Device, method, and program for image encryption/decryption
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United States of America Patent
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Apr 30, 2013
Grant Date -
Oct 22, 2009
app pub date -
Apr 17, 2009
filing date -
Oct 31, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In order to encrypt a part of an input image in such a manner that the encrypted part can be located for decryption, means for regularly converting pixel values in the area to be encrypted and generating a pattern unique to the pixel value conversion in order to encrypt the area to be encrypted; means for setting a specified positioning marker for locating an encryption position at two or more of the four corners of the area to be encrypted; and means for setting one or more checking marks for verifying appropriateness of a decrypted image in the encrypted area before the decryption are included.
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