Module Connector Script for Secure Cross-Origin Communication
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Solution Overview
Problem
In web environments, third-party modules pose security risks due to potential interactions across different domains, compromising user privacy and data integrity, as browsers enforce the same origin policy to prevent cross-site security issues.
Innovation Solution
A module connector script or object is loaded into a base document to discover and facilitate secure interactions between listener and sender modules from different origins by passing information between them, using a messaging API to manage message queues and validate module identities, ensuring secure inter-module communication while adhering to the domain security model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If third-party modules are allowed to execute in iframes from different domains, then module functionality and user customization are enhanced, but security risks and data privacy breaches increase
Solution Approach 1:
A module connector script acts as an intermediary between modules from different domains. The connector script receives messages from sender modules, validates them against security policies, and forwards them to listener modules. This mediator approach enables cross-domain communication while maintaining security control, as the connector script enforces domain security policies and validates module identities before allowing interactions.
2Reliability
If the same origin policy is enforced to prevent cross-site security issues, then data integrity and user privacy are protected, but inter-module communication between different domains is blocked
Solution Approach 1:
The module connector script serves as a mediator that bypasses the same origin policy restrictions while maintaining security. It intercepts communication attempts between modules from different domains, validates their identities and messages, and facilitates authorized communication. This allows reliable inter-module communication while preserving data integrity through security validation.
Solution Approach 2:
The communication system is segmented into distinct components: sender modules, listener modules, and the module connector script. Each component has specific responsibilities - senders compose messages, the connector validates and routes them, and listeners process received messages. This segmentation allows controlled cross-domain communication while maintaining security boundaries.
3Productivity
If modules from different domains are allowed to interact directly, then communication efficiency is improved, but unauthorized access and privacy breaches occur
Solution Approach 1:
The module connector script acts as a security gateway that maintains communication efficiency while preventing unauthorized access. It validates module identities, message formats, and security policies in a centralized manner, allowing legitimate communications to proceed efficiently while blocking malicious attempts. This centralized validation approach maintains productivity while ensuring security.
Data Source
AI summary
Methods, apparatuses, and systems directed to facilitating secure, structured interactions between code modules executing within the context of a document processed by a user agent, such as a browser client, that implements a domain security model. In a particular implementation, a module connector script or object loaded into a base document discovers listener modules and sender modules corresponding to different origins or domains, and passes information between them. In this manner, a listener module may consume and use information from a sender module located on the same page simply by having an end-user add both modules to a web page without having to explicitly define any form of interconnection. For example, a photo module may access a user account at a remote photo sharing site, and provide one or more photos to a module that renders the photographs in a slide show.