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
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 begin 600 send-mail.tar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end
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
participants (3)
-
Eric Hughes
-
nowhere@bsu-cs.bsu.edu
-
rubin@citi.umich.edu