QoS assisted AES engine for SSD controller
US10855444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jun 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A flow controller selects a direction (encryption/decryption) for an AES core according to quality of service parameters and a number of data words in encryption and decryption data buffers. A direction ratio may be calculated as a function of the quality of service parameters and the number of data words in the encryption and decryption data buffers. The flow controller selects the direction to reduce a cost function. The cost function may be at a minimum when a ratio of words in the encryption and decryption data buffers is the same as the direction ratio. A key management unit supplies keys according to the selected direction to the AES cores. Multiple AES cores may be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.