An SPN type block password fault attack resistance capability assessment method and device

A block cipher and fault attack technology, applied in the field of information security, can solve the problems of many fault injection times, unpredictable attack times, unfavorable fault analysis, etc., and achieve the effect of practical and rapid analysis

Active Publication Date: 2019-05-31
BEIJING UNIV OF POSTS & TELECOMM +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, many methods for evaluating the security of block ciphers have been proposed. During the evaluation process, the attack methods adopted are impossible differential attack or algebraic failure attack, but the main problem of these methods is the complexity of data However, there are still many deficiencies in the optimization selection of degree and search path, such as a large amount of calculation and many times of fault injection, and the proposed mathematical models such as single-bit model and double-bit model do not actually consider the possibility of faults in the actual injection process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An SPN type block password fault attack resistance capability assessment method and device
  • An SPN type block password fault attack resistance capability assessment method and device
  • An SPN type block password fault attack resistance capability assessment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0026] figure 1 A schematic diagram of the SPN type block cipher anti-fault attack capability evaluation method provided by the embodiment of the present invention, such as figure 1 As shown, the embodiment of the present invention provides a method for evaluating the anti-fault attack capability of an SPN block cipher, and its execution s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The embodiment of the invention provides an evaluation method and device for fault attack resistance of an SPN type block password. The method comprises the steps that ciphertext difference of the SPNtype block password is acquired; according to the ciphertext difference, a impossible fault difference path is utilized to obtain a residual secret key space; according to the inverse algebraic difference equation, the number of remaining secret keys is obtained; and inputting the number of the remaining secret keys into a preset algorithm model, and outputting a final attack frequency so as to evaluate the fault attack resistance of the SPN type block password according to the final attack frequency. The embodiment of the invention provides a method and a device for evaluating the fault attack resistance of an SPN type block password,SPN type block passwords can be quickly analyzed by combining impossible fault differential attacks and algebraic fault differential analysis; and through the method, redundant faults generated by disturbance in the laser injection process can be effectively simulated, the attack frequency can be effectively and accurately predicted, and the fault attackresistance of the block password can be more practically and quickly analyzed.

Description

technical field [0001] The embodiments of the present invention relate to the field of information security technology, and in particular to a method and device for evaluating the anti-fault attack capability of an SPN block cipher. Background technique [0002] Block ciphers are currently widely used encryption algorithms, which can be divided into Feistel-type and SPN-type block ciphers from their structure, and are widely used in encryption chips. Nowadays, mobile payment, RFID tags, WSN nodes, etc. are all equipped with key chips to prevent information leakage. However, with the introduction of fault attack methods, especially channel measurement attacks, the chip can be quickly cracked through laser probes, electromagnetic pulse interference, etc. key. The side-channel attack is an attack method that obtains the encrypted key information by reading the fault error information after the actual fault injection of the chip, and obtaining the encrypted key information thro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L9/06H04L29/06
Inventor 董亮张洪欣朱磊孙绍飞甘罕李强崔晓彤
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products