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SWIFT: SMALL: Exploiting Co-Existence for Verifiable Everlasting Security in Wireless Communication Systems: Hardware and Protocols

SWIFT：SMALL：利用共存实现无线通信系统中可验证的永久安全性：硬件和协议

基本信息

批准号：
2029323
负责人：
Dennis Goeckel
金额：
$ 45万
依托单位：
University of Massachusetts Amherst
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-15 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029323&HistoricalAwards=false
关键词：
SWIFT SMALL Exploiting Co Existence

项目摘要

The crowded radio spectrum has motivated significant interest in using spectrum more efficiently by operating radar systems and wireless communication systems in the same frequency band. Traditionally such coexistence is viewed as neutral or detrimental to both systems, but this view is evolving, particularly if there is information sharing between the systems. This project exploits a coexisting radar to solve a longstanding problem in communications: protecting the message contents in wireless communication systems, such as cellular phones, WiFi systems, and public safety radios. The standard approach is to encode the message based on a cryptographic key, which is shared by the message sender and intended recipient but unknown to the adversary; the intended recipient can readily decode the message, but the adversary is faced with an intractable computational task. However, the potential for an adversary to record the encoded message and then work to decode the message in the future using either computational advances or after obtaining the key means cryptographic approaches are insufficient if the goal is everlasting security. This project will perform experimental validation and refinement of a technique for everlasting security that exploits the strength of two different approaches for security, as described below, to exploit the coexisting radar signal to block the adversary's receiver from making a recording of a wireless communications signal from which the message content can ever be extracted. The experimental thrust of the project will also serve as fertile ground for project-based enhancement of the education of a diverse set of students.The proposed technique combines classical cryptographic techniques with contemporary information-theoretic security techniques. Information-theoretic security approaches protect the message content forever if the proper conditions are present at the time of message transmission; however, trying to guarantee such conditions is challenging, particularly in the wireless communications environment, and hence information-theoretic techniques have seen limited penetration in practical systems. This project will employ a coexisting radar to provide everlasting security, as follows. The communicating parties and operator of the radar system set up a cryptographic key, which is then employed to provide the required advantage in radar interference cancellation for the intended recipient over the adversary to establish information-theoretic secure communications. Even if the key is compromised immediately after message transmission, the adversary will not have been able to store a version of the signal from which the message can ever be extracted, hence providing everlasting security. The advantage is obtained from the intended recipient employing the key for receiver front-end adaptation to reduce the dynamic range of the received signal. However, such an adaptation can be challenging and has been considered only through simple models in the studies of the proposed technique to this point. Buoyed by full-duplex communication approaches that have emerged over the last few years and demonstrate interference cancellation over a wide frequency band, this project addresses the challenging hardware implementation of this technique jointly with the refinement of the modeling and protocols so as to yield a robust form of everlasting security.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

拥挤的无线电频谱已经激发了通过在相同频带中操作雷达系统和无线通信系统来更有效地使用频谱的显著兴趣。传统上，这种共存被视为对两个系统是中性的或有害的，但这种观点正在演变，特别是在系统之间共享信息的情况下。该项目利用共存的雷达来解决通信中的一个长期问题：保护无线通信系统中的消息内容，如蜂窝电话，WiFi系统和公共安全无线电。标准的方法是基于加密密钥对消息进行编码，该加密密钥由消息发送者和预期接收者共享，但对手不知道;预期接收者可以很容易地解码消息，但对手面临着棘手的计算任务。然而，如果目标是永久安全，那么对手记录编码消息然后在未来使用计算进步或在获得密钥手段后解码消息的可能性是不够的。该项目将进行实验验证和完善的技术，利用两种不同的安全方法的强度，如下所述，利用共存的雷达信号来阻止对手的接收器记录无线通信信号，从中提取消息内容。该项目的实验推力也将作为肥沃的土壤，以项目为基础的增强教育的一个多元化的students.The建议的技术结合了经典的密码技术与当代信息理论的安全技术。信息理论安全方法永远保护消息内容，如果在消息传输时存在适当的条件;然而，试图保证这样的条件是具有挑战性的，特别是在无线通信环境中，因此信息理论技术在实际系统中的渗透有限。该项目将采用一个共存的雷达，以提供永久的安全，如下。雷达系统的通信方和操作员设置密码密钥，然后使用该密码密钥来为目标接收方提供雷达干扰消除方面所需的优势，以建立信息理论上的安全通信。即使密钥在消息传输后立即泄露，对手也无法存储可以从中提取消息的信号版本，从而提供永久的安全性。该优点是从预期接收方获得的，该接收方采用用于接收机前端适配的密钥来减小接收信号的动态范围。然而，这样的适应可能是具有挑战性的，并已被认为只有通过简单的模型在研究中提出的技术到这一点。在过去几年出现的全双工通信方法的推动下，这个项目解决了这种技术的具有挑战性的硬件实现问题，同时也解决了模型和协议的改进问题，以便产生一种持久安全的健壮形式。这个奖项反映了美国国家科学基金会的法定使命，并且通过使用基金会的学术价值和更广泛的影响审查标准。