Onion routing was developed in the mid-1990s at the U.S. Naval Research Laboratory by employees Paul Syverson, Michael G. Reed, and David Goldschlag to protect U.S. 展开

Metaphorically, an onion is the data structure formed by "wrapping" a message with successive layers of encryption to be decrypted ("peeled" or "unwrapped") by as many intermediary computers as there are layers before arriving at its destination. The original message … 展开

• Onion-Router.net – site formerly hosted at the Center for High Assurance Computer Systems of the U.S. Naval Research Laboratory
• Syverson, P.F.; Goldschlag, D.M.; Reed, M.G. (1997). "Anonymous connections and onion routing" (PDF). … 展开

Timing analysis
One of the reasons why the typical Internet connections are not considered anonymous is the ability of Internet service providers to … 展开

• Anonymous remailer
• Bitblinder
• Chaum mixes
• Cryptography
• Degree of anonymity
• Diffie–Hellman key exchange 展开