Facsimile message encryption system

Details Facsimile message encryption system Facsimile message encryption system

1991-05-29

1992-10-27

Swann, Tod

Cryptography

Key management

Having particular key generator

380 49, 380 50, 379100, 358483, H04N 144

Patent

active

051596300

ABSTRACT:
A system for maintaining the security of information transmitted between facsimile machines includes a transmitting/receiving facsimile machine for receiving input sheets having an encryption zone; an image sensor for detecting the encryption zones; an encryption device for scrambling messages that appear within an encryption zone. Further the system includes means for sensing encryption zones on transmitted messages and for decoding messages that have been scrambled within the encryption zones.

REFERENCES:
patent: 4454575 (1984-06-01), Bushaw et al.
patent: 4694352 (1987-09-01), Ina et al.
patent: 4901068 (1990-02-01), Benton et al.
patent: 4985919 (1991-01-01), Naruse et al.
patent: 4989244 (1991-01-01), Naruse et al.
"Facsimile with encrypted hard copy"; R A Meyers et al.; IBM Technical Disclosure Bulletin; vol. 20 No. 11B, Apr. 1978 pp. 4994-4995.

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