论文标题
部分数据包恢复对随机线性编码固有的保密性的影响
The Impact of Partial Packet Recovery on the Inherent Secrecy of Random Linear Coding
论文作者
论文摘要
本文考虑了一个来源，该来源采用随机线性编码（RLC）来编码消息，合法的目的地，如果消息收集足够数量的编码数据包和一个窃听器，则可以恢复该消息。在文献中已经研究了窃听器积累足够的编码数据包的概率（称为截距概率）。在我们的工作中，如果RLC解码不成功，则窃听者不会放弃其努力获取源信息；取而代之的是，它使用部分数据包恢复（PPR）离线，以便在尝试再次解码RLC之前错误地修复编码数据包。结果表明，与RLC解码相比，当通道条件良好时，PPR辅助RLC解码略有增加截距概率。但是，随着通道条件的恶化，即使窃听器经历了比目的地相似或更差的通道条件，但PPR辅助RLC解码显着提高了窃听器恢复源消息的机会。
This paper considers a source, which employs random linear coding (RLC) to encode a message, a legitimate destination, which can recover the message if it gathers a sufficient number of coded packets, and an eavesdropper. The probability of the eavesdropper accumulating enough coded packets to recover the message, known as the intercept probability, has been studied in the literature. In our work, the eavesdropper does not abandon its efforts to obtain the source message if RLC decoding has been unsuccessful; instead, it employs partial packet recovery (PPR) offline in an effort to repair erroneously received coded packets before it attempts RLC decoding again. Results show that PPR-assisted RLC decoding marginally increases the intercept probability, compared to RLC decoding, when the channel conditions are good. However, as the channel conditions deteriorate, PPR-assisted RLC decoding significantly improves the chances of the eavesdropper recovering the source message, even if the eavesdropper experiences similar or worse channel conditions than the destination.
