Dynamic Cross Origin Resource Control via Cryptographic Tokens
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Solution Overview
Problem
Current approaches to managing cross-origin requests are too restrictive and lack flexibility, while also being less secure, as they rely on less stringent security measures to allow greater flexibility.
Innovation Solution
A novel method involving a second entity that generates cryptographically processed tokens indicating valid origin domains for content requests, allowing users to access content while controlling which domains can originate requests, and dynamically changing valid origin domains by issuing new tokens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If same origin policy is applied to prevent cross-origin requests, then security is improved, but flexibility and accessibility are worsened
Solution Approach 1:
The patent introduces an origin identifier as an intermediary element that is inserted into cross-origin requests. This origin identifier acts as a mediator that allows the server to distinguish between legitimate cross-origin requests and malicious ones, thereby maintaining security while enabling flexible cross-origin access. The origin identifier bridges the gap between the client and server by carrying authentication information without requiring the client to directly trust the server or vice versa.
Solution Approach 2:
The patent changes the parameter of request authentication by moving from domain-based authentication (same origin policy) to token-based authentication (origin identifier). This parameter change allows the system to maintain security while enabling cross-origin requests, as the origin identifier can be dynamically generated and validated by the server without being constrained by traditional domain matching rules.
2Adaptability or versatility
If less stringent security measures are used to allow greater flexibility, then adaptability is improved, but security is worsened
Solution Approach 1:
The patent applies preliminary action by pre-generating origin identifiers that are embedded in cross-origin requests before the actual resource access occurs. These origin identifiers are created in advance with specific authentication credentials, allowing the server to quickly validate requests without performing complex security checks at the time of access. This preliminary preparation enables both flexibility in allowing cross-origin requests and security through pre-validated authentication.
3Ease of operation
If traditional cross-origin request management is used, then ease of operation is maintained, but security and control are worsened
Solution Approach 1:
The patent extracts the origin identifier from the traditional same-origin policy framework and handles it separately in the request validation process. By taking out the origin identifier authentication from the domain-based policy, the system can maintain the simplicity of cross-origin request handling while adding a layer of security control. The origin identifier is extracted and validated independently, allowing fine-grained control over which cross-origin requests are permitted without complicating the overall request management流程.
Data Source
AI summary
Example methods and system for providing content are disclosed. One or more cryptographic keys may be generated. At least a portion of the one or more cryptographic keys may be used to generate a token associated with a user interface service. The token may indicate a valid origin domain. The token may be provided to a user device, which may use the token to request content from a content service. The content service may authorize the request based on a comparison of the valid origin domain and an origin identifier associated with the request.