Distributed data storage by means of authorisation token

Abstract

The invention relates to a method for storing data, wherein the method, in order to store a file (), comprises: —automatic generation () of a distribution schedule (); —performance () of an error correction method, which is specified in the distribution schedule, for generating file fragments from the file by a user computer system; —sending () of an authorisation enquiry () for storing the file fragments in the memory services (SD, SD-SD) identified in the distribution schedule from the user computer system to a file management server via a network; —in response to reception of the authorisation enquiry by the file management server, requesting () of an authorisation token by the file management server from each of the memory services identified in the distribution schedule and forwarding () of the authorisation token () obtained in response to the request to the user computer system by the file management server; and —storage () of the generated file fragments in the storage media (SM, SM-SM) of the identified memory services by means of authorisation verification by the authorisation token by means of the user computer system bypassing the file management server; wherein metadata () that permit the reconstruction of the file from the stored file fragments are stored in the user computer system and/or the file management server and are protected against access by the memory services.