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相关概念视频

Principle of Equivalence01:18

Principle of Equivalence

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According to Albert Einstein (1897-1955), free-falling and feeling weightless are intrinsically linked. If a person were in free-fall under gravity, for example, diving towards the Earth from an airplane, they would feel completely weightless. Similarly, a person descending in a lift may feel partially weightless. Broadly speaking, it is assumed that an object in a uniform gravitational field and an object undergoing constant acceleration in the absence of gravity are under the same...
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Second Uniqueness Theorem01:16

Second Uniqueness Theorem

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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...
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Norton's Theorem01:14

Norton's Theorem

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Norton's theorem is a fundamental principle stating that a linear two-terminal circuit can be substituted with an equivalent circuit, which comprises a current source (ⅠN) in parallel with a resistor (RN). Here, ⅠN represents the short-circuit current flowing through the terminals, and RN stands for the input or equivalent resistance at the terminals when all independent sources are deactivated. This implies that the circuit illustrated in Figure (a) can be exchanged with the...
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Routh-Hurwitz Criterion II01:19

Routh-Hurwitz Criterion II

304
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...
304
Routh-Hurwitz Criterion I01:15

Routh-Hurwitz Criterion I

291
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...
291
Masking and Demasking Agents01:19

Masking and Demasking Agents

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EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
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相关实验视频

Updated: Jul 29, 2025

Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
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Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface

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基于属性可验证的有条件代理重新加密方案

Yongli Tang1, Minglu Jin1, Hui Meng1

  • 1College of Software, Henan Polytechnic University, Jiaozuo 454000, China.

Entropy (Basel, Switzerland)
|May 27, 2023
PubMed
概括
此摘要是机器生成的。

本研究引入了基于属性的可验证条件代理重新加密 (AB-VCPRE) 方案,以检测云计算中半诚实代理商的不可靠计算. 新方法通过验证重新加密的数据来确保安全的数据处理,增强代理责任.

关键词:
同型的签名同型的签名通过错误学习学习.代理重新加密代理重新加密重新加密可验证的可验证

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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相关实验视频

Last Updated: Jul 29, 2025

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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科学领域:

  • 云计算安全 云计算安全
  • 密码学 密码学 密码学 密码学
  • 数据 隐私 数据 隐私 数据

背景情况:

  • 云计算中的半诚实代理可能会执行不可靠的计算.
  • 现有的基于属性的条件代理重新加密 (AB-CPRE) 算法难以检测代理的不当行为.
  • 需要强大的机制来确保数据完整性和代理责任在云环境中.

研究的目的:

  • 提出一种基于属性的可验证条件代理重新加密 (AB-VCPRE) 方案.
  • 解决当前AB-CPRE算法的局限性,以检测代理的不当行为.
  • 提高云计算中数据处理的安全性和可靠性.

主要方法:

  • 开发一个包含同型签名的AB-VCPRE方案.
  • 验证服务器对重新加密的加密文本实施验证过程.
  • 在标准模型中进行安全分析,并根据错误学习 (LWE) 假设证明CPA安全性.

主要成果:

  • 拟议的AB-VCPRE计划有效地检测代理人的非法活动.
  • 该方案确保了稳定性,允许验证服务器确认正确的加密文本转换.
  • 在标准模型中验证了AB-VCPRE方案的可靠性和安全性.

结论:

  • 该AB-VCPRE方案提供了一个强大的解决方案,用于检测云环境中不可靠的代理计算.
  • 同型签名的整合提高了问责制和数据完整性.
  • 该方案提供可证明的安全保证,使其适用于敏感的云应用程序.