How to Test the Randomness From the Wireless Channel for Security?

Qu, Zhe; Zhao, Shangqing; Xu, Jie; Lu, Zhuo; Liu, Yao

doi:10.1109/tifs.2021.3092051

Cited by 5 publications

(7 citation statements)

References 45 publications

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“…Since the measurements from the wireless channel are correlated in time, the initial key generated from the measurements are also statistically correlated. Using this statistical correlation, Eve can effectively increase the probability of a successful attack [19]. In addition, the statistical correlation will be used to calculate the probability of the key passing the randomness test in Section 4.4.…”

Section: Calculation Of Statistical Correlation Of the Initial Keymentioning

confidence: 99%

“…Since the search is for the initial key, Eve's successful attack requires that the correct initial key is searched and that the key passes the randomness test. First, we introduce the probability of the generated key passing frequency test in RT [19], which is given as…”

Section: The Attack Success Probability Of Ecswomentioning

confidence: 99%

“…where α is the P-value threshold in RT, and other modules in RT are defined in [19] Appendix C. Then, given the fact that RT has been passed, we calculate the attack success probability of ECSwo. Since Eve does not know Alice's CSI, she cannot know the correlation coefficient ρ 2 exactly.…”

Section: The Attack Success Probability Of Ecswomentioning

confidence: 99%

“…(2) The security loss: The SL describes the loss of security during key generation [19]. The SL is calculated as…”

Section: Metricsmentioning

confidence: 99%

“…To evaluate the security of the OTP, a robust adversary model needs to be designed. Some studies [17,19] assume that Eve has a powerful yet finite computational capability and uses the incomplete randomness of the channel to search for keys. Some studies [20][21][22][23] assume that Eve can get the CSI correlated with the legitimate channel.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Powerful Adversary Model and Corresponding Time OTP Slot Allocation Scheme in RIS-Assisted Physical Layer Key Generation

Chen,

Song,

et al. 2024

Preprint

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Physical layer key generation (PLKG) is a technique of information-theoretic security to tackle the problem of key distribution between resource-constrained legitimate users and is a promising candidate for the one time pad (OTP) technique. However, in quasi-static, the key rate is greatly limited due to low entropy. Reconfigurable intelligent surface (RIS) is introduced to adaptively reconfigure the radio environment. However, how to allocate time slots in the OTP to counter the increasingly powerful adversary model is an urgent problem to be solved. In this paper, we propose a very powerful adversary model and give an attack strategy called eavesdropping channel search, which allows Eve to use its search and eavesdropping capabilities to maximize the probability of successful attacks. Meanwhile, we propose a time slot allocation algorithm in the OTP to ensure the security of the key. Simulations validate that our proposed attack strategy is more powerful than any existing adversary model and our proposed time slot allocation algorithm does not have any security loss.

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Section: Calculation Of Statistical Correlation Of the Initial Keymentioning

confidence: 99%

Section: The Attack Success Probability Of Ecswomentioning

confidence: 99%

Section: The Attack Success Probability Of Ecswomentioning

confidence: 99%

“…(2) The security loss: The SL describes the loss of security during key generation [19]. The SL is calculated as…”

Section: Metricsmentioning

confidence: 99%