A Comprehensive Literature Review of Data Encryption Techniques in Cloud Computing and IoT Environment

The internet of thing (IoT) is a network of interconnected physical devices, computer-based system, home-based application, automobiles and other things that are assigned with the unique IP address and devices may have the capability to share the data or information over networks without having any human to machine or human to human interaction. IoT devices generate a large volume of data is named Big data. Therefore, the concept of cloud computing was introduced to overcome storages issues on device. Cloud Computing is the latest emerging field which involves data processing and data storage to access remotely. However, the data on the internet is a risk. The IoT devices are generally small that consume less power and require less computational speed. As we know, the data encryption technique such as advanced encryption standard (AES), data encryption standard (DES) and triple advanced encryption standard (3DES) are complex algorithms. Therefore, these traditional encryption algorithms are not feasible for IoT devices. The issue mentioned above can be resolved by designing a lightweight encryption method to secure data transmission and communication in the IoT environment. The main objective of this research is to conduct a survey related to encryption techniques in cloud and IoT. This study summarize the encryption techniques, issues and variants, used for cloud and IoT. Furthermore, this study also presents the comparison of computational complexity of these techniques.