Daniel Kahn Gillmor wrote:
with more modern versions of gnupg, you can just use:gpg --with-fingerprint --import-options show-only --import < public-key-file.asc
FWIW, I've used "gpg --with-fingerprint public-key-file.asc" for what seems like years to do this sort of quick fingerprint check of keys. It's particularly handy with linux distribution package signing keys, which are typically not something I have any need to import to my keyring.
On a fedora-25 system: $ gpg --version gpg (GnuPG) 1.4.22 $ gpg --with-fingerprint /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-25-primary pub 4096R/FDB19C98 2016-03-31 Fedora 25 Primary (25) <fedora-25-prim...@fedoraproject.org> Key fingerprint = C437 DCCD 558A 66A3 7D6F 4372 4089 D8F2 FDB1 9C98 $ gpg2 --version gpg (GnuPG) 2.1.13 $ gpg2 --with-fingerprint /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-25-primary pub rsa4096 2016-03-31 [SCE] C437 DCCD 558A 66A3 7D6F 4372 4089 D8F2 FDB1 9C98 uid Fedora 25 Primary (25) <fedora-25-prim...@fedoraproject.org>I haven't looked at the documentation for --with-fingerprint in a while, but it does seem like it's at least leaving out some details regarding its use on key files which are not imported.
I have no idea whether those differences are intended and should simply be documented or it's considered a bug that --fingerprint and --with-fingerprint differ in handling unimported keys.
Also, both 2.1.13 on fedora 25 and 2.1.22 on fedora rawhide, the command above complains about the show-only option:
$ gpg2 --version gpg (GnuPG) 2.1.22 $ gpg2 --with-fingerprint --import-options show-only --import < /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-25-primary gpg: unknown option 'show-only' gpg: invalid import optionsIs there a typo in that command or is show-only not in the latest release of the 2.1 branch?
-- Todd ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The most overlooked advantage to owning a computer is that if they foul up, there's no law against whacking them around a little. -- Eric Porterfield
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