Decoupling Digital Content Rights from Download via Transcrypting
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Solution Overview
Problem
Current digital content protection technologies require users to download a digital content unit from a digital content store to obtain rights, which is time-consuming and costly, and do not effectively decouple the purchasing of rights from the downloading process.
Innovation Solution
Systems and methods that allow users to obtain rights in a digital content unit without downloading the unit, by transcrypting or converting an encrypted digital content unit into a decryptable copy using cryptographic techniques, decoupling the purchasing of rights from the downloading process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users download digital content units from digital content stores to obtain rights, then users can access authorized content, but the process is time-consuming and costly
Solution Approach 1:
The patent segments the digital content unit into two independent parts: the content data itself and the authorization rights. Users can obtain rights separately from the content by providing a copy identifier and receiving a decryption key, without needing to download the entire content unit. This separation allows independent acquisition of authorization rights.
Solution Approach 2:
The patent extracts the authorization mechanism from the content download process. By extracting only the essential authorization elements (copy identifier and decryption key) from the full content unit, the system enables users to obtain rights without transferring the actual content data, significantly reducing time and bandwidth requirements.
2Reliability
If users download digital content units to obtain rights, then content protection is maintained, but operational costs for digital content stores increase
Solution Approach 1:
The system extracts only the authorization credentials (decryption key) from the content delivery process, leaving the content itself to be obtained through separate legitimate means. This dramatically reduces the bandwidth and storage requirements for the digital content store, lowering operational costs while maintaining protection through cryptographic controls.
Solution Approach 2:
The patent introduces an intermediary authorization server that mediates between the content and the user. This server verifies authorization requests and provides decryption keys without the digital content store needing to directly transfer content data, reducing their operational burden and costs.
3Object-affected harmful factors
If cryptographic techniques are used to protect digital content, then piracy is reduced, but the complexity of the system increases
Solution Approach 1:
The patent extracts the cryptographic protection mechanism from the content itself and applies it only to the authorization layer. By protecting only the decryption keys and authorization data rather than the entire content unit, the system reduces cryptographic complexity while maintaining piracy prevention.
Solution Approach 2:
The system allows users to possess copies of content through legitimate means (purchase, gift, etc.) while using cryptography to control access to the decryption keys. This approach simplifies the system by not requiring cryptographic protection of the content itself, only of the authorization mechanism.
4Reliability
If users must download content to obtain rights, then content distribution is controlled, but user convenience is reduced
Solution Approach 1:
The patent segments the content acquisition process into independent steps: obtaining content through legitimate means, then separately obtaining authorization rights. This segmentation allows users to convenienceedly acquire rights without the burden of downloading large content files from the official store, while distribution control is maintained through cryptographic verification.
Data Source
AI summary
Systems and methods for enabling a user to obtain rights in a legitimate copy of a digital content unit without downloading the copy from a digital content store are provided. The systems and methods provide an encrypted copy of a digital content unit to a first user and transcript the encrypted copy to generate the legitimate copy to a second user. The encrypted copy is encrypted with a first encrypt key that may be associated with the first user and the legitimate copy is encrypted with a second encrypt key that may be associated with the second user.