GnuPG - signed Telefax communication

Andrew Gallagher andrewg at
Fri Jan 14 18:40:28 CET 2022

On Fri, 2022-01-14 at 16:42 +0000, Стефан Васильев via Gnupg-users
> The --begin etc. markers should be used to detect where
> the OCR scanned document begins and ends to have later
> a good signature.

If you are relying on OCR to reconstitute a bitwise-perfect message
(because that's the only way a signature will validate) then you're
asking for trouble, unless you're using a very restricted character set
with at most one whitespace codepoint.

> the receiver then OCR scans the document and decodes the QR-code

If QR is an option, why not encode the entire message in QR?

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