A secured cryptographic model using intertwining logistic map
Sunil Kumar, Manish Kumar, Rajat Budhiraja, Malabika Das, Sanjeev Singh · Procedia Computer Science · 2018
A new cryptographic model is designed based on intertwining logistic map to ensure secure medical images. This cryptographic model is outlined to improve security, sensitivity and robustness for DICOM (Digital Imaging and Communications) applications. Using a 280-bit random key makes the model resistant to brute force attacks, which is further strengthened by an intelligent mix of confusion, sorting, substitution and diffusion processes while generating the complex cipher text. Security and performance evaluation is carried out using histogram analysis, correlation analysis, key space analysis, crop test, compression test and differential attacks analysis. Simulation results clearly demonstrate that proposed cryptographic model produces better results compared to existing techniques, with the average NPCR and UACI score for encrypted image to be 99.80% and 34.73% respectively.