Leigh S. Jones
Wed May 22 15:24:01 2002

This is commonly done using postmarks -- you seal 
the printed text into a letter addressed to yourself,
mail it, and then don't open it on receipt.  Because
this form of protection has been defended in the
courts in some places with success in the past there
is some safety.

Assume clearsigning in all of the discussions below:

An alternative that probably has not been tested in
the courts is to sign the text with gpg, e-mail it to 
a friend (collecting impartial timestamps from the 
e-mail servers along the way in the headers).  Your 
friend then signs the e-mail (including the headers 
with time stamps) with gpg and sends it back to 
you (collecting more time stamps) for you to sign.

At this point, the smartest thing to do is to print 
out the complete text, print out your two public
keys, sign and date every page, and then mail it
all to yourself in a sealed envelope.  Werner's
idea about the public forum adds strength to the
mix also, assuming that the moderator of the
forum will allow the "garbage" to remain in the

Why use a friend?  If ever challenged in court he
can be called to testify to the truth of your 

----- Original Message ----- 
From: "Aurelio Turco" <>
To: <>
Sent: Tuesday, May 21, 2002 9:50 PM
Subject: Plagiarism

> First party sends clear text to second party
> or publishes it for the public at large.
> Third party sees the data and claims authorship.
> Plagiarism.
> Is it possible to protect against
> (third party) plagiarism using gpg alone
> short of having to encrypt the data?
> Cheers.
> Aurelio.
> PS: Anyone know how this is usually done?
> Does one register the data with a lawyer
> or a copyright officer or what?
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