RSF is very similar to except it works on file level.
Pseudocode
The procedure to generate a RSF file is as follows:
def create_rsf(plaintext):
deflated_bytes = zlib.compress(plaintext, level=9)
# Server stores this part and will send it to the client when zoning-in
header = deflated_bytes[:64]
# Client stores this part
body = deflated_bytes[64:]
