Targeted Content-Sharing in a Multi-group DTN Application using Attribute-Based Encryption

In a battlefield, multiple groups operate with different missions, but their missions and groups can dynamically change based on the evolving situation. Due to the unavailability of network infrastructure after deployment, group members form a Delay Tolerant Network (DTN) which is prone to security attacks. Hence, based on the mission attributes, group memberships, nodes' interests, and data tags determination, targeted contents need to be distributed in a secure fashion to different users. Though existing Attributes Based Encryption (ABE) can provide security of information, revoking a member from a group is always an issue in DTN as the Attribute Authority (AA) is unavailable to the DTN nodes. Therefore, we adopt the ReVOABE algorithm for a battlefield DTN application for targeted data forwarding based on mission attributes and content interests.