Attribute-Based Encryption for Community Security Information
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Solution Overview
Problem
Existing security information sharing platforms face challenges in efficiently managing community-based security information encryption, particularly in authorizing users to access encrypted data without explicitly enumerating each individual member, which limits the scalability and effectiveness of information sharing within communities.
Innovation Solution
The system generates communities based on sets of attributes characterizing members, using a decryption key corresponding to each user attribute to authorize access to encrypted community-based security information, enabling secure and scalable information sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explicit enumeration of each individual community member is used for authorization, then access control security is maintained, but system scalability and ease of operation deteriorate
Solution Approach 1:
The patent segments the community authorization problem into two independent components: (1) community definition based on attributes, and (2) individual user authorization based on matching attributes. This segmentation allows the system to scale by adding users without requiring changes to the community definition or re-encryption of data, while maintaining security through attribute-based access control.
Solution Approach 2:
The patent introduces an intermediary mechanism - attribute-based encryption schemes - that mediates between community definitions and individual users. Instead of directly managing user lists, the system uses cryptographic attributes as an intermediary layer that automatically verifies user eligibility, eliminating the need for explicit user enumeration while maintaining access control security.
2Ease of operation
If attribute-based encryption is implemented for community access, then scalability and ease of operation improve, but device complexity increases
Solution Approach 1:
The patent implements a universal attribute-based encryption framework that can handle multiple community types and access scenarios through a single cryptographic primitive. The same encryption scheme serves multiple functions: defining communities, authorizing users, encrypting data, and managing access rights, thereby reducing overall system complexity despite the advanced cryptographic mechanisms involved.
3Reliability
If security information is encrypted for community access, then information security is improved, but information sharing efficiency deteriorates
Solution Approach 1:
The patent performs preliminary encryption of community data using community-specific keys before distribution to users. This preliminary action ensures that data is already secured when users access it, eliminating the need for real-time encryption/decryption operations during information sharing, thereby maintaining both security and efficiency.
Solution Approach 2:
The system enables users to self-verify their access rights through attribute matching without requiring manual authorization from community administrators. Users with matching attributes can automatically access encrypted community information, eliminating administrative overhead and improving information sharing efficiency while maintaining security through cryptographic protection.
Data Source
AI summary
Examples disclosed herein relate to encryption of community-based security information. Some examples may enable authorizing a user of a community to access an encrypted data item (e.g., at least an encrypted portion of community-based security information of that community) using a decryption key. The community may be generated on a security information sharing platform based on a set of community attributes. The decryption key may comprise a private key corresponding to each user attribute of a set of user attributes that are associated with the authorized user where the set of user attributes satisfy the set of community attributes.