INFORMATION PROCESSING APPARATUS AND METHOD, AND PROGRAM

• US 20150007323A1
• Filed: 09/19/2014
• Published: 01/01/2015
• Est. Priority Date: 03/28/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: YOSHIMI, HIDEO
• Granted Patent: US 9,514,302 B2
• Time in Patent Office: Days
• US Class Current: 726/23
• CPC Class Codes: G06F 21/554 involving event detection and direct action
• CPC Class Codes: G06F 21/72 in cryptographic circuits

Abstract

An information processing apparatus including: an attack detection unit that detects an attack; and a strength adjustment unit that incrementally raises the strength of a security measure every time that an attack is detected by the attack detection unit.

Claims

1. An information processing apparatus comprising:

one or more processors operable to;

detect an attack based on at least a change in performance of the information processing apparatus; and

adjust a strength of a security measure by incrementally raising the strength of the security measure each time an attack is detected.

2. The information processing apparatus according to claim 1, wherein the one or more processors are operable to adjust the strength of the security measure by incrementally lowering the strength of the security measure each time a predetermined condition is satisfied.

3. The information processing apparatus according to claim 2, wherein the predetermined condition is a condition that a predetermined amount of time has passed since detection of the attack.

4. The information processing apparatus according to claim 3, wherein the one or more processors are operable to:

charge a capacitor after the detection of the attack;

compare a charge amount of the capacitor being discharged and a predetermined threshold value, wherein the predetermined amount of time is a discharging time of the capacitor until the charge amount reaches the predetermined threshold value.

5. The information processing apparatus according to claim 2, wherein the predetermined condition is a condition that execution of a regulation process has been successful.

6. The information processing apparatus according to claim 1, wherein the strength of the security measure is raised using one or more of:

an increase in a number of recalculations of important processes, an increase in an insertion amount of a timing jitter, an insertion of dummy calculation, an increase in an amount of time taken until returning to a normal mode, or an increase in a number of successful regulating processes.

7. The information processing apparatus according to claim 1, wherein the one or more processors are operable to set a function by which the attack has been detected as a target for raising the strength of the security measure.

8. An information processing apparatus comprising:

an attack detection unit configured to detect an attack based on at least a change in performance of the information processing apparatus; and

a strength adjustment unit configured to adjust a strength of a security measure by incrementally raising the strength of the security measure each time an attack is detected.

9. The information processing apparatus according to claim 8, wherein the strength adjustment unit is configured to adjust the strength of the security measure by incrementally lowering the strength of the security measure each time a predetermined condition is satisfied

10. The information processing apparatus according to claim 9, wherein the predetermined condition is a condition that a predetermined amount of time has passed since detection of the attack.

11. The information processing apparatus according to claim 10, further comprising:

a charging and discharging unit configured to charge a capacitor after the detection of the attack;

a charge amount detection unit configured to compare a charge amount of the capacitor being discharged and a predetermined threshold value, wherein the predetermined amount of time is a discharging time of the capacitor until the charge amount reaches the predetermined threshold value.

12. The information processing apparatus according to claim 9, wherein the predetermined condition is a condition that execution of a regulation process has been successful.

13. The information processing apparatus according to claim 8, wherein the strength of the security measure is raised using one or more of:

an increase in a number of recalculations of important processes, an increase in an insertion amount of a timing jitter, an insertion of dummy calculation, an increase in an amount of time taken until returning to a normal mode, or an increase in a number of successful regulating processes.

14. The information processing apparatus according to claim 8, wherein the strength adjustment unit is configured to set a function by which the attack has been detected as a target for raising the strength of the security measure.

15. The information processing apparatus according to claim 14, wherein the strength adjustment unit increases values of security parameters of the function in response to detecting an attack on the function.