DNA Based Cryptography

Secure data communication is the most important and essential issue in message transmission over the network. Cryptography provides way of making secure message for confidential message transfer. It is the process of transforming the senders message to secret format called cipher text that only intended receiver will understand secret message. One of the efficient way is DNA based cryptography. With progress in DNA computing, DNA cryptography has become promising direction in cryptography research. It creates bridge between existing methods and new technology. This paper mainly focuses on the different cryptographic techniques used for purpose of encryption and decryption. A new cryptography technique is proposed using Symmetric Key Exchange, one-time pad scheme which generate a unique cipher text in the form of DNA sequence.