Title: Thresholding attack on the BSS-based cryptosystem which has binary key

Authors: Ali Sadr; Raziyeh Sadat Okhovat

Addresses: Electrical Engineering Department, Iran University of Science and Technology, Iran ' Electrical Engineering Department, Iran University of Science and Technology, Iran

Abstract: In this paper, it has been shown that the BSS-based cryptosystem with binary key which has only two values, does not provide the security goal. In fact, the private key can be fully realised by applying a proper threshold on the encrypted signal. Performance analysis in terms of normalised MSE shows that the original signal can be accurately extracted by the proposed procedure from the encrypted one. Therefore, a key with multiple values has been exploited to enhance the security of the cryptosystem.

Keywords: blind sources separation; BSS; cryptosystems; electronic security; binary key; thresholding attacks; cryptography.

DOI: 10.1504/IJESDF.2014.063087

International Journal of Electronic Security and Digital Forensics, 2014 Vol.6 No.2, pp.81 - 89

Received: 21 May 2013
Accepted: 24 Sep 2013
Published online: 30 Jul 2014 *

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