Secret Key Agreement from Correlated Gaussian Sources by Rate Limited Public Communication

Watanabe, Shun; Oohama, Yasutada

doi:10.1587/transfun.e93.a.1976

Cited by 41 publications

(72 citation statements)

References 28 publications

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“…These types of attacks are known as side channel attacks [88]. They are performed by observing the electromagnetic radiations, power consumption, or the timing behavior of an embedded device.…”

Section: Physical Layer Key Generation Schemesmentioning

confidence: 99%

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Lightweight Cryptographic Techniques for Automotive Cybersecurity

Jadoon

Wang

et al. 2018

Wireless Communications and Mobile Computing

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A new integration of wireless communication technologies into the automobile industry has instigated a momentous research interest in the field of Vehicular Ad Hoc Network (VANET) security. Intelligent Transportation Systems (ITS) are set up, aiming to offer promising applications for efficient and safe communication for future automotive technology. Vehicular networks are unique in terms of characteristics, challenges, architecture, and applications. Consequently, security requirements related to vehicular networks are more complex as compared to mobile networks and conventional wireless networks. This article presents a survey about developments in vehicular networks from the perspective of lightweight cryptographic protocols and privacy preserving algorithms. Unique characteristics of vehicular networks are presented which make the embedded security applications computationally hard as well as memory constrained. The current study also deals with the fundamental security requirements, essential for vehicular communication. Furthermore, awareness of security threats and their cryptographic solutions in terms of future automotive industry are discussed. In addition, asymmetric, symmetric, and lightweight cryptographic solutions are summarized. These strategies can be enhanced or incorporated all in all to meet the security perquisites of future cars security.

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Section: Physical Layer Key Generation Schemesmentioning

confidence: 99%

“…Physical layer key generation scheme has gained significant attention in recent years due to its lightweight and information theoretic security features [88,[91][92][93][94][95][96][97][98][99].…”

Section: Physical Layer Key Generation Schemesmentioning

confidence: 99%

Lightweight Cryptographic Techniques for Automotive Cybersecurity

Jadoon

Wang

et al. 2018

Wireless Communications and Mobile Computing

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“…It is shown in [5][6] that the secret key rate is limited by the public channel capacity for Gaussian sources. The upper bound can be achieved only when the communication rate is unlimited.…”

Section: System Modelmentioning

confidence: 99%

Secret key generation from multiple cooperative helpers by rate unlimited public communication

Yang

Wang

Yin

2014

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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This paper investigates the secret key generation from multiple cooperative sources. We assume that the public communication between the legitimate users has unlimited capacity. In this case, the secret key rate is the upper bound of a practical system with limited public communication. The random signals from the multiple helpers can help to create correlated Gaussian sources for the legitimate users to generate secret key, and only local channel state information (CSI) is needed by the helpers to cooperate with others. The power allocation between the helpers is studied with a total transmit power constraint, which results in a non-convex optimization problem. A high efficiency sub-optimal solution is proposed. And even when the legitimate users have no idea about the eavesdropper, the scheme still can help the system to achieve fairly good performance.

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“…Proof: Given signal vectors and at nodes and , respectively, let be the size of the secret key per signal sample that can be generated under the constraint that is the maximum number of bits that can be exchanged per signal sample between nodes and . Using [28] and [29], 7 for large , and are related as follows:…”

Section: : Best Lower Boundmentioning

confidence: 99%

“…The ratio in (27) can be computed as follows. Lemma 4: For the general quantization scheme as given in (16), expression (27) can be evaluated as follows: (28) where is given as…”

Section: Active Adversary With Channel Estimationmentioning

confidence: 99%

Limitations of Generating a Secret Key Using Wireless Fading Under Active Adversary

Zafer

Agrawal

Srivatsa

2012

IEEE/ACM Trans. Networking

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Recently, many research studies have explored the use of wireless fading to generate an information-theoretic shared secret key over an open wireless channel. While this line of research is now mature enough to be built into demonstrative working systems for scenarios involving a (limited) passive/eavesdropping adversary model, the case of an active (jamming) adversary has not been sufficiently studied. Under an active adversary, information-bits that need to be exchanged during the process of key setup will not only be subject to eavesdropping, but also message disruptions that could lead to a high communication cost per bit of secret key generated. Measuring efficiency of key exchange as the ratio of communication cost to the size of secret key generated, in this paper, we address the following question: Is generating a secret key by exploiting wireless fading an efficient process? We obtain analytical results that quantify the minimum number of information-bits that must be exchanged to obtain one bit of shared secret key and show that this number rapidly increases with an active adversary's signal power. Thus, through our analysis, we conclude that the effectiveness of generating a secret key from wireless fading is limited when considering active adversaries.

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Secret Key Agreement from Correlated Gaussian Sources by Rate Limited Public Communication

Cited by 41 publications

References 28 publications

Lightweight Cryptographic Techniques for Automotive Cybersecurity

Lightweight Cryptographic Techniques for Automotive Cybersecurity

Secret key generation from multiple cooperative helpers by rate unlimited public communication

Limitations of Generating a Secret Key Using Wireless Fading Under Active Adversary

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