IP Library › Granted Patent US 11,070,373
Granted Patent B2
US 11,070,373 · App. 15/901,455 · Granted Jul 20, 2021

Masked key hopping

Inventors: Michael J. T. Chan (Cupertino, CA); Derek Chamorro (Austin, TX); Venkata Siva Vijayendra Bhamidipati (Milpitas, CA); Glenn G. Lebumfacil (Dublin, CA); Ralph Scott Forsythe (Denver, CO)
Assignee: eBay Inc.
H04L9/0894G06F21/52G06F21/62G06F21/75H04L9/0891H04L2209/04
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Quick Facts
Patent No.
US 11,070,373
App. No.
15/901,455
Granted
Jul 20, 2021
Kind
B2
Abstract

Methods, systems, and media for improving computer security and performance of security are disclosed. In one example, a computer security system comprises a key management monitor, and two key elements comprising a first key element and a second key element. The first key element is stored at a first location address within a computer memory and the second key element is stored at a second location address. The key management monitor is configured to determine or receive a time duration for performing a data dump of contents of the computer memory. In one example, the key management monitor is further configured to control a location of the first key element within the computer memory, wherein the location address of the first key element is changed within a time period that is less than the time duration for performing the data dump of contents of the computer memory.

Claims (45)

1. A computer security system comprising:

a key management monitor, and two key elements comprising a first key element and a second key element, the first key element stored at a first location address within a computer memory and the second key element stored at a second location address, wherein the key management monitor is configured to:

determine a time duration for performing a transaction using the computer memory,

determine a periodic time interval for moving the first key element to a different location within the computer memory, wherein the determined periodic time interval is a time period that is less than the time duration for performing the transaction using the computer memory,

store the first key element, at a first point in time, at a first location within the computer memory, and

relocate, at a second point in time that is the determined periodic time interval after the first point in time, the first key element to a second location within the computer memory.

2. The computer security system of claim 1 , wherein the time period is less than the time duration for performing a data dump of contents of the computer memory between the first location address and the second location address.

3. The computer security system of claim 1 , wherein the time period is based on a distance between the first location address and the second location address, and wherein the distance between the first location address and the second location address is changed continuously on a random basis.

4. The computer security system of claim 3 , wherein the distance between the first location address and the second location address is changed continuously on a random basis, and wherein each distance and value is changed within a time period that is less than the time duration for performing a data dump of contents of the computer memory.

5. The computer security system of claim 1 , wherein the key management monitor is further configured to test an entropy of a system which includes the computer memory before a paradigm for controlling the location of the first key element within the computer memory is accepted for use.

6. The computer security system of claim 1 , wherein the two key elements includes a key shuffle index mask.

7. The computer security system of claim 1 , wherein the two key elements includes a memory location storing a changing memory address.

8. An computer security method comprising:

identifying two key elements, the two key elements including a first key element and a second key element, the first key element stored at a first location address and the second key element stored at a second location address within a computer memory;

determining a time duration for performing a transaction within a computer system which includes the computer memory;

determining a periodic time interval for moving the first key element to a different location within the computer memory, wherein the determined periodic time interval is a time period that is less than the time duration for performing the transaction using the computer memory;

storing the first key element, at a first point in time, at a first location within the computer memory; and

relocating, at a second point in time that is the determined periodic time interval after the first point in time, the first key element to a second location within the computer memory.

9. The computer security method of claim 8 , wherein the transaction includes performing a data dump of contents of the computer memory.

10. The computer security method of claim 9 , further comprising:

identifying the time period based on a distance between the first location address and the second location address; and

changing the distance between the respective location addresses continuously on a random basis.

11. The computer security method of claim 10 , further comprising:

changing the distance between the location addresses for each of the two key elements, and a value for each of the location addresses continuously on a random basis; and

changing each distance and value within a time period that is less than the time duration for performing the data dump of contents of the computer memory.

12. The computer security method of claim 11 , further comprising:

configuring a key monitor to test an entropy of the computer system which includes the computer memory before a paradigm for controlling the location of the at least one of the two key elements within the computer memory is accepted for use.

13. The computer security method of claim 8 , wherein the two key elements further include one or both of key shuffle index mask and a memory location storing a changing memory location address.

14. A non-transitory machine-readable medium including instructions that, when read by a machine in a computer security system, cause the machine to perform operations for a method comprising at least:

identifying two key elements, the two key elements including a first key element and a second key element, the first key element stored at a first location address and the second key element stored at a second location address within a computer memory;

determining a time duration for performing a transaction within a computer system which includes the computer memory;

determining a periodic time interval for moving the first key element to a different location within the computer memory, wherein the determined periodic time interval is a time period that is less than the time duration for performing the transaction using the computer memory,

storing the first key element, at a first point in time, at a first location within the computer memory; and

relocating, at a second point in time that is the determined periodic time interval after the first point in time, the first key element to a second location within the computer memory.

15. The medium of claim 14 , wherein the transaction includes performing a data dump of contents of the computer memory.

16. The medium of claim 15 , wherein the operations further comprise:

identifying the time period based on a distance between the first location address and the second location address; and

changing the distance between the respective location addresses at random or pseudo-random time intervals.

17. The medium of claim 16 , wherein the operations further comprise:

changing the distance between the location addresses for each of the two key elements, and a value for each of the location addresses continuously on a random basis; and

changing each distance and value within a time period that is less than the time du ration for performing the data dump of contents of the computer memory.

18. The medium of claim 17 , wherein the operations further comprise:

configuring a key monitor to test an entropy of the computer system which includes the computer memory before a paradigm for controlling the location of the at least one of the two key elements within the computer memory is accepted for use.

19. The medium of claim 14 , wherein the two key elements further include one or both of a key shuffle index mask and a memory location storing a changing memory location addresses.

20. The medium of claim 14 , wherein the two key elements comprise a key and a key mask, and operations further comprising storing a key shuffle index, a key shuffle index mask, and a memory location storing a changing memory.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 23, 2018
From: CHAN, MICHAEL J. T.; CHAMORRO, DEREK; BHAMIDIPATI, VENKATA SIVA VIJAYENDRA; LEBUMFACIL, GLENN G.; FORSYTHE, RALPH SCOTT
To: EBAY INC.
Reel/Frame 045019/0487 →
Continuity (1)
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