Keyed human interactive proof players
US8984292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Oct 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A human interactive puzzle (HIP) authorization architecture where keyed and animated puzzles are executed by HIP players which are distinct and obfuscated to the point where breaking a single player is a relatively costly operation. A key is created in response to a request for a service, a HIP player is created based on the key, and a small installation executable is created that expands during installation to produce a computationally expensive data structure on the client relative to verification of the solution at the server. Thus, copying of the player or relay of the puzzle to a third system requires more time than allowed to receive the solution at the server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.