DATA PROVIDING SYSTEM AND ITS METHOD

摘要

PROBLEM TO BE SOLVED: To provide a data providing system which can protect the profit of persons concerned in a data providing device. SOLUTION: An EMD service center 102 generates a stored key file KF by ciphering title deed data 106 and content key data Kc that a content provider 101 generates with key data for distribution and sends the file to a content provider 101. The content provider 101 supply a secure container 104 including a content file CF containing the content data C deciphered by using the content key data Kc and the key file KF received from the EMD service center 102 to SAM 105, etc., of a user home network 103.