Broadcasting cryptosystem in computer networks

Broadcasting Cryptosystem in Computer Networks Using Geometric Properties of Lines

In 1997, Wu and Wu proposed an improvement of the Chang-Wu broadcasting cryptosystem using geometric properties of lines. The Wu-Wu scheme gave a better performance and required fewer public parameters than the Chang-Wu scheme. In this paper the authors propose an improvement to the Wu-Wu scheme using geometric properties of line. This improvement reduces the computation and significantly decre...

Cryptanalysis of Improved Liaw's Broadcasting Cryptosystem

A secure broadcasting cryptosystem must provide a secure communication channel from a sender to a group of legal or authorized receivers. Many of the proposed systems [3-5] require a large number of broadcast messages and present a number of problems. Moreover, Liaw [2] proposed a secure broadcasting scheme with fewer broadcasting messages, which allows easy insertion of new users into the acti...

Broadcasting in Opportunistic Networks

Broadcasting in Wireless Networks

In a multihop wireless network, each node has a transmission radius and is able to send a message to one of its neighbors (one-to-one) or all of its neighbors (oneto-all) that are located within the radius. In a broadcasting task, a source node sends the same message to all the nodes in the network. Some existing solutions apply rebroadcasting from each clusterhead or border node in a clustered...

Broadcasting in Unlabeled Networks

We consider broadcasting a message from one node to all other nodes of an asynchronous totally unlabeled network: neither nodes nor links of the network have a priori assigned labels but they know the topology of the network. Nodes can send messages of arbitrary size and we are interested in minimizing the total number of messages. Broadcasting in an n-node unlabeled network is perfect if it us...