// COMPLETE THREAD

Remailers

3 expanded posts ยท every known parent and child

NODE 81600eabRemailers
I contacted Eric Hughes, and he suggested that my question was of
general enough interest to share with the group. Here is my question
followed by Eric's response:


 ----------

Hi,

You pointed me in the direction of hal's remailer at
        soda.berkeley.edu:pub/cypherpunks
and I have the code now. However, since I'm not that familiar
with perl, I'm having trouble figuring out exactly how it works.
Do you know if anyone has written a technical description of
how the remailer works?

I would like to build a remailer too, and I wanted to try and
understand how Hal's remailer works first. Also, do you know if
there is code available for any other remailers in shell script
or C?

Thanks a lot,
Avi Rubin

 -----------


Chael Hall wrote a remailer in C.  He should be willing to share his
code.  Ask on the list.

The question you asked me about understanding the remailer operation
is of general enough interest that you ought to just ask the list at
large.

In specific, I don't know of any such theory of operation.

Eric
NODE 4da6e03dREMAIL: send-mail.c (alpha version)
>I would like to build a remailer too, and I wanted to try and
>understand how Hal's remailer works first. Also, do you know if
>there is code available for any other remailers in shell script
>or C?
>
>Thanks a lot,
>Avi Rubin
>
> -----------
>
>Chael Hall wrote a remailer in C.  He should be willing to share his
>code.  Ask on the list.
>
>Eric

     The code that is included here was not intended for release yet.
There are several bugs and oversights.  I have been going through a
complete redesign of Send-Mail (SM), but haven't coded any of it yet.
What is here is the old source patched to do most of what I want it to
do.  You can see that there is support for a file processor and indeed
PGP works okay with it, but I don't *like* the way they work together,
so I do not recommend using the processor feature.  In the redesigned
version, the remailer operator can setup as many file processors as
he/she wants.  A file can be processes several times before it gets
sent.

     Most of the important stuff that would differ can be set in the
.send-mailrc file (which should be in the user's home directory, it
can be linked to another place) or is defined at the beginning.  Let
me know what you think; I am open to suggestions.

Chael Hall

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end
NODE da4603a7Remailers
I wrote:
>The question you asked me about understanding the remailer operation
>is of general enough interest that you ought to just ask the list at
>large.

>In specific, I don't know of any such theory of operation.

When I wrote this, I wasn't thinking.  When I wrote the original
remailer code, I posted it to alt.hackers along with a theory of
operation.  I don't know if I have a copy of that anymore.

Can someone provide it?  It was from last September.  Who gets
Usenet on CD here, anyway?

Eric