Secure Self-Destruction of Shared Data in Multi-CloudIoT

Due to its flexibility and efficiency, cloud computing becomes a typical infrastructure for storing, processing, and sharing a large amount of Internet of Things (IoT) data collected from devices and sensors. However, data sent to the Cloud may be used incorrectly or copied without permission. To allow owner of data sent to the Cloud to grant access to a specific set of captured data fields for a set of users and prevent that access to others using minimum number of keys; Our approach proposes encryption of data by access. Our solution also allows data owner to restrict access to certain period by destroying data and keys after this time in order to change them; In addition, our approach improves availability, integrity and confidentiality of information stored in the cloud by building a Cloud of Clouds (multi-cloud).

I. Introduction

CloudIoT [1] presents the merge of two complementary technologies: Internet of Things (IoT) and Cloud computing. The capabilities and resources of unlimited Cloud to offset its technological constraints such as storage and processing enhance IoT. On the other hand, the Cloud has expanded its scope into the real world through IoT in a more dynamic and distributed way to deliver new applications and services in a large-scale real-time scenario. CloudIoT enables better data sharing, simplifies storage and processing of data, enables the same data to be used across multiple services and by multiple users, facilitates the combination of data from multiple users, and supports mobility of users. In short, the benefits of CloudIoT rely heavily on data sharing. However, shared data that resides in cloud for long-time may be used incorrectly or copied without permission. In addition, they consume more storage space and reduce efficiency of the system especially if they are no longer useful, so the destruction of these data can be seen as a way of security for them. The manual removal of these data is very difficult since their number is very large so we need automatic removal expressed by self-destruction.