Securing JPEG-2000 images in constrained environments: a dynamic approach

This paper presents an efficient and lightweight format-compliant selective encryption algorithm for secure JPEG 2000 coding. The proposed encryption scheme is dynamic in nature, where the key is changed for every input image. Furthermore, an amount of 4% of bytes from each packet data is selected to follow the encryption process. Moreover, to achieve the desired security, two rounds of substitution-diffusion processes are applied to the selected bytes. Experimental analysis has proved that this amount of encrypted data ensures a hard image distortion, while significantly preserve the communication bandwidth. In addition, compression analysis and extensive security tests have demonstrated: (1) the robustness of the proposed selective encryption approach against the most known types of attacks, (2) the preservation of the main compression properties (i.e., compression friendliness and format-compliant), and most importantly, and (3) the efficiency in term of execution time compared to others similar JPEG-2000 images encryption schemes.