gpg: WARNING: message was not integrity protected - MDC

perhop per.hopstadius at
Fri Feb 1 09:25:12 CET 2013

Hi David

Thanks for an excellent answer, that made it much clearer for me
We will check if our key has the MDC flag and see if PGP 7.1 has support for
MDC or not.
If not, then we will to use the --no-mdc-warning 

Otherwise we have to enable the MDC flag on our key and replace the old one.


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