Method and apparatus for increasing the output of a cryptographic system
US8370622B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The rate at which packets are provided to a cryptographic engine of a cryptographic system may be adjusted using a feedback mechanism to increase the output of the cryptographic system. Data is classified and queued on a per class/flow basis and stored in input queues prior to being processed by the cryptographic engine. A class based queue scheduler is implemented to select data from the input queues to be transmitted to the cryptographic engine. The cryptographic engine operates in processing cycles. At each cycle, an amount of data is transferred from the input queues to a cryptographic engine input queue. A cryptographic accelerator in the cryptographic engine processes the data on the cryptographic engine input queue during the cycle. The output rate of the cryptographic accelerator is measured during the cycle and this value is used as feedback to determine how much data should be passed to the cryptographic engine for a subsequent cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.