+ local id="$1"
+ local GNUPGHOME
+ local fingerprint
+ local tmpssh
+ local revokers
+
+ # tmp gpghome dir
+ export GNUPGHOME=$(msmktempdir)
+
+ # trap to remove tmp dir if break
+ trap "rm -rf $GNUPGHOME" EXIT
+
+ # import the host key into the tmp dir
+ gpg --quiet --import <"$HOST_KEY_FILE"
+
+ # get the gpg fingerprint
+ if gpg --quiet --list-keys \
+ --with-colons --with-fingerprint "$id" \
+ | grep '^fpr:' | cut -d: -f10 > "$GNUPGHOME"/fingerprint ; then
+ fingerprint=$(cat "$GNUPGHOME"/fingerprint)
+ else
+ failure "ID '$id' not found."
+ fi
+
+ # create the ssh key
+ tmpssh="$GNUPGHOME"/ssh_host_key_rsa_pub
+ gpg --export "$fingerprint" 2>/dev/null \
+ | openpgp2ssh 2>/dev/null >"$tmpssh"
+
+ # list the host key info
+ # FIXME: make no-show-keyring work so we don't have to do the grep'ing
+ # FIXME: can we show uid validity somehow?
+ gpg --list-keys --list-options show-unusable-uids "$fingerprint" 2>/dev/null \
+ | grep -v "^${GNUPGHOME}/pubring.gpg$" \
+ | egrep -v '^-+$'
+
+ # list revokers, if there are any
+ revokers=$(gpg --list-keys --with-colons --fixed-list-mode "$fingerprint" \
+ | awk -F: '/^rvk:/{ print $10 }' )
+ if [ "$revokers" ] ; then
+ echo "The following keys are allowed to revoke this host key:"
+ for key in $revokers ; do
+ echo "revoker: $key"
+ done
+ echo
+ fi