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]