Mask based challenge response test

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United States of America Patent

PATENT NO 8898740
SERIAL NO

13155654

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Abstract

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A computing system includes a processor; and a memory communicatively coupled to the processor. The processor is configured to: generate a challenge response test image comprising a plurality of well-formed construct elements forming a well-formed construct and a plurality of random construct elements; and provide a plurality of masks to be placed over the image, one of the number of masks configured to reveal the well-formed construct elements when placed over the image.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kruger, Stephen Paul Dublin, IE 4 54
Pieczul, Olgierd Stanislaw Dublin, IE 36 655

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