METHOD AND SYSTEM FOR SECURE OVER-THE-TOP LIVE VIDEO DELIVERY

摘要

A method is provided for managing key rotation (use of series of keys) and secure key distribution in over-the-top content delivery. The method provided supports supplying a first content encryption key to a content packaging engine for encryption of a first portion of a video stream. Once the first content encryption key has expired, a second content encryption key is provided to the content packaging engine for encryption of a second portion of a video stream. The method further provides for notification of client devices of imminent key changes, as well as support for secure retrieval of new keys by client devices. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method.

主权项

1. A method for handling secure distribution of content comprising:
initiating a media playback request and receiving a playback request response; parsing content information from the playback request response, the content information including content encryption keys, content encryption key identifiers, and content encryption key expiration times; retrieving content and manifest files from a content delivery server; detecting content encryption key rotation boundaries between periods of use of different content encryption keys in decrypting retrieved content; issuing requests to a license server ahead of a key rotation boundary to retrieve a second content encryption key to be used after a content encryption key rotation boundary is reached; and applying the second key for content decryption after the key rotation boundary is reached.