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arXiv 1504.04494cs.ITmath.IT
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完全安全的索引编码

Perfectly Secure Index Coding

Mohammad Mahdi Mojahedian, Mohammad Reza Aref, Amin Gohari

摘要:

在本文中,我们研究了存在窃听者的索引编码问题。消息将从一个发送器发送到多个合法的接收器,这些接收器具有关于消息的边信息,并与发送器共享一组密钥。我们假设完全保密,这意味着窃听者不应该能够检索到有关消息集的任何信息。研究了零错误且完全安全的索引编码问题的最小密钥长度。一方面,这个问题是索引编码问题的推广(因此是一个困难的问题)。另一方面,它是香农密码体制的推广。我们表明,香农的一次垫策略的推广是最佳的乘法常数,这意味着它获得了整个边界的圆锥体形成的安全率区域从原点看。最后,我们考虑放松完美的保密性和零错误的限制,弱保密性和渐近消失的错误概率,并提供了一个安全的版本的结果,由Langberg和Effros,在传统的索引编码问题的零错误和$ε$ -错误区域的等价性。

英文摘要:

In this paper, we investigate the index coding problem in the presence of an eavesdropper. Messages are to be sent from one transmitter to a number of legitimate receivers who have side information about the messages, and share a set of secret keys with the transmitter. We assume perfect secrecy, meaning that the eavesdropper should not be able to retrieve any information about the message set. We study the minimum key lengths for zero-error and perfectly secure index coding problem. On one hand, this problem is a generalization of the index coding problem (and thus a difficult one). On the other hand, it is a generalization of the Shannon's cipher system. We show that a generalization of Shannon's one-time pad strategy is optimal up to a multiplicative constant, meaning that it obtains the entire boundary of the cone formed by looking at the secure rate region from the origin. Finally, we consider relaxation of the perfect secrecy and zero-error constraints to weak secrecy and asymptotically vanishing probability of error, and provide a secure version of the result, obtained by Langberg and Effros, on the equivalence of zero-error and $ε$-error regions in the conventional index coding problem.

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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