Cryptographic countermeasures against connection depletion attacks
US7197639B1 · kind B1 · utility
274Cited by
17References
55Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2000 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Feb 2, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1458
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention relates to cryptographic communications methods and systems that protect a server from a connection depletion attack. Specifically, the invention presents a method for allocating a resource comprising the steps of receiving a resource allocation request from a client, imposing a computational task and a time limit for correct completion of the task upon the client, verifying that the task was performed correctly within the time limit, and allocating the resource if the task was correctly performed within the time limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.