> where it fetches the public key from? From the configured [SKS](http://enwp.org/Key_server_%28cryptographic%29#External_links):
$ ack ^keyserver ~/.gnupg/gpg.conf
keyserver hkp://keys.gnupg.net
keyserver-options auto-key-retrieve verbose no-include-revoked
It does not really matter. The servers sync their databases regularly.
The hostname keys.gnupg.net is a DNS round-robin pool.
> key server supports secured key requests over TLS?
No, that's pointless.
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