Mixminion: Strong Anonymity for Financial Cryptography

Anonymous communication is a valuable but underused tool for securing financial communications. As early as the first commercial telegraph codes, businesses have recognized the value of cryptography to protect their communication from prying eyes. But cryptography alone still allows adversaries to discover confidential business relationships by performing traffic analysis to reveal the presence of such communication. Mixminion is an open source, deployed system under active development. It resists known forms of traffic analysis, allowing parties to communicate without revealing their identities.