Devices, methods, and computer-readable medium for secure frame management. The techniques disclosed herein provide an intelligent method for detecting triggering items in one or more frames of streaming video from an Internet Protocol camera. Upon detection, the camera transmits one or more frames of the video over a network to a computing device. Upon detecting a triggering item in a frame of the video stream, the computing device can begin a streaming session with a server and stream the one or more frames of video and accompanying metadata to the server. The frames, metadata, and associated keys can all be encrypted prior to streaming to the server. For each subsequent segment of video frames that includes the triggering item, the server can append the frames of that segment to the video clip in an encrypted container. Once the triggering item is no longer detected, the streaming session can be closed.

Methods and systems to authorize devices and/or perform other actions based on identifying content distributors are described. In some example embodiments, the methods and systems access video content playing at a client device, calculate fingerprints of a portion of the video content, identify a distributor of the video content based on the fingerprints, and perform an action in response to the identification of the distributor of the video content, such as actions to authorize the client device or other associated devices (e.g., second screens) to receive content from the distributor, actions to present sponsored content to the client device or associated devices, and so on.

Methods and systems to authorize devices and/or perform other actions based on identifying content distributors are described. In some example embodiments, the methods and systems access video content playing at a client device, calculate fingerprints of a portion of the video content, identify a distributor of the video content based on the fingerprints, and perform an action in response to the identification of the distributor of the video content, such as actions to authorize the client device or other associated devices (e.g., second screens) to receive content from the distributor, actions to present sponsored content to the client device or associated devices, and so on.

A method for auditing an advertisement impression in which a first advertisement was presented in conjunction with first media content is disclosed. The method generally comprises transmitting to a plurality of second computing devices a plurality of randomly generated first cryptographic proofs; receiving, a first message from a second computing device indicating that the first advertisement was presented in conjunction with the first media content; and evaluating the first targeting model for the first advertisement based on the at least one media content classifier.

Aspects of the present disclosure are drawn to a digital rights management (DRM) server device for use with a stream of encoded audio/video data and an n×m array of client devices, n being a first positive integer, m being a second positive integer. Each client device being configured to display a respective display content, at least one of the n×m array of client devices being configured to play audio content. The DRM server device includes a memory and a processor configured to execute instructions stored on the memory. This causes the DRM server device to register the n×m array of client devices, establish digital rights for the registered n×m array of client device, receive the stream of encoded audio/video data, and provide the stream of encoded audio/video data to the registered n×m array of client devices based on the established digital rights.

Aspects of the present disclosure are drawn to a digital rights management (DRM) server device for use with a stream of encoded audio/video data and an n×m array of client devices, n being a first positive integer, m being a second positive integer. Each client device being configured to display a respective display content, at least one of the n×m array of client devices being configured to play audio content. The DRM server device includes a memory and a processor configured to execute instructions stored on the memory. This causes the DRM server device to register the n×m array of client devices, establish digital rights for the registered n×m array of client device, receive the stream of encoded audio/video data, and provide the stream of encoded audio/video data to the registered n×m array of client devices based on the established digital rights.

Embedding of digital tokens within a digital video can occur cryptographically using a public key in some embodiments. The digital video may be altered in a variety of ways so that the video itself contains an integrated token that can represent various quantities. Audiovisual data can be altered to contain both a token and a perceptible user auditory or visual cue as to the presence of the encrypted digital token. A video with an embedded digital token may be sent to users on the Internet. A video recipient may be able to view the video and also take additional action or gain additional functionality from the digital token embedded in the video. Tokens can be embedded by altering video metadata so that the perceptible video content itself is not changed in some embodiments.

Embedding of digital tokens within a digital video can occur cryptographically using a public key in some embodiments. The digital video may be altered in a variety of ways so that the video itself contains an integrated token that can represent various quantities. Audiovisual data can be altered to contain both a token and a perceptible user auditory or visual cue as to the presence of the encrypted digital token. A video with an embedded digital token may be sent to users on the Internet. A video recipient may be able to view the video and also take additional action or gain additional functionality from the digital token embedded in the video. Tokens can be embedded by altering video metadata so that the perceptible video content itself is not changed in some embodiments.

The present invention relates in particular to a pairing method between a multimedia unit and one operator having an operator identifier, the multimedia unit having a multimedia unit identifier and receiving conditional access data from said operator, the method being characterized in that: receiving by the multimedia unit a multimedia unit key formed by applying a first cryptographically function to a personalization key and to the multimedia unit identifier; receiving by the operator an operator key formed by applying a second cryptographically function to said personalization key and to the operator identifier; said multimedia unit further having a function of the multimedia unit and said operator further having a function of the operator, these functions being such that the result of the application of the function of the operator to said operator key and to said multimedia unit identifier is equal to the result of the application of the function of the multimedia unit to said multimedia unit key and to said operator identifier, this result forming a pairing key between said multimedia unit and said operator.

The present invention relates in particular to a pairing method between a multimedia unit and one operator having an operator identifier, the multimedia unit having a multimedia unit identifier and receiving conditional access data from said operator, the method being characterized in that: receiving by the multimedia unit a multimedia unit key formed by applying a first cryptographically function to a personalization key and to the multimedia unit identifier; receiving by the operator an operator key formed by applying a second cryptographically function to said personalization key and to the operator identifier; said multimedia unit further having a function of the multimedia unit and said operator further having a function of the operator, these functions being such that the result of the application of the function of the operator to said operator key and to said multimedia unit identifier is equal to the result of the application of the function of the multimedia unit to said multimedia unit key and to said operator identifier, this result forming a pairing key between said multimedia unit and said operator.