Paperkey (Was: Re: )

john espiro john_espiro at
Thu Mar 11 09:16:47 CET 2010

Sorry for the empty subject... fixed now

From: john espiro <john_espiro at>
To: gnupg-users at
Sent: Thu, March 11, 2010 7:25:45 AM

I am using paperkey 1.2 from
dmtxwrite version 0.7.3
libdmtx version 0.7.3

If I run this command:
gpg --export-secret-key mykey at | paperkey --ignore-crc-error  --output-type raw | dmtxwrite -e8 -f png > my_pdf_file.png

I get the 2D barcode generated correctly -- if the key is 1024 or 2048.  If I try this with a secret key that is 4096, I am left with 20x20 pixel image that in no way looks complete.  I wonder if there's a limitation with either paperkey or dmtxwrite, or if I am doing something wrong.

If this isn't the right forum, please let me know...

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