Secret-Key Generation: Information Theoretic Viewpoint and Application Perspectives

密钥生成：信息论观点和应用前景

• 批准号: 404840508
• 负责人: Nima Tavangaran
• 金额: --
• 依托单位: Department of Electrical and Computer Engineering
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/404840508?language=en
• 关键词: Secret; Key; Generation; Information; Theoretic

The main goal of this project is to address the physical layer security in the context of practical implementation conditions. In particular, we are interested in enhancing the classical secret-key generation models which are based on discrete memoryless sources into more practical settings. To this end, we will generalize four main application related aspects of these models and derive their secret-key capacities. The first generalization concerns the source uncertainty in which the probability distribution of the source is unknown. It is only assumed that the distribution belongs to an arbitrary known compound set. In this case, the secret-key generation protocol should guarantee security and reliability of the generated secret-key for all sources in the compound set. The second and third generalizations concern time continuity and source memory. Through these extensions, the participants can observe the source in a continuous time manner and each observation might be in general dependent on the previous ones. By means of the last generalization we allow also sources with continuous alphabets. These four extensions of the classical scenarios pave the way to study a very practically relevant model, i.e. secret-key generation using continuous time compound Gaussian sources with memory. In this regard, both single-input single-output and multiple-input multiple-output scenarios can be modeled and studied. These kind of generalizations are not yet intensively studied for secret-key models in literature to date. We believe that the expected results in this project will enrich the knowledge of information theoretic security with practical applications.

该项目的主要目标是在实际实施条件下解决物理层安全问题。特别是，我们有兴趣将基于离散无记忆源的经典密钥生成模型增强到更实用的设置中。为此，我们将概括这些模型的四个主要应用相关方面，并推导出它们的密钥容量。第一个推广涉及源的概率分布未知的源不确定性。它只是假设分布属于一个任意已知的复合集。在这种情况下，秘密密钥生成协议应该保证为复合集中的所有源生成的秘密密钥的安全性和可靠性。第二个和第三个概括涉及时间连续性和源记忆。通过这些扩展，参与者可以以连续时间的方式观察源，并且每个观察通常可能依赖于先前的观察。通过最后的推广，我们也允许连续字母的来源。经典场景的这四个扩展为研究一个非常实用的相关模型铺平了道路，即使用具有记忆的连续时间复合高斯源的密钥生成。在这方面，可以对单输入单输出和多输入多输出两种情况进行建模和研究。这些类型的推广尚未深入研究的秘密密钥模型在文献中的日期。我们相信，在这个项目中的预期结果将丰富的知识与实际应用的信息理论安全。