Image encryption method and device

Details Image encryption method and device Image encryption method and device

2005-01-04

2005-01-04

Wright, Norman M. (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S246000

Reexamination Certificate

active

06839844

ABSTRACT:
A portion of an image is selected as an arbitrary rectangle indicated by diagonal coordinates, and this portion of an image is encrypted and embedded in the original rectangular image portion, thus accomplishing partial encryption of the image. This is done by an image encryption device, in which an partial image data selector, encryptor and decryptor are connected via a memory; and a display, auxiliary (external) memory, keyboard, mouse, image scanner, camera, etc. are also connected. At the time of decryption, the encrypted rectangle is decrypted and returned to its original state.

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