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相关概念视频

Woodward–Hoffmann Selection Rules and Microscopic Reversibility01:34

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Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
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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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The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
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The Reynolds transport theorem provides a framework to relate the time rate of change of an extensive property within a system to that in a control volume, which is crucial for analyzing fluid dynamics. Extensive properties, such as mass, velocity, acceleration, temperature, and momentum, can be expressed in terms of the mass of a fluid portion. These properties are called extensive because they depend on the system's size, while intensive properties are their corresponding values per unit...
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Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
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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:
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相关实验视频

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可撤销和启用雾的代理重新加密方案用于物联网环境.

Han-Yu Lin1, Pei-Ru Chen1

  • 1Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 202, Taiwan.

Sensors (Basel, Switzerland)
|October 16, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种基于雾的代理重新加密系统,用于物联网 (IoT) 中的安全数据共享. 它通过使用随时更新的密钥机制来增强安全性,消除了对传统用户撤销列表的需求.

关键词:
这就是为什么物联网是物联网物联网.雾计算 雾计算 雾计算代理代理代理代理代理代理代理代理代理代理代理重新加密的重新加密.撤销撤销撤销撤销撤销撤销撤销

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科学领域:

  • 计算机科学 计算机科学
  • 网络安全 网络安全
  • 云计算 云计算 云计算 云计算

背景情况:

  • 物联网 (IoT) 设备的使用越来越多,这引发了雾计算环境中数据传输的安全问题.
  • 对于安全的数据共享,现有的代理重新加密方法面临用户撤销和存储空间的挑战.
  • 在雾环境中,在多个设备之间传输数据会增加拦截和改的风险.

研究的目的:

  • 提出基于雾的代理重新加密系统,具有可撤销的身份,用于安全的云数据共享.
  • 解决传统用户撤销列表在管理解密权限方面的局限性.
  • 增强数据安全,减少物联网环境中的存储开销.

主要方法:

  • 引入了一个时间更新的密钥机制,用于管理用户解密权限.
  • 开发了一个基于雾的代理重新加密方案,避免了传统的用户撤销列表.
  • 正式证明了该方案的安全性,在决定双线的迪菲-赫尔曼 (DBDH) 假设下,针对自适应选择的身份和选择的纯文本攻击 (IND-PrID-CPA).

主要成果:

  • 拟议的方案允许在没有解密的情况下安全的云加密文本共享.
  • 被撤销的用户无法访问更新的时间更新密钥,防止未经授权的数据访问.
  • 该系统在选择身份和纯文本攻击 (IND-PrID-CPA) 时显示不可区分.

结论:

  • 新的时间更新密钥机制有效地在没有中央撤销列表的情况下撤销用户权限.
  • 与现有解决方案相比,拟议的基于雾的代理重新加密系统提供了增强的安全性和较低的计算复杂性.
  • 这种方法为物联网和雾计算环境中的数据共享提供了更有效和更安全的方法.