A COMPREHENSIVE REVIEW ON MEDICAL IMAGE ENCRYPTION PROCESS IN DUAL DOMAIN

Abstract

The booming desire for e-healthcare has inflated attention to the security of cyber-attack data in today's technological era. As digital medical images are transferred through the public network, an acceptable level of security is required. Encryption, which secures medical images, is one of the most popular processes. This paper recommends DICOM image encryption based on chaotic frequency domain attractors by integer wavelet transform (IWT) and spatial domain fused with deoxyribonucleic acid (DNA) sequence. A chaotic 3D Lorenz attractor and logistic map are used in the proposed algorithm to produce pseudo-random encryption keys. Subsequent stages are involved in the algorithm, i.e. permutation, substitution, encoding, complementary and decoding. Different tests were tested for 256 × 256 DICOM images to support the resistance of the proposed algorithm by achieving an average entropy of 7.99, a larger main space of 10238 and a non-zero correlation. The overall results confirm that the algorithm proposed is robust against attacks by brute force.