It is these directory servers that allow the onion routing protocol in the originating computer to create a path by selecting at least three routers (three nodes).īefore the message (data, query, etc.) leaves the user's computer, each router node is encrypted separately creating one layer on top of the other. Onion routing hides the names of the parties that are communicating as well as the data by encrypting the payload in layers, with a different layer for each hop in the route.Īlthough Tor, the most widely used network of onion routing, is considered decentralized, it does have centralized servers that keep track of all the routers in the network. A method for anonymous communications over a wide area network such as the Internet.
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