Cryptography – Particular algorithmic function encoding
Patent
1995-03-07
1996-07-09
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
380 9, 380 17, 380 18, 380 49, H04L 928
Patent
active
055352774
ABSTRACT:
An encryption communication apparatus of the present invention is embodied, for example, by a facsimile machine. A document original of plural pages set on the facsimile machine is read by a scanner section, and converted into image data on a page-by-page basis. A value N1 represents the second of the clock time at which the reading of each page of the document original is completed, and binary-coded data in an N1-th bit position counted from the front bit of each page of image data is inverted. Then, the image data is subjected to a predetermined encryption process, and transmitted in the form of facsimile signals via a communication line. Binary-coded data corresponding to a given pixel in the front portion (left upper portion) of the image data on each page of the document original is inverted. Therefore, even if a third party obtains the encrypted data corresponding to the front portion of the image data, decryption is very difficult and encryption security is ensured.
REFERENCES:
patent: 4091423 (1978-05-01), Branscome
patent: 4140873 (1979-02-01), Kinch, Jr. et al.
patent: 4459611 (1984-07-01), Arai et al.
patent: 4985919 (1991-01-01), Naruse et al.
patent: 5001750 (1991-03-01), Kato et al.
patent: 5166977 (1992-11-01), Ross
Nakamura Mitsuhiro
Shibata Kohichi
Gregory Bernarr E.
Mita Industrial Co. Ltd.
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