A content provider 101 distributes a secure container 104 storing content data encrypted using content key data, content key data encrypted using distribution key data, and encrypted usage control policy data indicating the handling of the content data to a SAM 1051 of a user home network 103 etc. The...http://www.google.com.au/patents/US7886159?utm_source=gb-gplus-sharePatent US7886159 - Data providing system and apparatus and methods of same
