A novel DNA sequence dictionary method for securing data in DNA using spiral approach and framework of DNA cryptography

DNA cryptography is a new branch of information security. It encrypts the information in the form of DNA nucleotides (A, T, G and C). It makes use of the vast storage capacity of DNA and its biological properties like highly stable molecule, durability, cost effective and easily available. DNA cryptography is a combination of biological and computer science domain. The researcher of this field must have the knowledge of DNA, computer science and information security methods. This paper provides the framework for DNA cryptography and it also provides the summarized information of algorithms used for providing security to the data stored in DNA. In this paper, authors propose a new method for providing security to the data in the form of DNA sequence. The proposed method provides security at the two level using spiral transposition and DNA sequence dictionary table.