Concepts inSecure aggregation in a publish-subscribe system

Publish¿subscribe pattern

Publish¿subscribe is a messaging pattern where senders of messages, called publishers, do not program the messages to be sent directly to specific receivers, called subscribers. Instead, published messages are characterized into classes, without knowledge of what, if any, subscribers there may be. Similarly, subscribers express interest in one or more classes, and only receive messages that are of interest, without knowledge of what, if any, publishers there are.  more from Wikipedia

Subscription business model

The subscription business model is a business model where a customer must pay a subscription price to have access to the product/service. The model was pioneered by magazines and newspapers, but is now used by many businesses and websites.  more from Wikipedia

Bandwidth (computing)

In computer networking and computer science, the words bandwidth, network bandwidth, data bandwidth, or digital bandwidth are colloquial and metaphoric terms widely used in textbooks as well as scientific papers, patents and standards to refer to various bit-rate measures, representing the available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).  more from Wikipedia

Message authentication code

In cryptography, a message authentication code (often MAC) is a short piece of information used to authenticate a message. A MAC algorithm, sometimes called a keyed (cryptographic) hash function, accepts as input a secret key and an arbitrary-length message to be authenticated, and outputs a MAC (sometimes known as a tag).  more from Wikipedia

Routing

Routing is the process of selecting paths in a network along which to send network traffic. Routing is performed for many kinds of networks, including the telephone network, electronic data networks (such as the Internet), and transportation networks. This article is concerned primarily with routing in electronic data networks using packet switching technology.  more from Wikipedia

Confidentiality

Confidentiality is an ethical principle associated with several professions (e.g. , medicine, law, psychotherapy). In ethics, and (in some places) in law and alternative forms of legal resolution such as mediation, some types of communication between a person and one of these professionals are "privileged" and may not be discussed or divulged to third parties.  more from Wikipedia

Node (networking)

In communication networks, a node (Latin nodus, ¿knot¿) is a connection point, either a redistribution point or a communication endpoint. The definition of a node depends on the network and protocol layer referred to. A physical network node is an active electronic device that is attached to a network, and is capable of sending, receiving, or forwarding information over a communications channel. A passive distribution point such as a distribution frame or patch panel is consequently not a node.  more from Wikipedia