Address dependent data encryption
US9483664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Encryption of data within a memory 6 is provided by key generation circuitry 12 which serves to generate a key as a function of the address within the memory 6 being accessed and then encryption circuitry 14 or decryption circuitry 16 which serve respectively to encrypt or decrypt the data as a function of the key that has been generated based upon the address. The encryption and the decryption may be performed using a bitwise XOR operation. The key generation circuitry may have the form of physically unclonable function circuitry, which varies from instance to instance of implementation and that operates to generate the same key for the same address upon both write and read operations within the same instance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.