Reduced Data Set Digest for Secure User List Verification
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Solution Overview
Problem
Existing methods for determining if a user is on a posted list, such as a list of mortgages sold between banks, face challenges in security and efficiency, particularly in terms of storage space and network bandwidth usage.
Innovation Solution
A method involving the generation of a reduced data set digest using public and private keys, where each user is associated with a unique public key and private key, allowing users to determine if they are in a designated set without compromising anonymity or increasing storage and network resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complete list of users is posted to notify users on a designated set, then users can determine if they are on the list, but storage space and network bandwidth requirements increase significantly
Solution Approach 1:
The patent segments the complete user list into individual reduced data sets, where each user receives only their specific data set indicating whether they are on the designated list. This segmentation eliminates the need to transmit and store the entire user list, reducing storage space and network bandwidth requirements while maintaining accurate notification for each user.
Solution Approach 2:
The patent extracts only the necessary information for each user from the complete list. Instead of providing the full list to all users, each user receives an extracted reduced data set containing only their identification and status, eliminating redundant data transmission and storage while preserving notification accuracy.
2Ease of operation
If traditional list posting methods are used, then all users can access the list, but user anonymity is compromised
Solution Approach 1:
The patent applies local quality by providing different data sets to different users based on their specific needs and identities. Each user receives a customized reduced data set that contains only their own information, allowing them to verify their status while maintaining anonymity regarding other users. This localized information distribution preserves anonymity while ensuring each user can access their own list status.
3Reliability
If secure authentication mechanisms are implemented, then data security is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by requiring users to authenticate and receive their reduced data sets before accessing the list information. The system pre-generates and securely distributes individualized reduced data sets to authenticated users, ensuring data security is established beforehand. This preliminary secure distribution simplifies the overall system by eliminating the need for complex real-time authentication mechanisms during list access.
Data Source
AI summary
A method may include obtaining public keys for each user of a set of users, where each user is associated with a unique public key and a unique private key. The method may also include obtaining a designated set of users, where the designated set of users is a subset of the set of users. The method may additionally include generating, using the public keys, a digest associated with the designated set of users. The digest includes reduced data sets in a secure form, where each user of the set of users is associated with one of the reduced data sets that is indicative of whether the user is in the designated set of users, and the reduced data set is accessible using the private key of the user. The method may also include posting the digest to a location accessible from an electronic device of the user.