Video Playback Approval System for Sensitive Data Protection
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Solution Overview
Problem
Existing video playback systems fail to ensure confidentiality and prevent unauthorized playback or export of sensitive personal information recorded in environments like operating rooms, where leakage could cause significant damage.
Innovation Solution
A video playback system that generates a decryption key only upon approval by a designated playback approver, using methods like one-time passwords or biometrics, to encrypt and decrypt recorded videos, and restricts video export until approved by the same approver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If encryption is applied to recorded video data, then confidentiality is improved, but accessibility and ease of playback are worsened
Solution Approach 1:
The system performs preliminary actions by pre-designating playback approvers and pre-establishing approval methods before video playback is needed. The approval authority notifies the playback approver in advance, and the decryption key is prepared to be issued only after approval is obtained. This preliminary setup ensures that when playback is needed, the system can quickly verify authorization and provide the decryption key without requiring complex real-time authentication, thus maintaining ease of operation while ensuring confidentiality.
2Reliability
If playback approval control is implemented, then unauthorized playback is prevented, but system complexity is worsened
Solution Approach 1:
The system introduces an intermediary mechanism in the form of a playback approval control system that mediates between the video storage system and the playback function. The approval authority acts as an intermediary that receives playback requests, verifies authorization status, and issues decryption keys only to authorized users. This intermediary layer simplifies the overall system architecture by centralizing the authorization logic, making it easier to manage and maintain while effectively preventing unauthorized playback.
Solution Approach 2:
The system extracts the authorization verification function from the playback process itself and separates it into a distinct approval control mechanism. By taking out the authorization check from the playback flow, the system can implement robust security controls without complicating the actual playback operation. The decryption key is extracted as a separate credential that is only released after approval, allowing the playback process to remain simple while maintaining strong security.
3Speed
If decryption key is issued without approval, then playback speed is improved, but data security is worsened
Solution Approach 1:
The system performs the security check in advance by requiring approval before issuing the decryption key. The playback approver is notified beforehand, and authorization is verified prior to key release. This preliminary action ensures that only authorized users receive the decryption key, maintaining data security. Once approval is obtained, the key can be issued quickly to the authorized user, minimizing any impact on playback speed while ensuring security is not compromised.
Data Source
AI summary
Provided is a video playback system based on approval of a playback approver. A decryption key that can decrypt an encrypted and stored recorded video is generated only when video playback is approved by a playback approver using an appointed playback approval method and transmitted to the video recording device so that it is possible to prevent leakage of the recorded video with sensitive personal information.