Getting the gpg key from an email address also checks gpg config for default-key

src/freedombone-utils-gpg

@@ -262,8 +262,34 @@ function gpg_pubkey_from_email {
     key_id=
     if [[ $key_owner_username != "root" ]]; then
         key_id=$(su -c "gpg --list-keys $key_email_address" - $key_owner_username | sed -n '2p' | sed 's/^[ \t]*//')
+
+        # If the default key is specified within gpg.conf
+        if [ -f /home/$key_owner_username/gpg.conf ]; then
+            if grep -q "default-key" /home/$key_owner_username/gpg.conf; then
+                default_gpg_key=$(cat /home/$key_owner_username/gpg.conf | grep "default-key")
+                if [[ "$default_gpg_key" != *'#'* ]]; then
+                    default_gpg_key=$(cat /home/$key_owner_username/gpg.conf | grep "default-key" | awk -F ' ' '{print $2}')
+                    if [ ${#default_gpg_key} -gt 3 ]; then
+                        key_id=$(su -c "gpg --list-keys $default_gpg_key" - $key_owner_username | sed -n '2p' | sed 's/^[ \t]*//')
+                    fi
+                fi
+            fi
+        fi
     else
         key_id=$(gpg --list-keys $key_email_address | sed -n '2p' | sed 's/^[ \t]*//')
+
+        # If the default key is specified within gpg.conf
+        if [ -f /root/gpg.conf ]; then
+            if grep -q "default-key" /root/gpg.conf; then
+                default_gpg_key=$(cat /root/gpg.conf | grep "default-key")
+                if [[ "$default_gpg_key" != *'#'* ]]; then
+                    default_gpg_key=$(cat /root/gpg.conf | grep "default-key" | awk -F ' ' '{print $2}')
+                    if [ ${#default_gpg_key} -gt 3 ]; then
+                        key_id=$(gpg --list-keys $default_gpg_key | sed -n '2p' | sed 's/^[ \t]*//')
+                    fi
+                fi
+            fi
+        fi
     fi
     echo $key_id
 }