of DNA are explored for cryptographic purposes such as encryption, authentication, signature, and various other applications in cryptography. In this paper, two different cryptographic schemes based on DNA binary strands are discussed. In one of the approaches DNA based cryptography itself is used to encrypt and decrypt the message. And in another approach DNA strands are used to generate key for encryption and decryption. Biological issues and cryptography computing difficulties provide a double security safeguards for the two schemes and makes it difficult for intrusion.