System and method for proof-of-work based on hash mining for reducing spam attacks
US10715471B2 · kind B2 · utility
2Cited by
14References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Jan 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for providing a proof-of-work challenge based on hash mining for reducing spam attacks comprising: receiving an email message from a client device; determining a level of trustworthiness of the client device; generating a challenge message based on the determined trustworthiness of the client device; transmitting the challenge message to the client device; receiving a response to the challenge message from the client device; and forwarding the email to one or more recipients when the response to the challenge message is correct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.