Distributed Secret Management with Sharded Encryption Keys

The patent divides key storage across multiple distributed nodes rather than a single central repository. Each node can independently serve key requests, enabling linear scaling as nodes are added. The system maintains fast key retrieval through parallel key reconstruction from multiple nodes, where the key material is reassembled from distributed shards using threshold cryptography, achieving both scalability and speed.

The patent implements local key caching at edge nodes and clients to maintain fast key retrieval speeds. Frequently accessed keys are cached locally rather than always fetching from the distributed key management service. This local quality approach ensures rapid key access while the distributed architecture provides scalable backend storage and management capabilities.

The patent implements preliminary action by establishing key versioning and binding encrypted data to specific key versions before rotation occurs. When key rotation is initiated, the system pre-generates new key material and maintains multiple valid key versions simultaneously. Encrypted data is tagged with its associated key version identifier, enabling seamless retrieval and decryption using the appropriate key version regardless of subsequent rotations, thus preventing data inaccessibility.

The patent creates and maintains copies of key material in multiple versions and locations. When key rotation occurs, old key versions are preserved as copies alongside new keys. The system maintains a history of key versions and their associations with encrypted data, allowing retrieval of appropriate key copies for decryption even after multiple rotations. This copying strategy ensures forward security while maintaining continuous data accessibility.