DRM SYSTEM OF TOKEN-BASED AND CONTENTS PLAY METHOD USING DRM SYSTEM OF TOKEN-BASED

摘要

PURPOSE: A token-based DRM(Digital Rights Management) system and a content playing method using the system are provided to guarantee the privacy and anonymity of a customer by using an authentication method using two kinds of factors as a token-based authentication scheme. CONSTITUTION: A content providing server(120) stores contents provided by a CP(Contents Provider). A license providing server(130) stores a license key generated for the contents by the content providing server. The servers provide the license key from the content providing server to the license providing server through safe communication. A protocol is designed for safely transmitting a license charge to the content providing server and receiving protected contents and secret information for receiving the license key.