Distributed storage network and method for encrypting and decrypting data using hash functions
US9009491B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Feb 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A DS processing unit includes a grid module and a DSN interface. The grid module is operable to encrypt a data segment and to decrypt an encrypted data segment. To encrypt the data segment, the grid module partitions the data segment into portions and encrypts the portions using encryption keys generated from other portions to produce encrypted portions. The grid module then dispersed storage error encodes the encrypted portions to produce a set of encoded data slices, which the DSN interface outputs to a DSN. The DSN interface also receives a set of encoded data slices, which the grid module disperse storage error decodes to produce the encrypted data segment. The grid module then partitions the encrypted data segment into encrypted data portions and decrypts the encrypted data portions using decryption keys generated from other encrypted data portions to produce decrypted portions of a recovered data segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.