Secure Transmission Services in Wireless Networks Using Key Trees

In contrast with conventional networks, mobile networks usually do not provide on-line access to trusted authorities or to centralized servers for secure message transmissions and exhibit problems like frequent problems due to link-node failures and pricey issues. For these reasons, existing solutions for secure message transmission services in regular networks require on-line trusted authorities or certificate repositories that are not well suited for securing mobile networks. To reduce computation overhead the core system is deployed at a server and accessed via mobile nodes.