Lesley D Matheson

US Patent:

7581103, Aug 25, 2009

Filed:

Jun 13, 2002

Appl. No.:

10/172682

Inventors:

William G. Home - Lawrenceville NJ, US
Lesley R. Matheson - Discovery Bay CA, US
Casey Sheehan - Hollister CA, US
Robert E. Tarjan - Princeton NJ, US

Assignee:

InterTrust Technologies Corporation - Sunnyvale CA

International Classification:

H04L 9/00
H04L 9/32

US Classification:

713176, 713181, 713187

Abstract:

Software self-checking mechanisms are described for improving software tamper resistance and/or reliability. Redundant tests are performed to detect modifications to a program while it is running. Modifications are recorded or reported. Embodiments of the software self-checking mechanisms can be implemented such that they are relatively stealthy and robust, and so that it they are compatible with copy-specific static watermarking and other tamper-resistance techniques.

US Patent:

7739511, Jun 15, 2010

Filed:

Oct 29, 2007

Appl. No.:

11/927220

Inventors:

William G. Horne - Lawrenceville NJ, US
Umesh Maheshwari - San Jose CA, US
Robert E. Tarjan - Princeton NJ, US
James J. Horning - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Lesley R. Matheson - Campbell CA, US
Andrew K. Wright - Monroe Township NJ, US
Susan S. Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corp. - Sunnyvale CA

International Classification:

H04L 9/32
B42D 15/00
H04N 1/40

US Classification:

713176, 283113, 358 328

Abstract:

Systems and methods are disclosed for embedding information in software and/or other electronic content such that the information is difficult for an unauthorized party to detect, remove, insert, forge, and/or corrupt. The embedded information can be used to protect electronic content by identifying the content's source, thus enabling unauthorized copies or derivatives to be reliably traced, and thus facilitating effective legal recourse by the content owner. Systems and methods are also disclosed for protecting, detecting, removing, and decoding information embedded in electronic content, and for using the embedded information to protect software or other media from unauthorized analysis, attack, and/or modification.

US Patent:

7770016, Aug 3, 2010

Filed:

Apr 19, 2007

Appl. No.:

11/737428

Inventors:

William G. Horne - Lawrenceville NJ, US
Umesh Maheshwari - San Jose CA, US
Robert E. Tarjan - Princeton NJ, US
James J. Horning - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Lesley R. Matheson - Campbell CA, US
Andrew K. Wright - Monroe Township NJ, US
Susan S. Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

H04L 9/32
G06F 11/30
G06F 12/14

US Classification:

713176, 713189

Abstract:

Systems and methods are disclosed for embedding information in software and/or other electronic content such that the information is difficult for an unauthorized party to detect, remove, insert, forge, and/or corrupt. The embedded information can be used to protect electronic content by identifying the content's source, thus enabling unauthorized copies or derivatives to be reliably traced, and thus facilitating effective legal recourse by the content owner. Systems and methods are also disclosed for protecting, detecting, removing, and decoding information embedded in electronic content, and for using the embedded information to protect software or other media from unauthorized analysis, attack, and/or modification.

US Patent:

7779270, Aug 17, 2010

Filed:

May 13, 2005

Appl. No.:

11/129106

Inventors:

James J. Horning - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Robert E. Tarjan - Princeton NJ, US
Umesh Maheshwari - San Jose CA, US
William G. Horne - Lawrenceville NJ, US
Andrew K. Wright - Monroe Township NJ, US
Lesley R. Matheson - Campbell CA, US
Susan Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

G06F 11/30

US Classification:

713187, 713189

Abstract:

Systems and methods are disclosed for protecting a computer program from unauthorized analysis and modification. Obfuscation transformations can be applied to the computer program's local structure, control graph, and/or data structure to render the program more difficult to understand and/or modify. Tamper-resistance mechanisms can be incorporated into the computer program to detect attempts to tamper with the program's operation. Once an attempt to tamper with the computer program is detected, the computer program reports it to an external agent, ceases normal operation, and/or reverses any modifications made by the attempted tampering. The computer program can also be watermarked to facilitate identification of its owner. The obfuscation, tamper-resistance, and watermarking transformations can be applied to the computer program's source code, object code, or executable image.

US Patent:

7779394, Aug 17, 2010

Filed:

May 11, 2005

Appl. No.:

11/128097

Inventors:

James J. Homing - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Robert E. Tarjan - Princeton NJ, US
Umesh Maheshwari - San Jose CA, US
William G. Home - Lawrenceville NJ, US
Andrew K. Wright - Monroe Township NJ, US
Lesley R. Matheson - Campbell CA, US
Susan Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

G06F 9/45
G06F 21/00
G06F 11/30

US Classification:

717136, 717140, 726 23, 726 26, 713182, 713187

Abstract:

Systems and methods are disclosed for protecting a computer program from unauthorized analysis and modification. Obfuscation transformations can be applied to the computer program's local structure, control graph, and/or data structure to render the program more difficult to understand and/or modify. Tamper-resistance mechanisms can be incorporated into the computer program to detect attempts to tamper with the program's operation. Once an attempt to tamper with the computer program is detected, the computer program reports it to an external agent, ceases normal operation, and/or reverses any modifications made by the attempted tampering. The computer program can also be watermarked to facilitate identification of its owner. The obfuscation, tamper-resistance, and watermarking transformations can be applied to the computer program's source code, object code, or executable image.

US Patent:

7823135, Oct 26, 2010

Filed:

Apr 7, 2005

Appl. No.:

11/102306

Inventors:

James J. Horning - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Robert E. Tarjan - Princeton NJ, US
Umesh Maheshwari - San Jose CA, US
William G. Horne - Lawrenceville NJ, US
Andrew K. Wright - Monroe Township NJ, US
Lesley R. Matheson - Campbell CA, US
Susan Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

G06F 9/44

US Classification:

717127, 717126, 713187, 713188, 713189, 713190

Abstract:

Systems and methods are disclosed for protecting a computer program from unauthorized analysis and modification. Obfuscation transformations can be applied to the computer program's local structure, control graph, and/or data structure to render the program more difficult to understand and/or modify. Tamper-resistance mechanisms can be incorporated into the computer program to detect attempts to tamper with the program's operation. Once an attempt to tamper with the computer program is detected, the computer program reports it to an external agent, ceases normal operation, and/or reverses any modifications made by the attempted tampering. The computer program can also be watermarked to facilitate identification of its owner. The obfuscation, tamper-resistance, and watermarking transformations can be applied to the computer program's source code, object code, or executable image.

US Patent:

8001388, Aug 16, 2011

Filed:

Jul 16, 2009

Appl. No.:

12/504567

Inventors:

William G. Home - Lawrenceville NJ, US
Lesley R. Matheson - Discovery Bay CA, US
Casey Sheehan - Hollister CA, US
Robert E. Tarjan - Princeton NJ, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

H04L 9/32
H04L 9/00

US Classification:

713187, 713176, 726 26

Abstract:

Software self-checking mechanisms are described for improving software tamper resistance and/or reliability. Redundant tests are performed to detect modifications to a program while it is running. Modifications are recorded or reported. Embodiments of the software self-checking mechanisms can be implemented such that they are relatively stealthy and robust, and so that it they are compatible with copy-specific static watermarking and other tamper-resistance techniques.

US Patent:

8140850, Mar 20, 2012

Filed:

Dec 8, 2008

Appl. No.:

12/330482

Inventors:

William G. Horne - Lawrenceville NJ, US
Umesh Maheshwari - San Jose CA, US
Robert E. Tarjan - Princeton NJ, US
James J. Horning - Palo Alto CA, US
W. Olin Sibert - Lexington MA, US
Lesley R. Matheson - Campbell CA, US
Andrew K. Wright - Monroe Township NJ, US
Susan S. Owicki - Palo Alto CA, US

Assignee:

Intertrust Technologies Corporation - Sunnyvale CA

International Classification:

H04L 9/32
G06F 9/44
H04N 1/40
B42D 15/00

US Classification:

713176, 717114, 358 328, 283113

Abstract:

Systems and methods are disclosed for embedding information in software and/or other electronic content such that the information is difficult for an unauthorized party to detect, remove, insert, forge, and/or corrupt. The embedded information can be used to protect electronic content by identifying the content's source, thus enabling unauthorized copies or derivatives to be reliably traced, and thus facilitating effective legal recourse by the content owner. Systems and methods are also disclosed for protecting, detecting, removing, and decoding information embedded in electronic content, and for using the embedded information to protect software or other media from unauthorized analysis, attack, and/or modification.