Mix network
(also Chaumian Mix Network)
Mix network definition
A mix network is a routing protocol that enhances user communication privacy over the internet. As a privacy-enhancing technology, it is designed to route and obfuscate messages, so the destination and source would be unknown. This is achieved by mixing and routing the messages through many servers called “mix nodes” or “mixes.” These servers receive encrypted data, then mix them with other bathes of incoming messages, finally forwarding them in random order. Due to this procedure, it is challenging to trace the sender or destination of these messages.
Privacy in email communications: Mix networks can be applied to email systems to enhance privacy and sensitive data. This is achieved by anonymizing email communications, making intercepting or monitoring the content challenging.
Anonymous messaging: Applying Mix networks for messaging applications allows users to send and receive messages without revealing their location and, more importantly, identities. Mix networks are often used by journalists or whistleblowers who want to communicate or disclose information anonymously.
File sharing: When used in file-sharing applications, Mix networks allow users to share files and stay anonymous at the same time. Usually, the IP address is encrypted while uploading and downloading files.
Financial transactions: Mix networks are utilized to provide anonymity and privacy for personal financial transactions.
Anonymous web browsing: Regarding browsing online, Mix networks work similarly to onion routing used in Tor browsers. Users access websites through a mixed network, preventing ISPs and websites from tracking their digital footprint.
See also: keychain, message passing