This may be an older question; but I recently had the same need.
My goal was to be comprehensive (search all files) and not require additional software, so it uses the command prompt and any text editor.
Here is what I found as a workable solution:
- open a cmd prompt
- Enter the command: cipher /s:c:\ > encryption.txt
- Open the file "encryption.txt"
- To find encrypted folders, search for "will be encrypted"
- To find encrypted files, search for "E" at the beginning of a line
Without parameters, Cipher lists state of the current directory and all files in it. The /s parameter tells it to recurse, and c:\ gives it the starting point. From there, "> ..." just redirects the output.
Cipher's output for encrypted files and folders look like this:
New files added to this directory will be encrypted.
Cipher's output for normal files and folders look like this:
New files added to this directory will not be encrypted.
Hope that helps.