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A '''[[cypherpunk]] anonymous remailer''' is a Type I [[anonymous remailer]] that takes messages encrypted with [[Pretty Good Privacy|PGP]] or [[GNU Privacy Guard|GPG]], or in some cases in plain text, and forwards them removing any identifying information from the header.

==Sending a Cypherpunk Message==

'''Step 1: Retrieving the remailer's Public Key.'''

:Generally you can get a Cypherpunk remailer's public key by sending an email message with the subject "remailer-key" to the server you wish to use.

'''Step 2: Import remailer's public keys into [[Pretty Good Privacy|PGP]] or [[GNU Privacy Guard|GPG]].'''

'''Step 3: Compose Message'''

:Compose the message in your favorite text editor, using the following template:

<pre>::
Anon-To: <Recipient Email Address>

##
Subject: <Subject>

<Message Text>
</pre>

'''Step 4: Encrypt Message'''

:Use [[Pretty Good Privacy|PGP]] or [[GNU Privacy Guard|GPG]] to encrypt the message that you just composed using the remailer's public key.

'''Step 5: Send Encrypted Message to Remailer'''

:Prepare an email to send to the Cypherpunk remailer using the following template:

<pre>
::
Encrypted: PGP

-----BEGIN PGP MESSAGE-----
<place encrypted output here>
-----END PGP MESSAGE-----
</pre>

:Then send it.

==Notes==

* The extra headers are called 'pseudoheaders' because they do not appear in the RFC 822 headers specification for email.
* Messages to Cypherpunk remailers may be layered so they route through several different Cypherpunk remailers to decrease the odds of anyone determining who the sender is.
* Some Cypherpunk remailers are also [[Mixmaster anonymous remailer]]s and can split long Cypherpunk messages into Mixmaster packets and send them to the next remailer, if it also understands Mixmaster.
* Many Cypherpunk remailer users will repeat steps 1-4 to wrap their message in additional layers to route it through several remailers for additional privacy and security.

==See also==

* [[Anonymity]]
** [[Anonymous P2P]]
** [[Anonymous remailer]]
*** [[Mixmaster anonymous remailer]] (Type II)
*** [[Mixminion]] (Type III)
** [[Onion routing]]
*** [[Tor (anonymity network)]]
** [[Pseudonymous remailer]] (a.k.a. nym servers)
*** [[Penet remailer]]
* [[Data privacy]]
* [[Traffic analysis]]

=== Howtos and Examples ===
*[http://email.about.com/library/weekly/aa042400a.htm About.com: Send Email Anonymously — Chaining Remailers with PGP]
*[http://feraga.com/node/73 Feraga.com: Howto use a Type I Anonymous Remailer] (link not active 12 May 2010, see [https://web.archive.org/web/20070223110507/http://feraga.com/node/73 archive version])

==Further reading==

* ''Email Security'', [[Bruce Schneier]] ()
* ''Computer Privacy Handbook'', Andre Bacard ()

==Source==

[http://wikipedia.org/ http://wikipedia.org/]

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Admin: Created page with "A '''cypherpunk anonymous remailer''' is a Type I anonymous remailer that takes messages encrypted with PGP or GPG, or in..."