Security SVGA image sensor with on-chip video data authentication and cryptographic circuit

Details Security SVGA image sensor with on-chip video data authentication and cryptographic circuit Security SVGA image sensor with on-chip video data authentication and cryptographic circuit

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5986...69s&link_type=abstract

Unmanned/Unattended Sensors and Sensor Networks II. Edited by Carapezza, Edward M. Proceedings of the SPIE, Volume 5986, pp.

Computer Science

Performance

Scientific paper

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.

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