A Lightweight Cryptography Technique with Random Pattern Generation

Abstract

The lightweight cryptography (LWC) is an interesting research area in the field of information security. So, different lightweight mechanisms have been developed in the existing works for securing the confidential information. But, it remains with the limitations like increased components usage, time consumption, power consumption and memory requirement. Also, the existing techniques utilized the same type of key generation and pattern generation approaches for all kinds of data, which leads to reduced security. To solve these problems, this paper intends to develop a new LWC mechanism by using the differential logical pattern (DLP) algorithm. Here, the input message (i.e. text or image) with the size of 16 × 16 blocks is taken for processing. For this input, the random key and S-box are generated for extracting the patterns. Then, the DLP mechanism is utilized to encrypt the input blocks before transmitting it to the receiver. At the receiving side, the inverse random key and S-box generation mechanisms are applied to generate the key used for decryption. Finally, the DLP decryption mechanism is applied to reconstruct the original data sent by the sender. The benefits of this work are reduced memory consumption and time complexity. The experimental results evaluate the performance of this technique by using various measures such as Peak Signal to Noise Ratio, Mean Squared Error, correlation coefficient, Number of Pixels Change Rate, Unified Average Changing Intensity, CPU cycles, time and memory.