Thomas H Probert Deceased93 Cranbrook Dr, Holden, MA 01520

2003022, Nov 27, 2003

Feb 26, 2003

10/374255

Thomas Probert - Holden MA, US

Thomas Probert - Holden MA

G06F017/60

705/001000, 705/026000

An invention comprising a method and system for the identification and management on a computer network of rights, properties and constraints associated with creative works is described. One specific embodiment of the invention, relating to the online management of intellectual property rights, properties and constraints associated with learning materials which may be utilized in the development of Internet-based training, is described, but the invention is not limited to that application.

6782478, Aug 24, 2004

Apr 28, 1999

09/301209

Thomas Probert - Hopkinton MA, 01748

G06F 1130

713191, 713190, 713194, 713200, 713201

Techniques used in coding software are described. An encoder encodes a machine executable program or portions of a machine executable program. The encoding process uses a cipher table, a unique key for encoding, and an agreement between the encoder and decoder as to what portions of a machine executable will be encoded. By using the decoder on a computer system which may execute the encoded machine executable, the decoder may serve as a recognizer to only execute those machine executable programs which have been encoded and are recognized by the recognizer. If a machine executable is not recognized or rejected, appropriate actions may be taken other than the machine executable.

2017016, Jun 15, 2017

Feb 1, 2017

15/421624

- Holliston MA, US
Thomas H. Probert - Holden MA, US

G09C 5/00
G06F 21/12

A method for digital immunity includes identifying a call graph of an executable entity, and mapping nodes of the call graph to a cipher table of obscured information, such that each node based on invariants in the executable entity. A cipher table maintains associations between the invariants and the obscured information. Construction of an obscured information item, such as a executable set of instructions or a program, involves extracting, from the cipher table, ordered portions of the obscured information, in which the ordered portions have a sequence based on the ordering of the invariants, and ensuring that the obscured information matches a predetermined ordering corresponding to acceptable operation, such as by execution of the instructions represented by the obscured information, or steganographic target program (to distinguish from the executable entity being evaluated). The unmodified nature of the executable entity is assured by successful execution of the steganographic target program.

2016009, Mar 31, 2016

Nov 25, 2015

14/951707

- Holliston MA, US
Thomas H. Probert - Holden MA, US

H04L 9/32
G06F 21/12

A method for digital immunity includes identifying a call graph of an executable entity, and mapping nodes of the call graph to a cipher table of obscured information, such that each node based on invariants in the executable entity. A cipher table maintains associations between the invariants and the obscured information. Construction of an obscured information item, such as a executable set of instructions or a program, involves extracting, from the cipher table, ordered portions of the obscured information, in which the ordered portions have a sequence based on the ordering of the invariants, and ensuring that the obscured information matches a predetermined ordering corresponding to acceptable operation, such as by execution of the instructions represented by the obscured information, or steganographic target program (to distinguish from the executable entity being evaluated). The unmodified nature of the executable entity is assured by successful execution of the steganographic target program.

2014033, Nov 13, 2014

Jun 9, 2014

14/299408

Thomas H. Probert - Holden MA, US

G06F 21/60

713189

A method for digital immunity includes identifying a call graph of an executable entity, and mapping nodes of the call graph to a cipher table of obscured information, such that each node based on invariants in the executable entity. A cipher table maintains associations between the invariants and the obscured information. Construction of an obscured information item, such as a executable set of instructions or a program, involves extracting, from the cipher table, ordered portions of the obscured information, in which the ordered portions have a sequence based on the ordering of the invariants, and ensuring that the obscured information matches a predetermined ordering corresponding to acceptable operation, such as by execution of the instructions represented by the obscured information, or steganographic target program (to distinguish from the executable entity being evaluated). The unmodified nature of the executable entity is assured by successful execution of the steganographic target program.

2014010, Apr 17, 2014

Dec 10, 2010

12/965067

Thomas H. Probert - Holden MA, US

H04L 9/32

713170

A steganographic method to prevent the execution of malicious code and mitigate software piracy. The method uses invariant portions of machine instructions to create an executable watermark within unmodified code. This watermark can be verified at any stage of the software lifecycle, including dynamically and continuously during execution, to detect foreign code by verifying the integrity of the watermark prior to execution. In addition, the watermark may serve as a steganographic covert channel concealing additional information. Code invariants are not altered by binding operations such as loading and linking on different machines, and thus may be employed to consistently and repeatedly identify an unmodified instantiation of a particular program. The use of opcodes and register references as invariants avoids trivial register substitution as a means of program differentiation that eludes detection. The split key structure of the resulting cipher implies that knowledge of only the code (first key) or the cipher table (second key) alone is insufficient to derive the message.