Steganography-Based Document Access Control
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Solution Overview
Problem
Enterprise organizations face challenges in ensuring that sensitive documents are only accessed by authorized users, particularly during transmission between users.
Innovation Solution
The implementation of steganography-based security policies within documents, which embed authorization criteria and response actions, ensuring secure access control by verifying user authorization upon document access requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional access control methods are used for document transmission, then implementation is simple, but security against unauthorized access is insufficient
Solution Approach 1:
The document is divided into multiple fragments and distributed to different users. Each fragment alone is insufficient to reconstruct the original document, providing security through segmentation. This resolves the contradiction by enhancing security without requiring complex centralized control mechanisms.
Solution Approach 2:
Security policies are embedded within the document structure itself, creating a nested configuration where the document contains its own access control rules. This eliminates the need for external complex control systems while maintaining strong security through self-contained embedded policies.
2Reliability
If steganography-based security policies are embedded in documents, then unauthorized access is prevented, but document processing complexity increases
Solution Approach 1:
The document system performs its own security verification by executing embedded policies locally without requiring external authentication servers or complex verification infrastructure. The document self-validates access rights through integrated security rules, reducing external system complexity while maintaining strong authorization control.
3Reliability
If security policies are transmitted with documents, then access control is maintained across networks, but transmission data volume increases
Solution Approach 1:
Security policies are extracted and embedded directly into the document structure rather than being transmitted as separate accompanying files. This integration eliminates redundant data transmission while maintaining access control consistency across different networks and locations.
Data Source
AI summary
Arrangements for steganography-based security document access control are provided. In some examples, a security policy for a document may be generated. The security policy may include identification of one or more users authorized to access the document and one or more response actions to execute upon violation of the security policy. The generated security policy may be embedded in the document using steganography. Accordingly, transmission of the document may include transmission of the security policy with the document. The document may be transmitted to a destination node. A user at the destination node may request access to the document. In response to the request, the security policy embedded in the document may be executed to confirm whether the user is an authorized user. If the user is authorized, access to the document may be enabled. If the user is not authorized, the one or more response actions may be executed.