IMAGE ENCRYPTION USING PSEUDO RANDOM NUMBER GENERATOR
Original Publication Date: 1992-Feb-29
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
The present invention is directed towards a method of encrypting an image using a pseudo random number generator. The applications for such encrypted image files are not described herein, however, it is apparent that efficient methods of encoding and decoding are desirable. Given that it would take approximately 200 times longer to encrypt a 300 spot per inch (spi) image which fills a standard size page, versus the same page filled with text, the need for a faster encryption method is apparent. Furthermore, because each byte of image data has less information content, the encryption method may not need to be as secure.