ELECTRONIC CONTENT DISTRIBUTION BASED ON SECRET SHARING

摘要

A method for distributing information includes distributing an item of encrypted information to a plurality of clients and distributing respective key-shares to the clients, such that each client will require a key-share that has been distributed to at least one other client in order to reconstruct a key for decrypting the encrypted information. Upon receiving from a first client a report that a second client requested and received a respective one of the key-shares from the first client, a record of a delivery of the item to the second client is made responsively to the report.