Encryption Key Management in Group Communication Systems
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Solution Overview
Problem
Existing group-based communication systems face challenges in efficiently managing encryption keys for secure data access and control, leading to computational complexity and resource exhaustion as the amount and complexity of data grow.
Innovation Solution
A centralized key material source is used to manage encryption keys, enabling a third-party data owner to retain control through keyscope components like timestamps for automatic key rotation, granular access control, and detailed logging, ensuring secure and efficient access to group-based communication data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption keys are managed locally in each client device, then access control is simple and fast, but security control and key rotation become difficult as data grows
Solution Approach 1:
A key material source acts as an intermediary between data owners and client devices. The key material source generates, stores, and manages encryption keys centrally, while client devices only hold references to these keys. This mediator approach enables centralized security control and automated key rotation without requiring complex key management infrastructure in each client device.
2Reliability
If encryption keys are stored centrally, then security control and key rotation are improved, but access speed and computational efficiency decrease
Solution Approach 1:
Encryption keys are generated and pre-stored in the key material source before any data access occurs. When data needs to be encrypted or decrypted, the system performs a preliminary lookup of the required key in the key material source using identifiers from the data structure. This preliminary preparation of key availability enables fast access without compromising centralized control.
3Measurement precision
If keyscope components are added for granular control, then access management precision is improved, but computational complexity increases
Solution Approach 1:
Access control is segmented into keyscope components (organization identifier, workspace identifier, channel identifier, user identifier, timestamp) that are embedded directly in the data structure. Each component represents a discrete dimension of access control. This segmentation allows the system to precisely control access by checking individual components without requiring complex computational logic, as the control rules are structured and hierarchical.
Data Source
AI summary
Various embodiments are directed to systems and methods for encryption key management within a group-based communication platform.