Protecting media content

A content sink device configured to connect to a content source device to receive digital media content from the content source device, the content source device comprising:

• a connection module configured to:
• establish a connection to the source device;
• receive the encrypted digital media content from the source device over the connection;
• and
• decrypt digital media content received over the connection using a first cipher with a connection key;
• and
• a protection module configured to send a digital certificate identifying the sink device to the source device over the connection.

A method for connecting a content source device to a content sink device to transmit digital media content to the content sink device, the method comprising:

• establishing a connection to the sink device;
• encrypting digital media content for transmission across the connection using a first cipher with a connection key;
• transmitting the encrypted digital media content to the sink device over the connection;
• preventing the sink device from using the digital media content without authorisation;
• receiving a digital certificate identifying the sink device;
• verifying the digital certificate;
• determining if the digital certificate identifies a sink device authorised to receive digital media content over the connection;
• and
• if the determination is positive, enable the sink device to use the digital media content.