Creation of degraded wiretap channel through deliberate noise in block ciphered systems

Khiabani, Yahya S.; Wei, Shuangqing

doi:10.1109/glocomw.2011.6162585

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…As a result, the total number of 56 key bits examined in linear attack with bit advantage is . In [21], A. Selçuk showed that when the total number of gathered plaintext/ciphertext pairs is large enough, the probability of success , defined as the probability that the right key is among top candidates, can be derived as (1) where is the bit advantage of the attack, is the bias of the used linear approximation and is the cumulative distribution function of the standardized normal distribution.…”

Section: B Linear Cryptanalysismentioning

confidence: 99%

Enhancement of Secrecy of Block Ciphered Systems by Deliberate Noise

Khiabani

Wei

Yuan

et al. 2012

IEEE Trans.Inform.Forensic Secur.

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This paper considers the problem of end-to-end security enhancement by resorting to deliberate noise injected in ciphertexts. The main goal is to generate a degraded wiretap channel in the application layer over which Wyner-type secrecy encoding is invoked to deliver additional secure information. More specifically, we study secrecy enhancement of the Data Encryption Standard (DES) block cipher working in cipher feedback model (CFB) when adjustable noise is introduced into the encrypted data in an application layer. A verification strategy in the exhaustive search step of the linear attack is designed to allow Eve to mount a successful attack in the noisy environment. Thus, a controllable wiretap channel is created over multiple frames by taking advantage of errors in Eve's cryptanalysis, whose secrecy capacity is found for the case of known channel states at receivers. As a result, additional secure information can be delivered by performing Wyner type secrecy encoding over superframes ahead of encryption. These secrecy bits could be taken as symmetric keys for upcoming frames. Numerical results indicate that a sufficiently large secrecy rate can be achieved by selective noise addition.

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Section: B Linear Cryptanalysismentioning

confidence: 99%

Enhancement of Secrecy of Block Ciphered Systems by Deliberate Noise

Khiabani

Wei

Yuan

et al. 2012

IEEE Trans.Inform.Forensic Secur.

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“…This gives more insight on the security application of electronic commerce. Researchers began to consider replacing DES with AES (Daemen and Rijmen, 1998;Khiabani and Shuangqing, 2011) for a high security margin. However, in the most recent result about AES, Rijndael has been theoretical broken by Bogdanov et al (2011).…”

Section: Introductionmentioning

confidence: 99%

Research of Cryptographic Algorithms Applied in Electronic Commerce

Cheng¹,

Yanshou²

2014

RJASET

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With the developments of network communication, electronic commerce plays a more and more role in the trade business and industry structure. The requirement for the electronic commerce turns to be higher. In this study, we study current status about the cryptographic algorithms exploited in electronic commerce. We discuss the advantages and disadvantages about the symmetric and asymmetric algorithms and improve them. Then we give a new scheme that combines the improved symmetric algorithm and asymmetric algorithm. We give sound reasons to explain why our scheme is more secure. Finally, we carry the experiments to show the security of our scheme.

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“…This is almost never the case in wireless communications, where the signals received by the eavesdropper is always corrupted by interference/noise. In fact, recent works indicate that certain stream ciphers are less vulnerable to known attacks if the cipher text is corrupted by noise [3]. By comparison, the physical layer, i.e., information theoretic security, approach does take into account of the benefit of a noisy channel for secrecy [2].…”

Section: Introductionmentioning

confidence: 99%

The interference wiretap channel with an arbitrarily varying eavesdropper: Aligning interference with artificial noise

Yener

2012

2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton)

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Abstract-In this work, a Gaussian two-user MIMO interference channel is considered in the presence of an external eavesdropper whose channel is completely unknown to the legitimate communication parties and can be varying in an arbitrary fashion from one channel use to the next. We improve our recent result by deriving a larger achievable secrecy degrees of freedom region. In the achievable scheme, the transmitter injects artificial noise to confuse the eavesdropper, and at the same time aligns the injected noise with the interference from the other user at the intended receiver. The achieved secure degrees of freedom are shown to be closely connected to the rank of the effective channel matrix through which the eavesdropper observes the artificial noise. The precoding matrix is then designed to ensure that this rank cannot be reduced under any possible Eve's channel state.

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Creation of degraded wiretap channel through deliberate noise in block ciphered systems

Cited by 5 publications

References 14 publications

Enhancement of Secrecy of Block Ciphered Systems by Deliberate Noise

Enhancement of Secrecy of Block Ciphered Systems by Deliberate Noise

Research of Cryptographic Algorithms Applied in Electronic Commerce

The interference wiretap channel with an arbitrarily varying eavesdropper: Aligning interference with artificial noise

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