Device and process for securizing a document and graphic authent

Details Device and process for securizing a document and graphic authent Device and process for securizing a document and graphic authent

1995-08-11

1997-07-29

Cain, David C.

Cryptography

Key management

Having particular key generator

380 51, 380 23, 380 30, H04N 144

Patent

active

056527942

ABSTRACT:
The invention relates to a device for securizing a document incorporating a processing module, which calculates and associates with each document page (10), comprising a zone (11) containing the text of the information to be certified, a graphic seal (12) representing it in the form of interlaced bar codes.
The invention also relates to a process for securizing a document and a graphic authentification code.
Particular application to the securized storage of documents and to securizing transmissions by fax.

REFERENCES:
patent: 5157726 (1992-10-01), Merkle et al.
patent: 5159630 (1992-10-01), Tsent et al.
patent: 5208858 (1993-05-01), Vollert et al.
patent: 5245655 (1993-09-01), Buhn et al.
patent: 5337361 (1994-08-01), Wang et al.
patent: 5388158 (1995-02-01), Berson
patent: 5422954 (1995-06-01), Berson
patent: 5530755 (1996-06-01), Pailles et al.

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