Patent attributes
Machines, systems and methods of uploading data files, the method comprising a first client machine dividing a first file into N data chunks to be uploaded to a server, wherein the N data chunks are of size kX, where k is an integer and X is size of a minimal size data chunk, wherein X is known by the server and by at least a second client machine used for uploading a second file to the server in data chunks of size k′X; and uploading the first file to the server, wherein a first unique signature is calculated for the first file based on applying a signature function to a collection of signatures calculated for the minimal size data chunks of size X that make up the data chunks of size kX in the first file, wherein the uploading of the first file is accomplished by uploading the data chunks of size kX to the server in any order.
