Beyond the Csiszár-Korner Bound: Best-Possible Wiretap Coding via Obfuscation

Ishai, Yuval; Korb, Alexis; Lou, Paul; Sahai, Amit

doi:10.1007/978-3-031-15979-4_20

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…More accurately modeling Eve and analyzing Eve's attack capabilities is crucial. (3) Currently, computationally secure coding is not yet practical Ishai et al (2022Ishai et al ( , 2023. Therefore, our scheme utilizes information-theoretically secure coding to exploit entropy, which inherently incurs entropy loss.…”

Section: Discussionmentioning

confidence: 99%

“…As of the year 2022, existing wire-tap coding schemes are generally information-theoretically secure. In Ishai et al (2022) proposed a wire-tap coding scheme achieving computational security based on Ideal Obfuscation in the Oracle model. However, this scheme is merely a theoretical construction and lacks practical applicability.…”

Section: Related Workmentioning

confidence: 99%

“…However, this scheme is merely a theoretical construction and lacks practical applicability. In Ishai et al (2023) further developed a wire-tap coding scheme achieving computational security based on Indistinguishability Obfuscation in the plain model. Nevertheless, the practical usability of the scheme remains a challenge.…”

Section: Related Workmentioning

confidence: 99%

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Polar code-based secure transmission with higher message rate combining channel entropy and computational entropy

An,

Huang,

et al. 2024

Cybersecurity

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The existing physical layer security schemes, which are based on the key generation model and the wire-tap channel model, achieve security by utilizing channel reciprocity entropy and noise entropy, respectively. In contrast, we propose a novel secure transmission framework that combines noise entropy with reciprocity entropy, achieved by inserting reciprocity entropy into the frozen bits of polar codes. Note that in real-world scenarios, when eavesdroppers employ polynomial-time attacks, the bit error rate (BER) increases due to the introduction of computational entropy. To achieve indistinguishability security, we convert the practical physical layer security metric, BER, into the average min-entropy, a widely accepted concept in cryptography. The simulation results demonstrate that the eavesdropper’s BER can be significantly increased without compromising the communication performance of the legitimate receiver. Under concrete parameters we selected, when compared to the joint scheme of physical layer key generation and one time pad, the modular semantically-secure scheme based on the wire-tap channel model, and the simple channel entropy combination scheme, our scheme achieves a message rate approximately 1.2 times, 3.8 times, and 1.4 times better, respectively. Experimental testing validates the feasibility of our scheme.

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Section: Discussionmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%