Dynamic Digital Watermarking With Access-Context Encryption Keys
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Solution Overview
Problem
Existing digital security systems lack specific traceability and context-awareness, failing to adapt to dynamic data access and sharing environments, and do not fully leverage user interaction data for enhanced security measures.
Innovation Solution
A system that dynamically generates encryption keys and watermarks based on user identity, access time, and mode of access, embedding unique watermarks into digital files, and stores access parameters for forensic analysis in case of unauthorized access or leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static watermarks are used to indicate intended recipient or owner, then basic identification is provided, but specific traceability about when or how a file was accessed or leaked cannot be provided
Solution Approach 1:
The patent applies dynamics by transitioning from static watermarks to dynamic watermarks that change based on access context. Each watermark is generated dynamically using a key derived from user identity, access time, and access mode, allowing the system to provide precise traceability about when and how files were accessed while maintaining manageable complexity through automated key derivation
Solution Approach 2:
The patent changes parameters by incorporating multiple variable parameters (user identity, access time, access mode) into the watermark generation process. These parameters are combined to create a unique access key for each access event, enabling precise measurement of access characteristics without requiring overly complex manual configuration
2Adaptability or versatility
If rigid security methods are used, then basic security is maintained, but adaptability to dynamic data access and sharing contexts is reduced
Solution Approach 1:
The system dynamically generates encryption keys and watermarks based on real-time access context including user identity, access time, and access mode. This dynamic approach allows security measures to adapt to different access scenarios while maintaining reliability through consistent cryptographic operations and structured key derivation
Solution Approach 2:
The system incorporates feedback by using access context information (user identity, time, mode) to generate the encryption key and watermark. This feedback mechanism ensures that security measures are tailored to the specific access scenario, improving adaptability while maintaining reliability through verified access conditions
3Loss of information
If existing security systems track user behavior separately from watermarking, then some monitoring is achieved, but integration into dynamic watermarking mechanisms is missing
Solution Approach 1:
The patent merges user behavior tracking with watermarking by incorporating access context information (user identity, access time, access mode) directly into the watermark generation process. This combining approach prevents loss of access information while managing integration complexity through a unified key derivation mechanism that ties together monitoring and watermarking functions
Data Source
AI summary
A method is provided for dynamically generating a digital watermark for a data file. The method includes receiving a request to access the data file from a user; dynamically generating an encryption key based on at least one parameter selected from the group consisting of the identity of the user, the time of access, and the mode of access; embedding a digital watermark into the data file using the dynamically generated encryption key, wherein the digital watermark is unique to the request; providing access to the data file with the embedded digital watermark to the user; and storing information related to the encryption key and the parameters used for its generation in a secure database.