Duplicating and ciphering device and methods for codification of

Details Duplicating and ciphering device and methods for codification of Duplicating and ciphering device and methods for codification of

1991-07-01

1996-11-26

Cangialosi, Salvatore

Cryptography

Key management

Having particular key generator

H04L 900

Patent

active

055793924

ABSTRACT:
A duplicating and ciphering device in which, in order to retain the privacy of the document to be transmitted, the individual units of the duplicating and ciphering device are constructed as a duplicating machine, and annexation possibilities for an electronic memory for storing the information taken from the scanner and for a coding mechanism for coding this information. Such device can be used as a duplicating machine as well as a ciphering device for coding information before entering it into a fax machine. It is also suited to again emit incoming, encoded information in clear text. A method for coding facsimile telecopies is included whereby in sending, the original is scanned and transmitted line by line and at the receiving end a similar copy true to the original is printed out. In order to prevent confidential information from falling into the wrong hands, the content of the digital transmitted information is coded. A memory stores several dot rows and a coding mechanism, which interchanges the sequence of the stored dot rows and/or alters the relative position of the dot rows. The decoding follows then through entering a password or a coding card, for example.

REFERENCES:
patent: 4989244 (1991-01-01), Naruse et al.
patent: 5001750 (1991-03-01), Kato et al.
patent: 5007084 (1991-04-01), Materna et al.

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