Anti-prying encrypted keyboard
US8872047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2011 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Oct 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F19/201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An pry-proof encrypted keyboard. The encrypted keyboard comprises a keyboard panel (1), a lining board (2) assembled under the keyboard panel (1), a waterproof silicon rubber (4) and a main control panel (5). Convex rib circles (22) are provided on the circumference of the surface of the lining board (2) attached with the waterproof silicon rubber (4). The waterproof silicon rubber is extruded by the lining board (2) when the encrypted keyboard is assembled, and the thickness of corresponding waterproof silicon rubber (4) extruded by the convex rib circles (22) is less than 0.2 MM. The metallic lining board (2) can efficiently prevent fusion attack from the lateral face of the encrypted keyboard, meanwhile two convex rib circles (22) are added on the circumference of the surface of the lining board attached with the water silicon rubber (4), so that the thickness of the waterproof silicon rubber (4) at the grooves (41) is less than 0.2 MM, which is the diameter of the known thinnest needle, thus the attackers could not easily breakthrough the lining board (2) or the waterproof silicon rubber (4) to reach the inside of the encrypted keyboard, as a result illegally leading the wire o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.