Stream Receiver Access Control via White and Black Lists
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Solution Overview
Problem
In office environments, content casting applications pose a security risk by allowing unauthorized access to sensitive information across different departments, making it difficult to control access to stream receivers in shared conference rooms.
Innovation Solution
Implementing white and black lists on stream receivers to manage access rights, allowing only authorized content casting applications to access the receivers, with options for absolute or timed access restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If content casting applications are allowed to access any stream receiver on the network, then ease of operation is improved, but security and data privacy are compromised
Solution Approach 1:
The patent segments access control by implementing department-specific white lists and black lists on stream receivers. Each receiver maintains separate access control lists that segment the network into authorized and unauthorized departments, allowing content casting within permitted segments while blocking unauthorized access from other segments.
Solution Approach 2:
The patent introduces an intermediary access control mechanism between the content casting application and the stream receiver. The white list and black list act as intermediaries that mediate access requests, checking department identifiers against the lists before allowing or blocking the casting connection, thus preventing direct unauthorized access.
2Adaptability or versatility
If stream receivers in conference rooms are made accessible to multiple departments, then adaptability is improved, but data privacy and security are worsened
Solution Approach 1:
The patent implements dynamic access control where the stream receiver's authorized access list can be modified based on scheduling information. The receiver can dynamically adjust its white list and black list according to scheduled events, allowing different departments access at different times while maintaining data privacy when unauthorized departments attempt to connect.
Solution Approach 2:
The patent applies preliminary action by pre-configuring white lists and black lists on stream receivers before access attempts occur. Department identifiers and access permissions are predetermined and stored on the receivers, allowing rapid automated verification of casting requests without real-time manual intervention.
3Reliability
If access control lists are implemented on stream receivers, then security is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling stream receivers to autonomously verify casting requests against their stored white lists and black lists. The receivers independently check department identifiers in incoming cast requests against their access control lists without requiring external authentication servers or manual verification, simplifying the overall system architecture.
4Loss of information
If department-specific access restrictions are enforced, then data privacy is improved, but ease of operation is worsened
Solution Approach 1:
The content casting application performs self-service by automatically including its department identifier in casting requests and autonomously receiving acceptance or rejection responses from the stream receiver based on the receiver's access control lists, eliminating the need for manual permission requests or user intervention.
Data Source
AI summary
A stream receiver device that receives information indicative of streams to be played from remote devices. The stream receiver has a network connection, receiving information indicative of streams to be played from remote devices, e.g., stream senders. A processor in the stream receiver operates to receive the information and operates to play a stream based on the information. The stream receiver has an access list, which can be a white list or a black list. The stream is played when allowed by the white list or not-blocked by the black list. The lists can also include times during which the entries are active, and file types to be allowed or blocked.