Patent ID: 8095578

Claim:
A data providing system for distributing content data, comprising: a management apparatus that receives, via a network, content data, content key data, and usage control policy data from a data providing apparatus and that provides, via the network, to said data providing apparatus, a key file containing said content key data and the usage control policy data, the usage control policy data including operating rules for said content data, at least a part of said key file being encrypted; said data providing apparatus that encrypts said content data using said content key data stored in said key file and that distributes, via the network, a secure container including said encrypted content data, said key file, and signature data of said data providing apparatus, to a data processing apparatus; and said data processing apparatus that decrypts said secure container and said key file to obtain said content key data from said key file, that decrypts said encrypted content data based on the usage control policy data stored in said key file, and that stores said decrypted content data.