Key prefix driven data encryption in tree structures
US11762846B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Dec 22, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The subject technology receives a transaction for performing an operation on a distributed database, the transaction associated with an account. The subject technology identifies a tenant corresponding to the account associated with the transaction. The subject technology retrieves a set of encryption keys based at least in part on the account and the tenant. The subject technology determines a derived encryption key using a cryptographic hash function applied to a hybrid tenant master encryption key and a local random generated identifier. The subject technology encrypts a record value and a key value associated with transaction using the derived encryption key. The subject technology determines a tree structure associated with the tenant. The subject technology determines a non-leaf node using a tenant prefix of the tenant. The subject technology inserts the encrypted record value, and the encrypted key value at a leaf node below the non-leaf node of the tree structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.