Key prefix driven data encryption in tree structures
US11940995B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2023 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Jul 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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 a transaction using the derived encryption key. The subject technology determines a non-leaf node using a tenant prefix of a tenant. The subject technology inserts the encrypted record value at a leaf node below a non-leaf node of a tree structure associated with the tenant. The subject technology receives a second transaction for performing a read operation on a distributed database. The subject technology retrieves a set of encryption keys based at least in part on an account and the tenant. The subject technology decrypts, using the set of encryption keys, data from the distributed database. The subject technology provides the decrypted data as a result of the second transaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.