CONSTRUCTING IMAGE CAPTCHAS UTILIZING PRIVATE INFORMATION OF THE IMAGES
First Claim
Patent Images
1. A method, comprising:
- accessing a plurality of candidate images, each candidate image comprising public information and private information;
selecting one or more images from the plurality of candidate images based at least in part on each image'"'"'s public information and private information; and
constructing a CAPTCHA comprising the one or more images, a challenge, and a correct response,wherein it is difficult for a computer to automatically determine the correct response using only the public information of each of the one or more images, andwherein the private information of each of the one or more images is accessible only to an entity responsible for constructing the CAPTCHA.
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Abstract
An image CAPTCHA having one or more images, a challenge, and a correct answer to the challenge is constructed by selecting the one or more images from a plurality of candidate images based at least in part on each image'"'"'s public information and private information. The private information of each of the images is accessible only to an entity responsible for constructing the CAPTCHA. Optionally, the one or more images are selected further based on the specific type of the CAPTCHA to be constructed.
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Citations
20 Claims
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1. A method, comprising:
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accessing a plurality of candidate images, each candidate image comprising public information and private information; selecting one or more images from the plurality of candidate images based at least in part on each image'"'"'s public information and private information; and constructing a CAPTCHA comprising the one or more images, a challenge, and a correct response, wherein it is difficult for a computer to automatically determine the correct response using only the public information of each of the one or more images, and wherein the private information of each of the one or more images is accessible only to an entity responsible for constructing the CAPTCHA. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product comprising a plurality of computer program instructions physically stored in a computer-readable medium, wherein the plurality of computer program instructions are operable to cause at least one computing device to:
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access a plurality of candidate images, each candidate image comprising public information and private information; select one or more images from the plurality of candidate images based at least in part on each image'"'"'s public information and private information; and construct a CAPTCHA comprising the one or more images, a challenge, and a correct response, wherein it is difficult for a computer to automatically determine the correct response using only the public information of each of the one or more images, and wherein the private information of each of the one or more images is accessible only to an entity responsible for constructing the CAPTCHA. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification