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arXiv 1102.1475cs.ITmath.IT
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安全嵌入代码

Security Embedding Codes

Hung D. Ly, Tie Liu, Yufei Blankenship

摘要:

本文考虑了同时向合法接收者发送两个消息,一个高安全性消息和一个低安全性消息的问题,称为安全嵌入问题。一个信息理论制定的问题。一个编码方案,结合率分割,叠加编码,嵌套分仓和信道前缀被认为是实现在几种情况下的信道的保密容量区域。将这些结果应用于标量和独立的并行高斯信道(在平均单个子信道功率约束下),结果表明,高安全性消息可以以全速率嵌入到低安全性消息中(就好像低安全性消息不存在一样),而不会对通信的总体速率造成任何损失(就好像两个消息都是低安全性消息一样)。Ozarow和Wyner的窃听通道II设置的扩展也被认为是,它示出了“完美”的安全嵌入可以通过使用两级陪集代码的编码器来实现。

英文摘要:

This paper considers the problem of simultaneously communicating two messages, a high-security message and a low-security message, to a legitimate receiver, referred to as the security embedding problem. An information-theoretic formulation of the problem is presented. A coding scheme that combines rate splitting, superposition coding, nested binning and channel prefixing is considered and is shown to achieve the secrecy capacity region of the channel in several scenarios. Specifying these results to both scalar and independent parallel Gaussian channels (under an average individual per-subchannel power constraint), it is shown that the high-security message can be embedded into the low-security message at full rate (as if the low-security message does not exist) without incurring any loss on the overall rate of communication (as if both messages are low-security messages). Extensions to the wiretap channel II setting of Ozarow and Wyner are also considered, where it is shown that "perfect" security embedding can be achieved by an encoder that uses a two-level coset code.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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