The easiest way is to publish your code to a publicly controlled source with a signature on or before your desired date. Not sure if there's a *better* way.
On Dec 1, 2016 7:43 PM, "Bertram Scharpf" <li...@bertram-scharpf.de> wrote: > Hi, > > we all know that kidnappers do publish a picture of their > hostage holding up a todays newpaper. The purpose of this is > to proof that the victim was alive _after_ a certain point > of time. I want to do the opposite. I want to make evidence > that I created a document _before_ a certain point of time. > > I could use self-darkening ink but that won't be reflected > in a JPEG scan and my pen won't make the job that TeX does. > I could sign a newspapers home page but that cannot be > reproduced at a later point of time to verify the signature. > > Is there a standard way in GnuPG and in the keyholder > infrastructure to accomplish this task? > > Thanks in advance. > > Bertram > > > -- > Bertram Scharpf > Stuttgart, Deutschland/Germany > http://www.bertram-scharpf.de > > _______________________________________________ > Gnupg-users mailing list > Gnupg-users@gnupg.org > http://lists.gnupg.org/mailman/listinfo/gnupg-users >
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