Distributed Trust-Based Attribute Encryption for Secure Communications
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in providing secure communications in a distributed manner without a centralized server, especially in scenarios like disasters or military activities, where traditional centralized solutions are impractical and vulnerable to attacks, and existing encryption methods are inefficient for dynamic trust level management in pervasive social networking.
Innovation Solution
Implementing an attribute-based encryption (ABE) scheme that encrypts communication keys with public attribute keys associated with trust levels, allowing only eligible devices with sufficient trust levels to decrypt the data, and dynamically updating keys based on re-evaluated trust levels to ensure secure and flexible access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centralized server is used for key management, then security control is simplified, but the system becomes vulnerable to attacks and impractical in distributed scenarios
Solution Approach 1:
The patent extracts the centralized key management function from the system, allowing each user device to independently manage its own encryption keys and perform trust evaluations locally. This eliminates the single point of failure (centralized server) while maintaining security control through distributed key management and attribute-based encryption mechanisms.
2Ease of manufacture
If traditional encryption methods are used, then implementation is simple, but they are inefficient for dynamic trust level management
Solution Approach 1:
The patent implements dynamic trust level management by allowing trust attributes to be evaluated, updated, and revoked in real-time based on user behavior and system policies. The attribute-based encryption scheme enables flexible adaptation of access rights without requiring system reconfiguration, making the encryption approach adaptable to changing trust conditions while maintaining implementation feasibility through standardized cryptographic operations.
3Adaptability or versatility
If attribute-based encryption is implemented, then access control flexibility is improved, but computational overhead increases
Solution Approach 1:
The patent performs trust attribute evaluations and generates encryption keys in advance, before actual data transmission occurs. By pre-computing trust levels and establishing encryption relationships beforehand, the system reduces real-time computational overhead during data communication while maintaining the flexibility of attribute-based access control.
Data Source
AI summary
An approach is provided for providing secure communications based on trust evaluation in a distributed manner. A method can comprises: sending data to a plurality of devices, the data being encrypted with a communication key; encrypting the communication key with public attribute keys associated with attributes, wherein the attributes comprising at least one trust level related attribute representing an access condition for the data based on a trust level; evaluating a trust level of each device of the plurality of devices, to identify eligible devices of the plurality of devices whose trust levels satisfy the access condition; sending the encrypted communication key to the plurality of devices; and sending secret attribute keys associated with the attributes to each device of the eligible devices for decrypting the encrypted communication key, the secret attribute keys being personalized for the each device of the eligible devices.