Distributed data storage means authorization token

The invention relates to a method for storing data, the method for storing a file (101) comprises: - automatically generating (602) a distribution schedule (416); - performing (604) a specified in the distribution plan error correction method for generating fragments of files from the file by a user computer system; - sending (606) an authorization request (420) for storing the file fragments in the identified storage services in the distribution map (SD2, SD4-SD6) of the user computer system to a file management server via a network; - In response to receipt of the authorization request by the file management server, request (608, 424) of an authorization token by the file management server of each of the identified in the schedule of storage services and forwarding (610) the authorization token obtained in response to the request (428) by the file management server to the user computer system; and - storing (612) the generated file fragments in the storage media (SM2, SM4-SM6) of the identified storage services by means of credential by the authorization token bypassing the file management server by the user computer system; wherein the metadata (312) that allow the reconstruction of the file from the stored file fragments are stored in the user computer system and / or the file management server and secured against access of storage services.