Secure keyboard

Details Secure keyboard Secure keyboard

Filed on

2005-12-02

Date issued

2010-11-16

Examiner

Gergiso, Techane J (Department: 2437)

Patent Class

Cryptography

SubClass

Video cryptography

SubSubClass

Video electric signal modification

Other Related Categories

C710S012000

Type

Reexamination Certificate

Status

active

Patent number

07835521

Description

ABSTRACT:
A secure keyboard combines a human interface device (HID), application programs stored in nonvolatile memory, and encryption technologies into a single package. Like any other keyboard, the secure keyboard communicates with a computer via a communications port. A computer can load and execute an application stored in the secure keyboard. The application, however, expects encrypted inputs. The HID inputs are encrypted before being passed to the computer and thence the application. Therefore, a secure link exists from the HID to the application. Choosing strong encryption and unique encryption/decryption keys allows applications to be keyed to a specific secure keyboard. No other keyboard can supply keyboard input to the application. The secure keyboard can be implemented as a security device that does not include a keyboard. The security device can accept HID inputs from HID devices, encrypts them, and passes them to the computer and thence the application.

REFERENCES:
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patent: 2005/0177649 (2005-08-01), Chung Geon et al.
patent: 2008/0313370 (2008-12-01), Kang et al.
Treat, Daniel G., “Keyboard Encryption”,IEEE Potentials, Aug. 2002, pp. 40-42.

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