APPARATUS FOR PROTECTING CONTENTS USING BINDING ADDITIONAL INFORMATION AND ENCRYPTION KEY AND METHOD THEREOF

摘要

PURPOSE: A content protection device and a method thereof through combination between additional information and encoding key are provided to prevent decoding of additional information by changing an encoded key when changing additional information. CONSTITUTION: An encoding unit(150) generates an encoding key for encoding requested data and generates encoded data. An additional information managing unit(170) manages additional information including right information about the encoded data. A white box password processing unit(160) generates a white box password table for combining the encoded key and the additional information. A combined data generating unit(180) generates combined data for combining additional information through encoding of the white box encoding table.