Authors: ShuJiang Xu XiuBo Chen XinXin Niu YiXian Yang
Publish Date: 2013/07/23
Volume: 56, Issue: 9, Pages: 1745-1754
Abstract
In this paper we first propose a hidden rule among the secure message the initial tensor product of two Bell states and the final tensor product when respectively applying local unitary transformations to the first particle of the two initial Bell states and then present a highefficiency quantum steganography protocol under the control of the hidden rule In the proposed quantum steganography scheme a hidden channel is established to transfer a secret message within any quantum secure direct communication QSDC scheme that is based on 2level quantum states and unitary transformations The secret message hiding/unhiding process is linked with the QSDC process only by unitary transformations To accurately describe the capacity of a steganography scheme a quantitative measure named embedding efficiency is introduced in this paper The performance analysis shows that the proposed steganography scheme achieves a high efficiency as well as a good imperceptibility Moreover it is shown that this scheme can resist all serious attacks including the interceptresend attack measurementresend attack auxiliary particle attack and even the Denial of Service attack To improve the efficiency of the proposed scheme the hidden rule is extended based on the tensor product of multiple Bell states
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