SYMMETRIC KEY ENCRYPTION BASED ON DNA CRYPTOGRAPHY

Abstract

Nowadays large portion of significant records and personal information transmitted over unreliable channels or present over insecure platform, such as, social application, cloud, remote server. These documents or files can be used by intruder for malicious purpose, in such case we required an encryption scheme that is more efficient and ensure security end to end. The previous works based on DNA symmetric encryption were proposed but the necessity to give exceedingly improved and proficient calculation that give the encryption, steganography for all kind of archive to that it can undoubtedly move and kept over unreliable platform. Proposed an improved DNA symmetric encryption scheme that provides data encryption and steganography for data hiding in DNA nucleotides so that it can easily transmit over insecure channel and kept over unreliable platform. Also, the key is randomly generating from a large database of NCBI nucleotide hence, enhancing automation for key generation process, the key maintained very high cracking probability as every time generated new 64 length of nucleotide and the algorithm uses Shannon principle of confusion and diffusion protecting documents from numerous possible attacks and efficient in term of execution. This work reduces the AND, or and shift operations used in AES cryptography by using DNA properties.