I am trying to automate the encryption of files on a windows server using a .bat file I created. As long as the filename is hardcoded in the .bat file this works. I want to encrypt numerous files using this .bat file but files are not encrypted when I use wildcards in the filename like filename.txt. I've been trying various version of the following command at the DOS prompt to no avail. All attempts have returned syntax for usage.

C:\gpg -v --batch -- yes --always-trust  -e -r <encryption-key> *part-of-the-file-name*

usage: gpg [options] --encrypt [filename]

I received the same usage message with this command: C:\gpg -v --batch -- yes --always-trust -e -r --encrypt part-of-the-file-name

I tried without the -v and some of the other options and I still received the same message.

I have spent hours today searching the internet for an answer and I can't find one anywhere? Please help.