DRM SERVICE PROVISION APPARATUS AND METHOD, AND CONTENT PLAYBACK APPARATUS AND METHOD USING DRM SERVICE

摘要

A digital rights management (DRM) provision apparatus includes a first encryptor configured to encrypt content using a first white-box cryptograph (WBC)-based encryption, in which a first secret key is internalized, and a symmetric key-based encryption using a content encryption key; a second encryptor configured to encrypt the content encryption key using a second WBC-based encryption in which a second secret key is internalized; and a transmitter configured to transmit the encrypted content and the encrypted content encryption key to a content playback apparatus of a registered user.