This workflow generates some useful checksums from file contents. It is implemented as file action which makes it easy to use!
It works pretty nice with my "Last changed files" workflow and also can be used to checksum a file in finder by setting a hotkey to the "File Selection" in "Find File".
You can download it here: https://github.com/oderwat/alfredworkflows/raw/master/Checksums.alfredworkflow
My other workflows are here: https://github.com/oderwat/alfredworkflows
Versions:
V1.0 - Initial releases