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Proceedings Paper

Security SVGA image sensor with on-chip video data authentication and cryptographic circuit
Author(s): P. Stifter; K. Eberhardt; A. Erni; K. Hofmann
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Paper Abstract

Security applications of sensors in a networking environment has a strong demand of sensor authentication and secure data transmission due to the possibility of man-in-the-middle and address spoofing attacks. Therefore a secure sensor system should fulfil the three standard requirements of cryptography, namely data integrity, authentication and non-repudiation. This paper is intended to present the unique sensor development by AIM, the so called SecVGA, which is a high performance, monochrome (B/W) CMOS active pixel image sensor. The device is capable of capturing still and motion images with a resolution of 800x600 active pixels and converting the image into a digital data stream. The distinguishing feature of this development in comparison to standard imaging sensors is the on-chip cryptographic engine which provides the sensor authentication, based on a one-way challenge/response protocol. The implemented protocol results in the exchange of a session-key which will secure the following video data transmission. This is achieved by calculating a cryptographic checksum derived from a stateful hash value of the complete image frame. Every sensor contains an EEPROM memory cell for the non-volatile storage of a unique identifier. The imager is programmable via a two-wire I2C compatible interface which controls the integration time, the active window size of the pixel array, the frame rate and various operating modes including the authentication procedure.

Paper Details

Date Published: 26 October 2005
PDF: 8 pages
Proc. SPIE 5986, Unmanned/Unattended Sensors and Sensor Networks II, 598608 (26 October 2005); doi: 10.1117/12.629455
Show Author Affiliations
P. Stifter, AIM Infrarot-Module GmbH (Germany)
K. Eberhardt, AIM Infrarot-Module GmbH (Germany)
A. Erni, AIM Infrarot-Module GmbH (Germany)
K. Hofmann, AIM Infrarot-Module GmbH (Germany)

Published in SPIE Proceedings Vol. 5986:
Unmanned/Unattended Sensors and Sensor Networks II
Edward M. Carapezza, Editor(s)

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