Method for hiding a binary encoded message in an electronic docu

Details Method for hiding a binary encoded message in an electronic docu Method for hiding a binary encoded message in an electronic docu

1996-11-14

1999-07-06

Powell, Mark R.

Data processing: database and file management or data structures

Database design

Data structure types

707531, 380 4, 283 72, G06F 1721, H04L 928

Patent

active

059208783

ABSTRACT:
Embodiments of the present invention are capable of hiding a message, such as, for example, a copyright notice or other indicium of authorship, in an electronic document. An illustrative embodiment of the present invention comprises encoding an electronic document with a plurality of tags from a case insensitive markup language; and modulating the case of at least one tag character in at least one of said plurality of tags with a binary string, wherein the binary string represents a message to be hidden in the electronic document.

REFERENCES:
patent: 5428529 (1995-06-01), Hatrick et al.
patent: 5532920 (1996-07-01), Hatrick et al.
patent: 5629770 (1997-05-01), Brassil et al.
patent: 5721827 (1998-02-01), Logan et al.
patent: 5818933 (1998-10-01), Kambe et al.
"The Codebreakers, The Story of Secret Writing," David Kahn, The Macmillan Company, 1967, p. xiii, p. 81 (second and third paragraphs, in particular); an pp. 516-522 (pp. 519, second paragraph to 522, in particular). Jan. 1967.

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