Using Automator or AppleScript to encrypt/decrypt with OpenSSL

I would like to know how to use Automator or AppleScript to create a droplet that would compress/uncompress (tar.gz) and encrypt/decrypt with OpenSSL files and/or directories dropped in it. The workflow on what the droplet will do to encrypt would be something like this: - Files/directory is dropped on droplet - Files/directory is compressed - A password prompt is presented - OpenSSL is used to encrypt file, file is renamed to *.encrypted To decrypt: - File is dropped on droplet - If file is named *.encrypted, a password prompt is presented. If not, do encrypt workflow - File is decrypted, and renamed - Files is uncompressed Anyone?