ENCRYPTING PIN PAD
First Claim
Patent Images
1. An Encrypting PIN Pad (EPP) comprising:
- a first layer comprising at least two spaced apart electrode elements; and
a second layer comprising at least one bridge element for electrically bridging a space between the at least two electrode elements when the first layer and the second layer are urged together.
9 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a method and apparatus for protecting an Encrypting PIN Pad (EPP) against tampering. The apparatus provides an EPP comprising a first layer comprising at least two spaced apart electrode elements, and a second layer comprising at least one bridge element for electrically bridging a space between the at least two electrode elements when the first layer and the second layer are urged together.
-
Citations
15 Claims
-
1. An Encrypting PIN Pad (EPP) comprising:
-
a first layer comprising at least two spaced apart electrode elements; and a second layer comprising at least one bridge element for electrically bridging a space between the at least two electrode elements when the first layer and the second layer are urged together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of detecting tampering at an Encrypting PIN Pad (EPP), comprising the steps of:
-
in a normal mode of operation, providing an electrically conductive bridge via a layer in an EPP between at least two spaced apart electrode elements on a further layer of the EPP; and in a tamper mode of operation, removing the bridge between the electrode elements. - View Dependent Claims (14)
-
-
15. An Encrypting PIN Pad (EPP) comprising:
-
a housing defining (i) a plurality of key apertures and (ii) a plurality of pins extending from a lower surface; a plurality of keys, each key being located within a respective one of the plurality of key apertures; a support plate mounted to the lower surface of the housing and defining (i) a plurality of key apertures, each key aperture being disposed in registration with a respective one of the plurality of keys and (ii) a plurality of pin apertures, each aperture being disposed in registration with a respective one of the plurality of pins; an elastomeric mat mounted to the support plate; a multi-layer keyboard printed circuit board comprising a plurality of key domes, each key dome being disposed in registration with a respective key, and a plurality of separation switches, each separation switch being disposed in registration with a respective one of the plurality of pins; a backplate mounted on the multi-layer keyboard printed circuit board and secured to the housing; a cryptographic printed circuit board coupled to the keyboard printed circuit board via an elongate connector; and a cover mounted on the cryptographic printed circuit board and secured to the housing to maintain the keys, the support plate, the elastomeric mat, the keyboard printed circuit board, the backplate, and the cryptographic printed circuit board in position as an integrated unit.
-
Specification