Convert a string Filepath to unique identifier

Convert a string Filepath to unique identifier.

This is the kind of filepaths that i need to convert to a unique ID.( int would be preferred)

D:\Images\PSSL\2019\Team_Colours\Base_1\Generic.png
D:\Images\Generic.png
D:\Images\Generic\Images\2019\Base.png

the path will wary from image to image

Apoligies for not posting any code as i am bit lost on how to proceed