How about bar code? I don't know long it would be to hold a key though. That might exceed the capabilities of some bar-code scanners.
-- PGP Fingerprint: C54A C9DD 84AD C6FC D343 67C4 5195 D63A CD55 18C7 On Tuesday, May 15, 2007, at 12:23AM, "Roscoe" <[EMAIL PROTECTED]> wrote: >Hey folks, > > >I'm wanting to store my OpenPGP key on paper, I suspect this is >something someone else has already done. The motivation behind this is >that paper is the most stable backup medium I have. > > >I have tried printing out a key, then scanning and using gocr on the result. >That was unsuccessful due to the high number of errors in the OCR >phase, I suspect with a carefully selected font and font size I could >sigificantly cut down on that error rate. > >Now since even a 99.99% accuracy in the OCR phase is still going to >cause a large headache when you're trying to track down what one or >few characters got interpreted wrong amongst a screenfull of them, I >thought some error correction would be a very good idea. >(First thing that came to mind was par2+base64 but I think this might >have have a few issues.). > >Then came the realisation that printing out english letters was a >woefully inefficent way to store binary data on a piece of paper. I'm >certain there must be more compact and robust ways (ie: without subtly >similar symbols like 0 and O) way to store information. > > >So...Does anyone : > >Know of a system that can take binary data and output an image to be >printed out, that is then capable of extracting that binary data from >an imperfect scan of the image. > >OR Have any success stories regarding printing, scanning then OCRing >keys or any other data? >If so how did you do it? (what did you use for error correction, what >font, what size etc..) > >(Oh, and I'm aiming to do this with just Free/Open software.) > > >-- Roscoe > >_______________________________________________ >Gnupg-users mailing list >Gnupg-users@gnupg.org >http://lists.gnupg.org/mailman/listinfo/gnupg-users > > _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users