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相关概念视频

Multimachine Stability01:25

Multimachine Stability

163
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
163
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

88
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
88
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

195
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
195

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相关实验视频

Updated: Jul 6, 2025

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods
10:40

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Published on: December 21, 2019

26.0K

分布式电源分析攻击SM4加密芯片

Haoran Gong1, Tailiang Ju2

  • 1UESTC, No. 2006 Xiyuan Avenue, Chengdu, 611730, Sichuan, China.

Scientific reports
|January 10, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了对加密芯片的分布式能量分析攻击,大大减少了破解时间并提高了准确性. 这种新的方法增强了SM4和AES算法的安全分析,以防止电力消耗侧通道攻击.

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Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography
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10:40

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Published on: December 21, 2019

26.0K
Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

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Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography
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科学领域:

  • 电气工程 电气工程
  • 计算机科学 计算机科学
  • 密码学 密码学 密码学 密码学

背景情况:

  • 加密芯片对于数据安全至关重要,它利用了像中国SM4和国际AES这样的算法.
  • 功耗侧通道攻击,包括差异功率分析 (DPA) 和机器学习,是普遍存在的威胁.
  • 现有的方法在钥匙恢复的准确性和效率方面存在局限性.

研究的目的:

  • 介绍一种基于相关性功率分析 (CPA) 的新型分布式能源分析攻击.
  • 提高对加密芯片加密分析的效率和准确性.
  • 为了减少用于钥匙恢复所需的计算资源和时间.

主要方法:

  • 一种使用关联功率分析 (CPA) 的分布式能源分析攻击方法.
  • 将功耗数据划分为16个子集,每个子集对应8个关键字节.
  • 单独训练每个子集,并将数据维度降低到100.

主要成果:

  • 实现了76%的破解时间减少和3%的精度提高.
  • 一个256分类模型直接破解128位密码,成功率为28%,仅使用1个电源跟踪.
  • 对SM4和AES加密标准的有效性已被证明.

结论:

  • 分布式能量分析攻击为加密分析提供了一种更有效,更准确的方法.
  • 这种方法改善了对加密芯片的安全评估,以防止侧通道攻击.
  • 进一步的研究可以探索实时加密分析和更广泛的算法应用的优化.