First computer process and second computer process proxy-executing code on behalf thereof

• US 7,788,496 B2
• Filed: 10/08/2003
• Issued: 08/31/2010
• Est. Priority Date: 10/08/2003
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Lelikov, Andrey, Hatlelid, Kristjan E., Gunyakti, Caglar
• Primary Examiner(s): Parthasarathy; Pramila
• Application Number:
  US10/681,017
• Publication Number:
  US 20050081050A1
• Time in Patent Office: 2,519 Days
• Field of Search: 726/2, 726/26
• US Class Current: 713/182
• CPC Class Codes: G06F 21/125 by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code

Abstract

A first process operating on a computer comprises code to be executed in connection therewith, where the code includes at least one triggering device. A digital license corresponds to the first process and sets forth terms and conditions for operating the first process. A second process operating on the computer proxy-executes code corresponding to each triggering device of the first process on behalf of such first process. The second process includes a license evaluator for evaluating the license to determine whether the first process is to be operated in accordance with the terms and conditions set forth in such license, and the second process chooses whether to in fact proxy-execute based at least in part on determination of the license evaluator. Thus, the first process is dependent upon the second process for operation thereof.

Claims

1. A computer system comprising:

a processing unit; and

a memory;

the processing unit executing first code defining a first process operating on the computer, the first code executing on the processing unit implementing at least one triggering device;

the memory holding a digital license corresponding to the first process, the license setting forth terms and conditions for operating the first process; and

the processing unit executing second code defining a second process operating on the computer for proxy-executing code corresponding to each triggering device of the first process on behalf of such first process, the second process including a license evaluator for evaluating the license to determine whether the first process is to be operated in accordance with the terms and conditions set forth in such license, the second process choosing whether to in fact proxy-execute the code corresponding to each triggering device of the first process on behalf of such first process based at least in part on whether the license evaluator has determined that the first process is to be operate in accordance with the terms and conditions of the license, whereby the first process is dependent upon the second process for operation thereof.

2. The computer of claim 1 wherein the first process is an application and the second process a rights client.

3. The computer of claim 1 further comprising a table available to the second process, the table including the code corresponding to each triggering device of the first process and an address of the triggering device in the first process.

4. The computer of claim 3 wherein the table is set forth in the license.

5. The computer of claim 4 wherein the code corresponding to each triggering device of the first process is encrypted within the table and is decryptable according to a decryption key obtainable by the second process.

6. The computer of claim 5 wherein the license includes the decryption key encrypted in a manner decryptable by the second process.

7. A method in combination with a computer having a first process operating thereon and comprising code executing in connection therewith, the code including at least one triggering device, and a table including a code section corresponding to each triggering device of the first process and an address of the triggering device in the first process, the method for a second process operating on the computer to proxy-execute code corresponding to each triggering device of the first process on behalf of such first process, the method comprising:

the second process monitoring for when the first process executes a triggering device thereof;

the first process executing a triggering device and halting;

the second process noting the triggering device being executed by the first process and responding thereto by;

determining an address of the triggering device within the first process;

locating in the table the code section corresponding to the triggering device based on the determined address;

proxy-executing the located code section on behalf of the first process; and

signaling to the first process that the triggering device has been dealt with; and

the first process then resuming, whereby the first process is dependent upon the second process for operation thereof.

8. The method of claim 7 wherein the computer further includes a digital license corresponding to the first process, the license setting forth terms and conditions for operating the first process, the method further comprising the second process evaluating the license and verifying that the first process is operating in accordance with the terms and conditions set forth in such license prior to proxy-executing the located code section on behalf of the first process.

9. The method of claim 7 wherein the located code section is encrypted, the method further comprising the second process decrypting the located code section before proxy-executing same.

10. The method of claim 7 wherein each triggering device is a particular exception and comprising the second process monitoring for when the first process executes the particular exception.

11. The method of claim 10 further comprising the second process attaching to the first process so as to monitor the first process for the particular exception directly.

12. The method of claim 7 wherein each triggering device is one of a plurality of types of exceptions and comprising the second process monitoring for when the first process executes any of the types of exceptions, the second process responding to each type of exception in a differing manner.

13. The method of claim 7 wherein the computer further includes a digital license corresponding to the first process, the license setting forth terms and conditions for operating the first process, and wherein the second process proxy-executing the located code section on behalf of the first process comprises the second process securely retrieving a term or condition from the license and employing same on behalf of the first process.