Patent attributes
A computer implemented method in a system comprising an actor authorization node, an access right storage node and a file record node. The method comprises receiving, from a computing device, a request to access a file, the request comprising information identifying an actor making the request and a file to be accessed, obtaining an indication from the actor authorization node whether or not the identified actor is recorded on the actor authorization node as trustworthy, obtaining an indication from the access right storage node of the access right the identified actor has to the identified file, if the identified actor has been indicated by the actor authorization node as being trustworthy and by the access right storage node as having access rights, obtaining file storage and access details from the file record node and sending the file storage and access details to the computing device or using the file storage and access details to access the stored file and sending the accessed file to the computing device. The file storage and access details comprise at least one of a file storage location, a file encryption key, a calculated characteristic of the stored file and a calculated characteristic of an encrypted version of the stored file.
