US 2026/0300087 A1 · DATA PROCESSING DEVICE, DATA PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM

Abstract

Provided is a data processing device that is provided at low cost without requiring large-scale hardware, and performs high-performance data error detection and correction, thereby enabling countermeasures against fault attacks. In a data processing device, one-hot representation data is adopted as the data to be written to a state register, and simple processing (e.g., bit AND operation processing) between the data in the duplicated state registers is performed, allowing error correction processing to be performed. This allows for low-cost implementation without requiring large-scale hardware, while also achieving high-performance data error correction processing. Furthermore, in the data processing device, since only simple processing (e.g., bit AND operations) is performed between the data in the duplicated state registers, high-speed processing can be achieved.

Claims9

Dependent claims

A data processing device for controlling data processing by transitioning between a finite number of defined states, comprising:

a first register capable of storing and retaining data;
a second register capable of storing and retaining data;
state obtaining circuitry including state obtaining processing circuitry that receives a state transition control signal, determines a next state to be transitioned to based on a current state and the state transition control signal, obtains one-hot representation data or one-cold representation data representing the determined state, the state obtaining circuitry transmitting the one-hot representation data or the one-cold representation data to the first register and the second register;
error processing circuitry that receives data stored in the first register as first data, and receives data stored in the second register as second data, the error processing circuitry including error correction processing circuitry that performs error correction processing based on the first data and the second data to obtain data after error correction processing.

1 more element

Dependencies are inferred from the claim text.

Data processing device, data processing method, and non-transitory computer readable storage medium

Life of this patent

Data processing device, data processing method, and non-transitory computer readable storage medium

Life of this patent

Abstract

Claims9