Ip-based mobile device authentication for content delivery

A computer-readable medium comprising:

• one or more instructions that, when executed by one or more processors of a device, cause the one or more processors to:
• receive, from a mobile device, a first request, to determine a public-facing Internet Protocol (IP) address of the mobile device;
• transmit, in response to the first request and to the mobile device, the public-facing IP address of the mobile device;
• receive a second request, from the mobile device, to authenticate the mobile device to receive downloadable content, the second request including the public-facing IP address of the mobile device;
• receive a third request, from the mobile device, for a license to receive a particular content item;
• determine whether the public-facing IP address, corresponding to the mobile device, is valid for the particular content item;
• and
• transmit the license to the mobile device when the public-facing IP address is determined to be valid for the particular content item, where the license includes one or more decryption keys for the particular content item.

A method, implemented by a mobile device, comprising:

• transmitting, by the mobile device, a message to an Internet Protocol (IP) discovery server;
• receiving, by the mobile device, in response to the message, a public-facing IP address of the mobile device;
• transmitting, by the mobile device, a second message to an authentication sever, to authenticate the mobile device for downloading of video content, where the second message includes a user identifier (ID) of the user of the mobile device, a unique device identifier (UDID) associated with the mobile device, and the public-facing IP address of the mobile device;
• transmitting, by the mobile device, a request for a license for a particular video content item, the request including the public-facing IP address of the mobile device, where the license is granted or denied based on the validity of the public-facing IP address for the particular video content and based on the UDID associated with the mobile device;
• receiving, by the mobile device, a license for the particular video content;
• and
• playing, by the mobile device, the particular video content, by decrypting chunks of data, corresponding to the video content, using one or decryption keys obtained from the license.