A method for fast implementation of Fourier transform with secured use of cloud computing

Authors

DOI:

https://doi.org/10.18372/2073-4751.80.19785

Keywords:

discrete Fourier transformation, systems for remote monitoring of the state of real-world objects, homomorphic encryption, protection using of remote computing power

Abstract

The article proposes a method for fast implementation of the discrete Fourier trans-form (DFT) on a terminal microcontroller (TMC), which is based on additive masking of signals and is distinguished by the fact that it updates the mask by changing its bit layers, which allows to update the mask before processing each input signal. The basic procedures of the method are theoretically justified and described in detail. An analysis of the effec-tiveness of the proposed method of homomorphic encryption of signal readings from a real object was performed. It is shown that due to the use of a faster procedure for updating the mask by changing its bit layers, the level of protection of signal readings against attempts to illegally restore them in the cloud is significantly increased. This is achieved by changing the mask for each signal.

It is also shown that the proposed method can reduce the time of encryption and de-cryption by two times. The conducted experimental studies generally confirmed the results obtained by theoretical evaluation of efficiency.

References

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Published

2025-03-15

Issue

Section

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