On-board Server Content Distribution via Key Pair Encryption
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Solution Overview
Problem
Current information distribution systems in means of transportation, such as aircraft, require significant logistical effort and infrastructure to provide up-to-date information contents to passengers, and existing methods are costly and inefficient, especially for providing personal copies of content that may not be used during travel.
Innovation Solution
A method using a key pair system where an on-board server assigns encrypted information contents to user-specific output units, allowing secure decryption during use, reducing the need for extensive infrastructure and logistics, and enabling secure, up-to-date content access without high costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If information contents are loaded onto output units in advance, then passengers can access content during travel, but high logistical effort and infrastructure costs are required
Solution Approach 1:
The system performs preliminary actions by distributing encrypted content to output units before travel, but eliminates the need for complex logistics by using on-demand encryption key release. The content is prepared in advance in encrypted form, and decryption keys are provided only when needed during travel, reducing infrastructure requirements while maintaining content availability.
Solution Approach 2:
The invention extracts the decryption key from the content distribution system, separating content delivery from content access control. Content is distributed independently in encrypted form, and the decryption mechanism is extracted as a separate function that activates only during authorized use periods, simplifying the overall system infrastructure.
2Ease of operation
If personal copies of content are provided to passengers, then content can be accessed offline, but high costs are incurred for content that may not be used
Solution Approach 1:
The system creates encrypted copies of content on passenger output units, but these copies remain inaccessible without the decryption key. Multiple encrypted copies can be distributed at minimal cost, and only authorized copies that receive the decryption key during travel become accessible, reducing waste from unused content distribution.
Solution Approach 2:
The system changes the accessibility parameter of content copies through time-based key release. Encrypted content copies exist in an inaccessible state until the decryption key is released during authorized travel periods, at which point the content becomes accessible without requiring permanent licensed copies to be distributed.
3Loss of information
If streaming servers are used for content transmission, then up-to-date content can be provided, but expensive and powerful infrastructure is required on board
Solution Approach 1:
The system performs preliminary content distribution by sending encrypted content to passenger output units before travel. This eliminates the need for on-board streaming servers, as content is already available in encrypted form on passenger devices. The preliminary action includes providing decryption keys only during authorized travel periods, ensuring content currency without expensive infrastructure.
4Loss of information
If comprehensive amounts of data are transferred for content updates, then content can be kept current, but high bandwidth requirements result
Solution Approach 1:
The invention extracts only the essential decryption key for transmission during travel, rather than transferring comprehensive content data. The content itself is distributed once in encrypted form, and only the small decryption key is transmitted on-demand during authorized use periods, dramatically reducing data transmission volume while maintaining content update capability.
Data Source
AI summary
A method and system is provided, including an on-board server, by which, a link to the output unit is set up, and is assigned to a specific conveying means via a first key pair. A first secret key from the first key pair is stored on the on-board server. Before the use of the conveying means, an application is installed on the output unit and a second key pair is requested, a second secret key being transmitted to the application. Then, available information contents are displayed on the output unit, and a unique code is generated for each selected content. The selected contents are requested by the application and the unique code is assigned a third key pair. A third secret key is encrypted with the public keys and assigned to the on-board server. The selected contents, encrypted with a third public key, are then transmitted to the output unit.