The FileBlob object stores any type and size of data into
the file of your choice (through the Filename
You should use FileBlob when you have large amounts
of data to be encrypted/decrypted. The definition of
'large amounts' depends on your application - it
can even be a few hundred megabytes. wodCrypt will never load
the full file at once - it will read/write to it as needed,
using smaller chunks.
In addition to the following properties and methods, a FileBlob can be
also referenced through its Blob interface. For the Blob interface
specification, please look here.