Webify service for encrypting files

[mihaigalos]

I would like to webify a service for encrypting files (oversimplification, but let's just say they are short yaml files to be encrypted). The way I envision interacting with webify is to curl it with:

• the key to be used in encryption (a separate file).
• the yaml to be encrypted.

Something like:

curl \
  -F "key=@/home/me/key" \
  -F "input_yaml=@/home/me/input.yaml" \
  localhost:8080

How do I store the key and input.yaml files on the backend side to start the process?