Power supply isolation device and isolation method for preventing side channel attack
By controlling the power supply isolation and clock gating modules, the side-channel attack path is cut off, solving the problems of increased power consumption and identifiable disturbance patterns in existing technologies, and achieving hardware-level security improvements.
CN120675697AActive Publication Date: 2025-09-19GUANGDONG LEAPFIVE TECH CO LTD
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Patent Information
- Application Number
- CN202511190387.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2045-08-25
AI Technical Summary
Technical Problem
When preventing side-channel attacks, existing technologies have limitations such as increased power consumption and identifiable disturbance patterns, and are unable to effectively isolate the paths of side-channel attacks.
Method used
By isolating the power supply and chip circuits and utilizing the control of the energy storage module and clock gating module, side channel leakage paths such as power consumption, electromagnetic and timing are cut off to achieve hardware-level protection.
Benefits of technology
Significantly improves the security and anti-analysis capabilities of protected circuits, prevents side-channel attacks, and avoids leakage of current, power consumption, and timing information.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a power supply isolation device and isolation method for preventing side channel attacks, the power supply isolation device comprises a first energy storage module, a first switch module, a clock gating module and a control module, the control module outputs control signals to the first switch module and the clock gating module respectively, so that the clock gating module is switched on and switched off when an external power supply supplies power. The control module is used for controlling the clock gating module to stop outputting the working clock signal under the condition that the external power supply stops supplying power and controlling the clock gating module to output the working clock signal under the condition that the external power supply stops supplying power; according to the technical scheme, by controlling power supply switching of the external power supply and the energy storage module and synchronously controlling starting and stopping of the clock signal, the protected circuit only runs in the state that the protected circuit is isolated from the external power supply and powered by the energy storage module, so that side channel leakage paths of the power supply, current, power consumption, electromagnetism, time sequence and the like are effectively cut off; hardware-level protection against side channel attacks is achieved, and the safety and the anti-analysis capability of a protected circuit are remarkably improved.
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