Cryptography Reference
In-Depth Information
Further Reading
There are a number of different products available now
from companies offering various levels of anonymous and
pseudonymous accounts. Some include MuteMail ( mute-
mail.com ), HushMail ( hushmail.com ), Guardster ( guard-
ster.com ), Safe Mail, ( safe-mail.net ), and Anonymizer
( anonymizer.com ). These operations are often secure, but
they have been known to turn over subscriber informa-
tion and, in some cases, decryption keys in response to
subpoenas. [And07] HushMail, for instance, says that it
will not release information without a subpoena from the
Supreme Court of British Columbia, Canada, a significant
legal hurdle but one that can be met.
George Danezis, Roger Dingledine and Nick Mathewson
have an anonymous remailer, Mixminion, that uses Mix-
like routing to obscure the content and path of the mes-
sages. The latest version is available from mixminion.net .
[DDM03]
MorphMix is a tool developed by Marc Rennhard and
Bernhard Plattner that asks each user's node to actively
contribute to the mix, a choice that helps force the net-
work infrastructure to scale while also requiring a mecha-
nism for ranking the reputation of the users.[RP04, TB06]
Salsa, a tool from Arjun Nambiar and Matthew Wright,
selects the nodes in a path in a random way in order to
prevent an attacker from infiltrating the circuits. This
forces the attacker to control a significant proportion of
the nodes in order to have a good chance of intercepting a
message. [NW06]
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