Patent ID: 7627905
Filing Date: 2009-12-01
Classification: G06F,H04L

Abstract:
1. A content transfer system for transferring content from a content transmitting apparatus to a content receiving apparatus through an external network in consideration of content protection, said system comprising: authentication process executing means for executing an authentication process between said content transmitting apparatus and said content receiving apparatus and sharing authentication information therebetween; and content transfer process executing means for encrypting content to be transferred over the external network corresponding to a content request from said content transmitting apparatus and transferring the encrypted content from said content transmitting apparatus to said content receiving apparatus, wherein: said content transfer process executing means starts a transfer process for the encrypted content over the external network in response to confirmation that the content request contains a keyword indicating that the content receiving apparatus has been authenticated, said keyword indicating that the content receiving apparatus has been authenticated is a keyword in a check level that said content transmitting apparatus supports, the keyword being one of a plurality of types of keywords that are different in check levels representing accuracy of authentication checks, and said content transfer process executing means informs said content receiving apparatus of information regarding the keyword in the check level that the content transmitting apparatus supports.