Patent ID: 8264984
Filing Date: 2012-09-11
Classification: G06F,H04L,H04W

Abstract:
1. A data transmitting apparatus comprising: a processor configured to generate a packet data including a random number that is different from random numbers transmitted in other packet data; a communication interface connected to a first network and configured to transmit said packet data to a data receiving apparatus, and receive a response message from said data receiving apparatus, said response message including first information generated by said receiving apparatus based on a shared secret key shared with said data receiving apparatus; a computing unit configured to compute second information based on said shared secret key; a comparing unit configured to compare said first information and said second information; a timer configured to measure a response time of said response message from said data receiving apparatus; and a judgment unit configured to judge whether content data transmitted to said data receiving apparatus will be limited in usage right based on a result of said comparison by said comparing unit and a result of said measurement by said timer, wherein said judgment unit determines whether said data transmitting apparatus and said data receiving apparatus are connected through a Wide Area Network (WAN) based on a result of said judging, and said content data transmitted to said data receiving apparatus is limited in usage right when said judging unit determines that said data transmitting apparatus and said data receiving apparatus are connected through said WAN.