IP Library › Granted Patent US 9,519,776
Granted Patent B2
US 9,519,776 · App. 14/267,545 · Granted Dec 13, 2016

Computer security system and method

Inventor: Charles Wood (Pittsburgh, PA)
Assignee: Duquesne University of the Holy Spirit
G06F21/55H04N1/32352G06F2221/2107
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Quick Facts
Patent No.
US 9,519,776
App. No.
14/267,545
Granted
Dec 13, 2016
Kind
B2
Abstract

The present invention is a computer security system and method in which the various algorithms not only do not search for or detect the presence of a steganographic or other hidden image in a data file or across data files, but also includes at least one or more combined approaches for altering and neutralizing any hidden messages without significantly detracting from the underlying integrity of the data file or files thus treated.

Claims (11)

1. A computer security method consisting essentially of

selecting a computer;

selecting a program embodied in said computer configured to execute steps;

said program being free from any code or algorithm for identifying the presence of a steganographic payload in a computer file to be analyzed by said program; and

said program containing algorithms to remove one or more hidden messages in a data file or across data files by selecting at least one data file containing a hidden message and selected from the group consisting of an image file, an audio file, a video file, a Flash-Adobe type file and a Metadata document support type file, and

changing in said at least one data file some or all of the one or more least significant bit or bits in bytes that are used to represent image colors or grey scale, audio sounds, animation, spacing, font characteristics, page layout characteristics, metadata structures, packet headers and/or video within multimedia data files, in a way that cannot be reversed once the change is deployed, by i) changing all the least significant bits to 1; or ii) changing all the least significant bits to 0; or iii) randomly changing some of the one or more least significant bits; or iii) incrementing or decrementing the value of the least significant bit by some value; or iv) using some computer algorithm, program, or module that alters the least significant bits, prior to any reception or transmission of the data file, wherein when said program is deployed using a computer to process at least one data file, said hidden message in said data file is neutralized.

2. The computer security method according to claim 1 , wherein said data file is treated by said computer security system and method prior to transferring said file from a secured computer network to another computer network.

3. The computer security method according to claim 1 further including a scrambling method that adjusts the bits in said data file.

4. The computer security method according to claim 1 wherein said method includes conversion methods that convert each least significant bit in each byte in an image file to either all “0s” or all “1s”.

5. The computer security method according to claim 1 wherein said method includes applying encryption methods that neutralize any steganographic embedding or tracking of any hidden message in said data file.

6. The computer security method according to claim 1 wherein said data file contains at least one hidden message and at least one decoy message.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2018
From: DUQUESNE UNIVERSITY OF THE HOLY SPIRIT
To: WOOD, CHARLES
Reel/Frame 044786/0401 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 1, 2014
From: WOOD, CHARLES A, DR
To: DUQUESNE UNIVERSITY OF THE HOLY SPIRIT
Reel/Frame 032803/0738 →
Continuity (2)
Provisional Application 61862600 · Aug 6, 2013
Related Publication 20150047037A1 · Feb 12, 2015