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相关概念视频

Bewley Lattice Diagram01:12

Bewley Lattice Diagram

562
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
562
Castigliano's Theorem01:18

Castigliano's Theorem

369
Castigliano's theorem analyzes displacements and rotations in elastic structures. It relates the derivative of elastic strain energy to the applied forces or moments, allowing for the calculation of deformations. The theorem states that the partial derivative of the total strain energy of a system with respect to a specific load results in the displacement at the point where the load is applied. This principle applies to both forces and moments.
369
Castigliano's Theorem: Problem Solving01:14

Castigliano's Theorem: Problem Solving

601
The deflection of a simply supported beam that carries a central point load can be analyzed using structural mechanics principles, particularly by applying Castigliano's theorem. This theorem relates the displacement at the load application point to the partial derivatives of the strain energy in the structure. The simply supported beam with a point load at its center has symmetric reaction forces at the supports, each bearing half of the load. The bending moment at any point along the beam...
601
Routh-Hurwitz Criterion II01:19

Routh-Hurwitz Criterion II

201
In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
201
Second Uniqueness Theorem01:16

Second Uniqueness Theorem

984
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
984
Routh-Hurwitz Criterion I01:15

Routh-Hurwitz Criterion I

188
Consider an electrical power grid, where stability is essential to prevent blackouts. The Routh-Hurwitz criterion is a valuable tool for assessing system stability under varying load conditions or faults. By analyzing the closed-loop transfer function, the Routh-Hurwitz criterion helps determine whether the system remains stable.
To apply the Routh-Hurwitz criterion, a Routh table is constructed. The table's rows are labeled with powers of the complex frequency variable s, starting from the...
188

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相关实验视频

Updated: Jun 12, 2025

Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
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使用Lenstra-Lenstra-Lovász算法-密码文本策略的分布式身份认证:基于错误问题环学习的高效方法

Qi Yuan1, Hao Yuan1, Jing Zhao1

  • 1Faculty of Communication and Electronic Engineering, Qiqihar University, Qiqihar 161000, China.

Entropy (Basel, Switzerland)
|September 27, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种使用基于格子的加密的量子抗性属性基于加密 (ABE) 方案. 改进的方法通过优化随机值生成和减少计算开销来提高安全性和效率.

关键词:
伦斯特拉LenstraLovász格子缩小算法政策属性的加密政策属性.身份验证身份验证身份验证格子密码学 格子密码学

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科学领域:

  • 密码学 密码学 密码学 密码学
  • 量子计算安全 量子计算安全

背景情况:

  • 传统的基于属性的加密 (ABE) 在量子时代面临挑战.
  • 单一权威的ABE系统有一个单一的故障点.
  • 量子计算需要开发抗量子密码解决方案.

研究的目的:

  • 提出一个改进的基于格子的,抗量子身份认证和政策属性加密方案.
  • 为了解决传统ABE中的单点故障问题.
  • 在量子领域提高ABE的效率和安全性.

主要方法:

  • 使用调整的高斯取样参数优化随机值生成.
  • 在密钥生成过程中,基于共享性质的高效属性处理.
  • 应用Lenstra-Lenstra-Lovász (LLL) 格子缩小算法进行解密.

主要成果:

  • 通过优化随机值生成提高性能.
  • 减少授权机构的计算开销.
  • 通过LLL算法对线性空间检查的解密降低了计算成本.
  • 与现有方案相比,提高了安全性和效率.

结论:

  • 拟议的基于格子的ABE方案提供了一个可行的量子抗性解决方案.
  • 随机值生成和属性处理中的优化提高了整体系统性能.
  • 整合LLL算法大大降低了解密计算成本,提高了实际适用性.