> Checksums are also a pain for larger files. If a 4GB movie has a checksum, is the app supposed to read all the file in to calculate and validate the checksum

> Checksums are also a pain for larger files. If a 4GB movie has a checksum, is the app supposed to read all the file in to calculate and validate the checksum prior to playing the movie? That’s inefficient. The page did mention doing it for the header, not the whole file