Secure electronic forms permitting layout revision

Details Secure electronic forms permitting layout revision Secure electronic forms permitting layout revision

1996-12-03

2000-02-22

Hayes, Gail O.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 3, 380 18, H04K 100

Patent

active

060289384

ABSTRACT:
Techniques for ensuring the security of forms data are disclosed. The layout for a particular form is signed separately from the data used to fill out the form using encryption techniques. The signed data is related to the signed layout in a way which permits the layout to be changed without requiring the data to be changed while still guaranteeing that a changed layout does not change the original meaning of the signed data.

REFERENCES:
patent: 4458109 (1984-07-01), Muller-Schloer
patent: 5848158 (1998-12-01), Saito et al.
Xerox Corporation, Printer, News Release, p. 1, Sep. 11, 1991.

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