CONTENT DISTRIBUTION METHOD, CONTENT DISTRIBUTION SYSTEM, SOURCE DEVICE, AND SINK DEVICE

摘要

Provided is a content distribution method which allows a source device to safely distribute copyrighted content to a sink device in response to a request from the sink device as a trigger. The content distribution method includes a list transmission step S11, a content request step S12, and a content transfer step S13. In S11, a source device (30) transmits metadata which includes a format identifier indicating that content is distributable under the specification of the HDCP and the URL of the content. In S12, a sink device (40a) makes a request for content identified by the URL after adding information necessary for authentication processing to the request. In S13, the source device (30) creates an encryption key by performing the authentication processing on the sink device (40a) in accordance with the information necessary for the authentication processing, encrypts the content using the encryption key, and transfers the encrypted content to the sink device (40a).