A Method of Detecting and Resisting Differential Fault Attacks

A differential fault attack and differential fault technology, applied in the field of information security, can solve the problem of ineffective infection protection scheme, and achieve the effect of small calculation amount

Active Publication Date: 2022-04-29
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This type of failure renders the infection prevention scheme ineffective and is called a double failure

Method used

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  • A Method of Detecting and Resisting Differential Fault Attacks
  • A Method of Detecting and Resisting Differential Fault Attacks
  • A Method of Detecting and Resisting Differential Fault Attacks

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Experimental program
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Embodiment

[0055] refer to figure 1 , the present invention is a method for detecting and defending against differential fault attacks, the method includes three parts:

[0056] (1) build redundancy; build a redundant encryption module according to the original encryption module;

[0057] (2) Double differential fault detection;

[0058] Based on the message authentication code method, detect whether there is fault injection in the redundant encryption module, and compare it with the original encryption module to detect whether there is fault injection in the original encryption module, and complete the detection of double differential fault attack or differential fault attack;

[0059] (3) Locating the fault source and protection;

[0060] After determining the existence of differential fault injection, detect each round of ciphertext differential value of the target algorithm based on the ciphertext differential value and the infection function, locate the source of the fault injecte...

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Abstract

The invention discloses a method for detecting and defending against differential fault attacks. The method first constructs a redundant encryption module according to the original encryption module; Compare and detect whether there is fault injection in the original encryption module, and complete the detection of double differential fault attack or differential fault attack; finally, after determining the existence of differential fault injection, detect each round of ciphertext differential value of the target algorithm based on the ciphertext differential value and infection function , locate the fault source injected by the attacker, and use random numbers and infection functions to hide the ciphertext differential value to achieve protection. The method of the invention can quickly determine the specific location of the differential fault injected by the attacker in the target algorithm, and uses random numbers and infection functions to protect the injected differential fault, so that the attacker cannot attack the differential fault.

Description

technical field [0001] The invention relates to the field of information security, in particular to a method for detecting and resisting differential fault attacks. Background technique [0002] Fault Attack (FA) enables the attacker to arbitrarily choose the value and location of the injected fault for the cryptographic device, which greatly reduces the amount of data required to obtain the key information, and the attacker can realize it in a shorter time its goal. Differential Fault Attack (Differential Fault Attack, DFA) is a very effective attack technique in FA, which mainly relies on maliciously injecting faults during the execution of the encryption device, and then launches by analyzing the difference between the fault output and the non-fault output. The relevant key information has the characteristics of flexible fault injection, high analysis efficiency, and low attack complexity. How to design an effective defense method to resist the threat of such attacks an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L9/40
CPCH04L9/004H04L63/1466H04L2463/146
Inventor 韦永壮张小娜武小年李灵琛张润莲
Owner GUILIN UNIV OF ELECTRONIC TECH
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