Device for implementing a block-ciphering process
US6760439B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2000 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/125
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a device for implementing a block-ciphering process using an encryption/decryption arithmetic-logic module (3) which is supplied with the data stream of word length j≦n to be ciphered. The invention is characterized in that the arithmetic-logic module (3) includes a plurality of encryption/decryption elements (5), each of which forms a stage of a computing pipeline, the stages being designed such that they operate independently of each other in different modes of operation and with different keys. Supported by further components and data paths surrounding the encryption/decryption arithmetic-logic module (3), the invention allows up to p data streams, each with independently selectable word lengths j≦n and modes of operation, to be encrypted or decrypted simultaneously. In addition, the architecture of the device permits different logical data streams to be processed directly consecutively and free of conflict on the physical channels provided by the hardware resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.