/[pkg-mixmaster]/trunk/Mix/conf/pgponly.hlp
ViewVC logotype

Diff of /trunk/Mix/conf/pgponly.hlp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1 by rabbi, Wed Oct 31 08:19:51 2001 UTC revision 20 by rabbi, Tue Dec 11 04:33:02 2001 UTC
# Line 1  Line 1 
1  The remailer accepts PGP-encrypted messages. You can get the public  You can use PGP to encrypt messages sent to this remailer if you for
2  PGP key by sending mail with Subject: remailer-key to  some reason are unable to use the Mixmaster client software. However,
3  <%RMA>.  while PGP will securely encrypt the content of a message that you are
4    sending to the remailer, submitting messages to the remailer that are
5  If you want to send an anonymous message, first create a file with two  merely PGP encrypted without the use of the Mixmaster client software
6  colons in the first line of your message, and the line "Anon-To:  greatly increases the risk of third parties being able to determine the
7  address" in the following line. Follow that with a blank line and  identity of the sender (you).
8  begin your message. For example:  
9    This remailer primarily supports the ability to submit messages for
10    remailing without requiring the Mixmaster client software for backwards
11    compatibility with older remailer client software.
12    
13    If you are able to use the Mixmaster software with your operating system
14    (chances are you can), it is highly recommended that you use the
15    Mixmaster client software instead. See the earlier section in this help
16    file on how to obtain a copy of the Mixmaster client software.
17    
18    If you cannot use the Mixmaster software, want to use an anonymous
19    remailer, and are willing to accept reduced security, you can do the
20    following:
21    
22    Send email with Subject: remailer-key to <%RMA> to obtain a copy of the
23    remailer's PGP key.
24    
25    Then do the following:
26    
27    1)      create a file containing your message
28    2)      insert a BLANK LINE as the first line of the file
29    3)      Insert a "::" as the second line of the file
30    4)      Insert "Anon-To: final_recipient@destination_domain.com" as the
31            third line of the file.
32    
33    At this time, the file should look as follows:
34    
35  ==================================================================  ==================================================================
36    
37  ::  ::
38  Anon-To: beth@example.org  Anon-To:  final_recipient@destination_domain.com
39    
40  This is some anonymous mail.  This is some anonymized email.
41  ==================================================================  ==================================================================
42    
43  Then, encrypt it with the PGP key of this remailer. Finally, send  5)      Now encrypt the file with the PGP key of this remailer.
44  <%RMA> a message that begins with two colons  
45  and the line "Encrypted: PGP", followed by your encrypted message:  Finally, email the encrypted file to <%RMA> as shown in the example
46    below.
47    
48    The line "Encrypted: PGP" instructs the remailer to decrypt the message
49    and process its contents.
50    
51  ==================================================================  ==================================================================
52  From: joe@test.com  From: remailer_user@sender_domain.com
53  To: %RMA  To: %RMA
54    Subject: anonymous message
55    
56  ::  ::
57  Encrypted: PGP  Encrypted: PGP
# Line 30  Version: 2.6.3i Line 61  Version: 2.6.3i
61    
62  owE1jMsNwjAUBH3gZMk9PClnUoBPUANpwElW2OBPZD8H0gd1UCP2gduuNDNfIcSH  owE1jMsNwjAUBH3gZMk9PClnUoBPUANpwElW2OBPZD8H0gd1UCP2gduuNDNfIcSH
63  T4zCbQmtlbzGFM9T0jSD7QVvEzaPcUlBSSWHQclbnR9YWJNp5BFSLdR9CijF3NGx  T4zCbQmtlbzGFM9T0jSD7QVvEzaPcUlBSSWHQclbnR9YWJNp5BFSLdR9CijF3NGx
64  ybry/1Rsqn4la3a0JiIhLvnYGCu9HFtiC8oIxnlkeuIYe+EH  ybry/1Rsqn4la3a0JiIhLvnYGCu9HFtiC8oIxnlkeuIYe+EH =HgDq
 =HgDq  
65  -----END PGP MESSAGE-----  -----END PGP MESSAGE-----
66  ==================================================================  ==================================================================
67    
68  The remailer will decrypt the message and forward it anonymously. The  Even though PGP encryption in itself is very secure, not using the
69  following e-mail would be delivered to <beth@example.org>:  Mixmaster client exposes some information to parties desiring to
70    compromise your privacy. This information leakage permits what is known
71  ==================================================================  as "traffic analysis". For example, if someone receives anonymous
72  From: %RMN <%RAA>  messages soon after you sent encrypted messages to a remailer it is
73  Comments: This message did not originate from the Sender address above.  likely that you are the sender of those messages.
74          It was remailed automatically by anonymizing remailer software.  
75          Please report problems or inappropriate use to the  To partially compensate for this information leak, you can instruct the
76          remailer administrator at <%CA>.  remailer to delay your messages for some time or send the remailer empty
77  To: beth@example.org  messages to make such analysis harder:
   
 This is some anonymous mail.  
 ==================================================================  
78    
79    If you use the line "Null:" instead of "Anon-To:", the remailer will
80    simply discard your message.
81    
82  You will often want to include a Subject or other header lines in your  You can add a "Latent-Time:" header to the remailer to retain your
83  anonymous mail. You can insert header lines in the anonymous message  message for some time before forwarding it.  "Latent-Time: +2:00" would
84  by preceding them with a "##" line in the unencrypted file:  delay the message for two hours. You can use a random delay by adding
85    "r", for example "Latent-Time: +5:00r" would delay the message for up to
86    five hours. For example:
87    
88  ==================================================================  ==================================================================
89    
90  ::  ::
91  Anon-To: jim@example.org  Anon-To:  final_recipient@destination_domain.com
92    Latent-Time: +2:00
93    
94  ##  This is some anonymized email.
95  Subject: Re: Twofish  ==================================================================
 In-Reply-To: Your message of "Tue, 12 Jan 1999 22:47:04 EST."  
         <199901130247.WAA02761@example.com>  
   
 This reply is anonymous.  
 ==================================================================  
   
 Even though PGP encryption is very secure, this still leaves some  
 information open to attackers. For example, if someone gets an  
 anonymous message whenever you have sent an encrypted message to a  
 remailer, it is likely that you are the sender of those messages.  
 You can instruct the remailer to delay your messages for some time  
 or send it empty messages to make such analysis harder:  
96    
 If you use the line "Null:" instead of "Anon-To:", the remailer will  
 discard your message. The "Latent-Time:" header causes the remailer  
 to keep your message for some time before forwarding it.  
 "Latent-Time: +2:00" would delay the message for two hours. You  
 can use a random delay by adding "r", for example  
 "Latent-Time: +5:00r" would delay the message for up to five hours.  
97    
98  You can, of course, use another remailer to send the message to  You can chain remailers by using another remailer to send the message to
99  <%RMA> anonymously. For example, take the message  <%RMA> anonymously. For example, take the message
100    
101  ==================================================================  ==================================================================
102    
103  ::  ::
104  Anon-To: %RMA  Anon-To: %RMA
105    
# Line 95  Version: 2.6.3i Line 111  Version: 2.6.3i
111    
112  owE1jMsNwjAUBH3gZMk9PClnUoBPUANpwElW2OBPZD8H0gd1UCP2gduuNDNfIcSH  owE1jMsNwjAUBH3gZMk9PClnUoBPUANpwElW2OBPZD8H0gd1UCP2gduuNDNfIcSH
113  T4zCbQmtlbzGFM9T0jSD7QVvEzaPcUlBSSWHQclbnR9YWJNp5BFSLdR9CijF3NGx  T4zCbQmtlbzGFM9T0jSD7QVvEzaPcUlBSSWHQclbnR9YWJNp5BFSLdR9CijF3NGx
114  ybry/1Rsqn4la3a0JiIhLvnYGCu9HFtiC8oIxnlkeuIYe+EH  ybry/1Rsqn4la3a0JiIhLvnYGCu9HFtiC8oIxnlkeuIYe+EH =HgDq
 =HgDq  
115  -----END PGP MESSAGE-----  -----END PGP MESSAGE-----
116  ==================================================================  ==================================================================
117    
118  encrypt it with the PGP key of the Replay remailer and send the  Next, encrypt the message with the PGP key of the <%RMN> and send the
119  double-encrypted message to <remailer@replay.com>.  twice-encrypted message to <%RMA>. Similar to a Russian doll, containing
120    increasingly smaller dolls inside the each outer doll, you can layer
121    multiple encryption layers and remailer hops around your message. If
122    this sounds confusing, just use the Mixmaster client software instead.
123    
124  If you send your messages through a chain of several independent  If you send your messages through a chain of several independent
125  remailers, it will be hard to trace the anonymous message back to  remailers, it will be become increasingly difficult, though not
126  you. A much more secure solution, however, is to use Mixmaster for  necessarily impossible, to trace the anonymous message back to you. A
127  sending anonymous mail.  vastly more secure solution is to use the Mixmaster client software to
128    send your anonymous mail.
129  PGP encryption can also be used to receive mail at an anonymous  
130  address. Please see <http://www.publius.net/n.a.n.html>, the home page  Some remailers supporting PGP encrypted messages offer pseudonymous
131  of the nym.alias.net pseudonym server, for more information.  "nym" service that allow you to not only send emails privately, but also
132    receive emails without enabling the sender to determine your recipient
133    destination email address. For more information about such nym services,
134    see the following URL's.
135    
136    http://lexx.shinn.net/nym/
137    
138    http://riot.eu.org/anon/nym.html
139    
140                                    *****
Legend:
Removed from v.1  
changed lines
  Added in v.20
  ViewVC Help
Powered by ViewVC 1.1.5