link encryption and anonymous interactivity (Was: "Subway" remai

[Wei Dai]

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Adam Shostack writes:

> 	The idea is a very good one, its usually called "link
> encryption."  The idea is to make it difficult to tell when someone is
> using a line by filling that line with random noise that looks like
> encrypted data.

This gives me an idea.  Imagine a server that allows you to open a 
low bandwidth (let's say around 100 cps, in order to reduce costs)
link-encrypted telnet session with it, and provides you with a number 
of services, for example a link-encrypted talk session with another 
user.  You'll need to maintain the link 24 hours a day to defend 
against statistical analysis, and of course you can chain a number of 
these servers together in a way similiar to chaining remailers.

This scheme seems to provide untracibility while getting around the 
latency cost problem of remailers, thus allowing users to talk to each 
other in real time, anonymously.

Wei Dai

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E-mail: Wei Dai <weidai at eskimo.com>   URL: "http://www.eskimo.com/~weidai"
=================== Exponential Increase of Complexity ===================
--> Big Bang --> atoms --> complex macromolecules --> biological evolution
--> central nervous systems --> social learning --> symbolic communication
--> computers --> internetworking --> close-coupled automation
--> high-bandwidth brain-to-net connections --> artificial intelligence
--> distributed consciousness --> group minds --> ? ? ?