Aspects of the subject disclosure may include, for example, a local server coupled to a plurality of client devices. The local server may receive encrypted content from one or more content sources and provide the content to the client devices. The local server and client devices may be part of a multi-client environment such as a hotel or conference center. The local server does not decrypt and re-encrypt content, thereby allowing the use of low cost equipment. Other embodiments are disclosed.

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.

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.

Provided is a system and computer-implemented method for encoding account tokens in image files. The method includes receiving, from a user associated with an account identifier, an identification of at least one image, generating at least one token based on the account identifier of the user, encoding the at least one token in the at least one image, resulting in at least one tokenized image, and communicating the at least one tokenized image to a transaction processing system, wherein the transaction processing system is configured to conduct a transaction based on the tokenized image.

Techniques for rapid video on demand (VOD) media content breach response are described. In some embodiments, during content preparation, a server generates an encrypted media content item by generating a first encrypted portion using a first key derived from a first seed that is of a first type and generating a second encrypted portion using a second key derived from a second seed that is of a second type. In some embodiments, the server classifies the first portion in a first category (e.g., a prioritized category) and the second portion in a second category (e.g., a non-prioritized category). During a breach response, the server repairs the encrypted media content item by re-encrypting portions in the first category, e.g., re-encrypting the first encrypted portion using a replacement key derived from a replacement seed that is of the first type, and updating encryption metadata.

Techniques for packaging media content in a low latency encryption ready format for streaming are described herein. In accordance with various embodiments, one or more packagers that include create an intermediate unit including at least one data portion from media content. The packager(s) further determine a size for reformatting the intermediate unit, where the size can include a padding amount for the at least one data portion. The packager(s) also package the intermediate unit to a reformatted partial segment according to the size without encrypting the at least one data portion, including injecting into the partial segment at least one encryption specific box and injecting padding into the at least one data portion according to the padding amount. The packager(s) then package the reformatted partial segment for streaming while maintaining the size, including generating a manifest for streaming the media content specifying the size of the reformatted partial segment.

A mechanism by which a secure, privacy preserving query system may be constructed from blockchain technology is disclosed. This system operates on the local differential privacy model through random responses using a private weighted coin protocol. The system specified allows for the ejection of malicious and/or non-interactive participants, minimizes blockchain storage size, and provides a mechanism for forward secrecy. The system specification uses a distributed random beacon to provide a public source of randomness. This randomness is utilized to perform random subset selection from a publicly known list of participating entities. The system uses a homomorphic self-tallying voting protocol under homomorphic encryption to further ensure participant privacy.

A system and methods are disclosed that enable advertisers, publishers, and consumers to interact to provide well-targeted advertisement impressions, while preserving consumer privacy. Particularly, the system and methods enable accurate and reliable targeting of advertisements without the need for privacy-invasive tracking and collection of consumer information by advertisers or publishers. Instead, the consumer retains complete control of his or her own private information, even while that private information is used for programmatic targeting of advertisements. The system and methods disclosed herein advantageously utilize blockchain as a tool for arbitrating data, which accounts for and helps to eliminate fraud, costly arbitrage, and brand safety concerns by providing the programmatic advertising ecosystem with trust, permanence, transparency, and auditability.

Techniques for packaging media content in a low latency encryption ready format for streaming are described herein. In accordance with various embodiments, one or more packagers that include create an intermediate unit including at least one data portion from media content. The packager(s) further determine a size for reformatting the intermediate unit, where the size can include a padding amount for the at least one data portion. The packager(s) also package the intermediate unit to a reformatted partial segment according to the size without encrypting the at least one data portion, including injecting into the partial segment at least one encryption specific box and injecting padding into the at least one data portion according to the padding amount. The packager(s) then package the reformatted partial segment for streaming while maintaining the size, including generating a manifest for streaming the media content specifying the size of the reformatted partial segment.

Techniques for rapid video on demand (VOD) media content breach response are described. In some embodiments, during content preparation, a server generates an encrypted media content item by generating a first encrypted portion using a first key derived from a first seed that is of a first type and generating a second encrypted portion using a second key derived from a second seed that is of a second type. In some embodiments, the server classifies the first portion in a first category (e.g., a prioritized category) and the second portion in a second category (e.g., a non-prioritized category). During a breach response, the server repairs the encrypted media content item by re-encrypting portions in the first category, e.g., re-encrypting the first encrypted portion using a replacement key derived from a replacement seed that is of the first type, and updating encryption metadata.