Conditional Access Notification for Mobile Video Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for conditional access to video content on mobile terminals are vulnerable to unauthorized access and user errors, such as forgotten arrangements or technical issues, leading to potential unauthorized decryption of encrypted content.
Innovation Solution
A method that optimizes conditional access by using a management center to send a notification message with access authorization shortly before the content broadcast, allowing the mobile terminal to validate and extract the authorization, reducing the time for potential unauthorized access and ensuring secure, user-friendly content access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the right message is transmitted several days in advance, then the user has sufficient time to receive the access authorization, but the security of the transmitted message is compromised as third parties can break the encryption to extract the right or keys
Solution Approach 1:
The system performs preliminary actions by sending a notification message in advance that contains information allowing the mobile terminal to locate and retrieve the right message, rather than sending the complete right message days in advance. This preliminary notification is sent closer to the broadcast time, balancing user preparation time with security.
Solution Approach 2:
The invention extracts only the essential information needed for access (notification containing location indicator of right message) from the complete right message and transmits it separately. The actual right message remains encrypted and is retrieved by the mobile terminal at the appropriate time, separating the notification function from the authorization data.
2Ease of operation
If the user selects content in advance using point-to-point method, then the user can choose specific contents of interest, but the user may forget to make necessary arrangements or encounter technical issues preventing content reception
Solution Approach 1:
The management center sends a notification message as feedback to the user's mobile terminal, confirming that the selected content will be broadcast and providing timing information. This feedback mechanism reminds users of upcoming content and ensures they have the necessary access authorizations, reducing forgotten arrangements.
Solution Approach 2:
The system performs preliminary actions by sending the notification message in advance of the actual content broadcast, allowing users to prepare their mobile terminals and ensure proper settings are configured before the content is transmitted, while still maintaining security by not sending complete authorization data too early.
3Ease of operation
If the management center sends complete right messages in advance, then user access is simplified, but the management center's workload increases during peak events
Solution Approach 1:
The invention extracts and transmits only the notification information (containing location indicator of right message) rather than the complete right message data. The actual right message is retrieved by the mobile terminal from the broadcast stream at the appropriate time, significantly reducing the data transmission burden on the management center while maintaining full access functionality.
Data Source
AI summary
A method that allows the optimization of the consumption of conditional access content in order to guarantee less vulnerable right messages involves three steps: the selection by the user of a content and the indication of this interest to said management center; the sending of a notification message containing or indicating the access authorisation message shortly before the broadcast of said content and storage of this authorisation message; and the sending of the content itself and the use of the data of the authorisation message in order to access the data of the content. There may be a fourth stage, namely the validation of the authorisation message by the user. This validation is executed in general at the time of the reception of the content or alternatively the user confirms their intention to purchase.