At 22:19 10-12-2008, LuKreme wrote:
I ssh to the server and then I sudo su (so I am sure I have discarded
my own login environment, I do not normally do this)

mail# gpg --list-keys /etc/mail/spamassassin/sa-update-keys/pubring.gpg
gpg: error reading key: No public key

gpg --no-default-keyring --keyring /etc/mail/spamassassin/sa-update-keys/pubring.gpg

At least on my FreeBSD, there's no man page for gpg, and the --help

man gpg works for me.

Riiight, but the public key I put in the keychain does all that, no?
I'm still unclear on how the --gpgkey makes it more secure.  If the
file is signed, the signature is checked against the public key that I
have in pubring.gpg.  What does the gpgkey do?

There may be several keys in a keyring. When running an automated process to verify a file, you also have to validate who signed the file. That's where the gpgkey comes in. Simply checking the signature is not enough.

Regards,
-sm

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