A Parallel DNA Crypto Algorithm for Medical Image

Abstract

In health care, due to COVID-19 pandemic, doc- tors and patients are preferring online tele consultancy. In online tele consultancy, diagnosis of the disease is on the basis of online communication and digital images. Wireless communication is good, but the security breach is a crucial problem. To prevent a security breach, various cryptography algorithms are used. The computational complexity of these algorithms is excessive. Hence, the major research issue in health care is the embellishment of security with lowered time complexity. In this paper, we proposed a parallel DNA crypto algorithm to afford substantial security with decline in time complexity. The parallel task processing and paral- lel instructions processing with multithreads are exercised for parallel process. The medical image is segregated into four subparts, and parallelly, each subpart is remodelled into DNA strands using bit-level dynamic DNA coding pat- tern selection. Parallelly, all DNA strands pixels are scuf- fled by sequences of four-dimensional Chen’s and Lorenz chaos theories to get confusion matrices. The DNA XOR is applied to obtain transform matrices. All transform matrices are concatenated to conquer a encipher image. Our algo- rithm’s simulation exhibits incredible enhancement in the operational speedup. The findings of experiment also proved that the proposed security-level methodology is higher than other conventional algorithms.