Hi! GnuPG 2.5.1 has the option --assert-signer and 2.4.6 will have this option as well:
--assert-signer fpr_or_file
This option checks whether at least one valid signature on a file
has been made with the specified key. The key is either specified
as a fingerprint or a file listing fingerprints. The fingerprint
must be given or listed in compact format (no colons or spaces in
between). As of now only SHA-1 fingerprints are allowed. This
option can be given multiple times and each fingerprint is checked
against the sign‐ ing key as well as the corresponding primary key.
If fpr_or_file specifies a file, empty lines are ignored as well as
all lines start‐ ing with a hash sign. With this option gpgsm is
guaranteed to return with an exit code of 0 if and only if a
signature has been encoun‐ tered, is valid, and the key matches one
of the fingerprints given by this option.
Tarcked as https://dev.gnupg.org/T7286
Hope that helps a bit.
Salam-Shalom,
Werner
--
The pioneers of a warless world are the youth that
refuse military service. - A. Einstein
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