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首页> 外文会议>IEEE International Workshop on Information Forensics and Security >PROCESSING IN THE ENCRYPTED DOMAIN USING A COMPOSITE SIGNAL REPRESENTATION: PROS AND CONS
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PROCESSING IN THE ENCRYPTED DOMAIN USING A COMPOSITE SIGNAL REPRESENTATION: PROS AND CONS

机译：使用复合信号表示处理加密域：优点和缺点

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摘要

The current solutions for secure processing in the encrypted domain are usually based on homomorphic cryptosystems operating on very large algebraic structures. Recently, a composite signal representation has been proposed that allows to speed up linear operations on encrypted signals via parallel processing and to reduce the size of the encrypted signals. Though many of the most common signal processing operations can be applied to composite signals, some operations require to process the signal samples independently from each other, thus requiring an unpacking of the composite signals. In this paper, we will address the above issues, showing both merits and limits of the composite signal representation when applied in practical scenarios. A secure protocol for converting an encrypted composite representation into the encryptions of the single signal samples will be introduced. A case study clearly highlights pros and cons of using the composite signal representation in the proposed scenarios.
机译：加密域中的安全处理的当前解决方案通常基于在非常大的代数结构上运行的同态密码系统。最近，已经提出了一种复合信号表示，其允许通过并行处理加速加密信号上的线性操作，并减小加密信号的大小。尽管可以将许多最常见的信号处理操作应用于复合信号，但是一些操作需要彼此独立地处理信号样本，从而需要打开复合信号的包装。在本文中，我们将解决上述问题，在实际情况下应用时显示复合信号表示的效率和限制。将引入将加密的复合表示转换成单个信号样本的加密的安全协议。案例研究清楚地突出了在所提出的场景中使用复合信号表示的优缺点。

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