Method, system and apparatus for data encryption
US11809578B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2022 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Dec 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is detected whether a next-to-last raw data block in a raw data segment has been written into an input buffer. If so, the next-to-last raw data block is read from the input buffer for encryption immediately after a current raw data block is read from the input buffer for encryption. Reading continues for a subsequent raw data block after the current raw data block is read from the input buffer for encryption, after the next-to-last raw data block is read from the input buffer for encryption. Encryption is performed, using Advanced Encryption Standard (AES) processing and a CipherText Stealing (XTS) working mode, on a last raw data block in the raw data segment by providing an intermediate encrypted data block, where the intermediate encrypted data block is obtained by encrypting the next-to-last raw data block, and the last raw data block is read from the input buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.