CT-ISG: Trustworthy Spectrum Sharing in Software Defined Radio Networks

项目摘要CT-ISG：软件无线电（Software Defined Radio，SDR）是一项革命性的技术，有望缓解频谱短缺问题，提高频谱利用效率。传统的无线电是使用ASIC（专用集成电路）技术构建的。对这些设备的更改需要高度的技术技能和专业设备，因此对于大多数对手来说，对设备的未经授权的更改是不可行的。SDR技术的出现带来了新的安全问题。攻击者很可能通过修改SDR的无线电软件来修改用户服务或重新配置SDR的RF参数。这引起了监管机构、运营商和用户对SDR系统安全漏洞的严重质疑。当前SDR研究和标准化工作的重点是基于密码系统的预防性安全措施。预防性安全措施是保护无线电软件下载过程的措施，或者是一旦下载软件就阻止篡改软件的方案。然而，最近的研究表明，不能排除恶意软件导致特别提款权操作不当的可能性。为了解决这一问题，在这个项目中，我们研究了当对手能够在SDR上安装恶意软件或修改已经安装的软件时构成最大威胁的安全问题，特别关注无法使用加密技术解决的威胁。具体而言，研究的重点是研究SDR网络的PHY和MAC层的安全漏洞。这项研究通过解决以前没有研究过的安全问题，满足了SDR研究界的迫切需要。预计该项目的研究成果将使参与SDR开发的监管机构、服务提供商和制造商受益。

Project AbstractCT-ISG: Trustworthy Spectrum Sharing in Software Defined Radio NetworksSoftware defined radio (SDR) is a revolutionary technology that promises to alleviate the spectrum shortage problem and bring about improvements in spectrum utilization efficiency. Conventional radios are built using ASIC (application specific integrated circuit) technology. Changes to such devices require highly technical skills and specialized equipment, thus making unauthorized changes to the devices infeasible for most adversaries. The emergence of SDR technology raises new security implications. It is quite possible for adversaries to modify user services or reconfigure RF parameters of an SDR by revising its radio software. This raises serious questions among regulators, operators, and users about the security vulnerabilities in SDR systems. The current focus of the SDR research and standardization efforts is on preventive security measures based on cryptosystems. Preventive security measures are measures that secure the radio software download process or schemes that thwart the tampering of the software once it has been downloaded. Recent studies, however, have shown that the possibility of inappropriate operation of SDRs due to malicious software cannot be precluded. To address this concern, in this project, we study security issues that pose the greatest threat when an adversary is able to install malicious software or modify already installed software on an SDR, with particular focus on threats that cannot be addressed using cryptographic techniques. Specifically, the focus of the research is on studying security vulnerabilities in the PHY and MAC layers of SDR networks. This research serves a critical need in the SDR research community by addressing security issues that have not been studied previously. It is expected that the research findings from this project will benefit regulators, service providers, and manufacturers involved in SDR development.