Patent ID: 8345868
Filing Date: 2013-01-01
Classification: H04L,H04N

Abstract:
1. A data transfer system that is configured to transfer a plurality of information groups comprising a plurality of kinds of information corresponding to content data from a first device to a second device, said data transfer system comprising: said first device, said first device configured to encrypt a partial information group of said plurality of information groups and configured to transfer an encrypted information group to said second device, said first device configured to generate an omission information group with information having a predetermined relation omitted from at least remaining information groups of said plurality of information groups, and said first device configured to encrypt and configured to transfer said omission information group to said second device, when a partial kind of information of said plurality of information groups has said predetermined relation; and said second device, said second device configured to decrypt said partial information group and said omission information group, and said second device configured to restore omitted information based on said omitted information having said predetermined relation comprised in a transferred partial information group and configured to add said restored omitted information to said transferred omission information group.