Yuqun Y Chen

7228426, Jun 5, 2007

Apr 3, 2002

10/116263

Saurabh Sinha - Seattle WA, US
Mariusz H. Jakubowski - Bellevue WA, US
Ramarathnam Venkatesan - Redmond WA, US
Yuqun Chen - Bellevue WA, US
Matthew Cary - Seattle WA, US
Ruoming Pang - Shanghai, CN

Microsoft Corporation - Redmond WA

H04L 9/00
G06F 11/00
G06F 12/14
G06F 12/16
G06F 15/18

713176, 726 23, 726 24

An implementation of a technology, described herein, for facilitating the protection computer-executable instructions, such as software. At least one implementation, described herein, may generate integrity signatures of one or more program modules—which are sets of computer-executable instructions—based upon a trace of activity during execution of such modules and/or near-replicas of such modules. With at least one implementation, described herein, the execution context of an execution instance of a program module is considered when generating the integrity signatures. With at least one implementation, described herein, a determination may be made about whether a module is unaltered by comparing integrity signatures. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

7254586, Aug 7, 2007

Jun 28, 2002

10/185644

Yuqun Chen - Bellevue WA, US
Ramarathnam Venkatesan - Redmond WA, US
Mariusz H. Jakubowski - Bellevue WA, US

Microsoft Corporation - Redmond WA

G06F 7/00
G06F 11/30
G06F 12/14
H04L 9/32

707104, 707 1, 713190, 713194

A method, apparatus, and article of manufacture for providing secure and opaque type libraries to automatically provide secure variables within a programming module. A system for providing secure and opaque type libraries to automatically provide secure variables within a programming module. The system includes an OTL selection module, an OTL substitution module, an OTL type library database, a compiler module; and a linker module to create an executable processing module. The OTL selection module randomly selects or generates one of the possible variable obfuscation functions for each declared secure variable. The OTL substitution module substitutes the separate instance of the selected variable obfuscation function for every reference to the declared secure variable. The OTL type library database receives queries from the OTL selection module a database to identify of possible variable obfuscation functions applicable for the variable type corresponding to the declared secure variables.

7346780, Mar 18, 2008

Apr 3, 2002

10/116440

Saurabh Sinha - Seattle WA, US
Mariusz H. Jakubowski - Bellevue WA, US
Ramarathnam Venkatesan - Redmond WA, US
Yuqun Chen - Bellevue WA, US
Matthew Cary - Seattle WA, US
Ruoming Pang - Shanghai, CN

Microsoft Corporation - Redmond WA

G06F 11/30
G06F 12/14

713187, 713176, 713194, 726 24

An implementation of a technology, described herein, for facilitating the protection computer-executable instructions, such as software. At least one implementation, described herein, may generate integrity signatures of multiple sets of computer-executable instructions based upon the output trace and/or an execution trace of such sets. With at least one implementation, described herein, a determination may be made about whether two or more of such sets are unaltered duplicates by comparing integrity signatures of such sets. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

7497379, Mar 3, 2009

Feb 27, 2004

10/789904

Yuqun Chen - Bellevue WA, US
Darko Kirovski - Bellevue WA, US
Yacov Yacobi - Mercer Island WA, US
Gideon A. Yuval - Mercer Island WA, US

Microsoft Corporation - Redmond WA

G06K 7/10

235454, 713179

Techniques are disclosed to enable utilization of randomly-occurring features of a label (whether embedded or naturally inherent) to provide counterfeit-resistant and/or tamper-resistant labels. More specifically, labels including randomly-occurring features are scanned to determine the labels' features. The information from the scan is utilized to provide identifying indicia which uniquely identifies each label and may be later verified against the label features that are present to determine whether the label is genuine. In a described implementation, the identifying indicia may be cryptographically signed.

7610623, Oct 27, 2009

Dec 6, 2005

11/275060

Saurabh Sinha - Seattle WA, US
Mariusz H. Jakubowski - Bellevue WA, US
Ramarathnam Venkatesan - Redmond WA, US
Yuqun Chen - Bellevue WA, US
Matthew Cary - Seattle WA, US
Ruoming Pang - Shanghai, CN

Microsoft Corporation - Redmond WA

G06F 12/14
H04L 1/00
G08B 23/00

726 23, 713176, 717135

An implementation of a technology, described herein, for facilitating the protection of computer-executable instructions, such as software. At least one implementation, described herein, may generate integrity signatures of one or more program modules—which are sets of computer-executable instructions—based upon a trace of activity during execution of such modules and/or near-replicas of such modules. With at least one implementation, described herein, the execution context of an execution instance of a program module is considered when generating the integrity signatures. With at least one implementation, described herein, a determination may be made about whether a module is unaltered by comparing integrity signatures. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

7620199, Nov 17, 2009

Aug 4, 2005

11/196888

M. Kivanc Mihcak - Redmond WA, US
Yuqun Chen - Bellevue WA, US
Mariusz Jakubowski - Bellevue WA, US

Microsoft Corporation - Redmond WA

G06K 9/00
G06K 9/36

382100, 382251

Systems and methods are described that apply a watermark to data, such as data representing an image. In one implementation, the complexity of the image is measured. A quantization step size is calculated, based in part on the measured complexity of the image. A watermark or message is embedded into the image using the quantization step sizes derived for each coefficient of interest. In a further implementation, a mark decoding system is configured to extract the embedded message from the image data.

7631292, Dec 8, 2009

Nov 5, 2003

10/701972

Yuqun Chen - Bellevue WA, US

Microsoft Corporation - Redmond WA

G06F 9/44
G06F 9/45
G06F 11/30

717108, 717106, 717111, 717159, 713190, 713194

An intrusion-resistant mechanism based on restricted code segments and code individualization is able to thwart significant amounts of known and unknown low-level attacks that inject invalid code, in the form of false data or instructions for execution by a victim application, by varying the locations of code-containing segments within a memory space corresponding to an application.

7644440, Jan 5, 2010

Dec 6, 2005

11/275061

Saurabh Sinha - Seattle WA, US
Mariusz H. Jakubowski - Bellevue WA, US
Ramarathnam Venkatesan - Redmond WA, US
Yuqun Chen - Bellevue WA, US
Matthew Cary - Seattle WA, US
Ruoming Pang - Shanghai, CN

Microsoft Corporation - Redmond WA

G06F 12/14
H04L 1/00
G08B 23/00

726 23, 713176, 717135

An implementation of a technology, described herein, for facilitating the protection of computer-executable instructions, such as software. At least one implementation, described herein, may generate integrity signatures of one or more program modules—which are sets of computer-executable instructions—based upon a trace of activity during execution of such modules and/or near-replicas of such modules. With at least one implementation, described herein, the execution context of an execution instance of a program module is considered when generating the integrity signatures. With at least one implementation, described herein, a determination may be made about whether a module is unaltered by comparing integrity signatures. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.