公开(公告)号：US20230074623A1

公开(公告)日：2023-03-09

申请号：US17466363

申请日：2021-09-03

Applicant: Arm Limited

Inventor： Shashank Guruprasad ,  Roma Rudra ,  Abhishek Tripathi

IPC: G06F21/75 ,  G06F21/57

Abstract: Various implementations described herein are directed to a device with a reset tree having leaf buffers that provide sensed output signals based on a reset-synchronizing input signal. The device may have a first sensor that receives the sensed output signals from the leaf buffers of the reset tree and provides an attack detection signal based on sensing a malicious attack. The device may have a second sensor that receives the reset-synchronizing input signal, receives the attack detection signal from the first sensor and provides a reset alarm signal based on duration of a timing glitch associated with comparing a difference between the reset-synchronizing input signal and the attack detection signal.

公开(公告)号：US11809609B2

公开(公告)日：2023-11-07

申请号：US17466363

申请日：2021-09-03

Applicant: Arm Limited

Inventor： Shashank Guruprasad ,  Roma Rudra ,  Abhishek Tripathi

IPC: G06F21/75 ,  G06F21/57

CPC classification number: G06F21/755 ,  G06F21/57

Abstract: Various implementations described herein are directed to a device with a reset tree having leaf buffers that provide sensed output signals based on a reset-synchronizing input signal. The device may have a first sensor that receives the sensed output signals from the leaf buffers of the reset tree and provides an attack detection signal based on sensing a malicious attack. The device may have a second sensor that receives the reset-synchronizing input signal, receives the attack detection signal from the first sensor and provides a reset alarm signal based on duration of a timing glitch associated with comparing a difference between the reset-synchronizing input signal and the attack detection signal.