Aïssa Belmeguenai

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In this communication, we propose a stream cipher system based on nonlinear filter generator for speech data encryption. The cipher is simple and highly efficient. It is implemented to encrypt and decrypt speeches data. Several experimental tests are done for proving the system performance. The results show that the proposed scheme is secure certain attacks.
The faults monitoring of the asynchronous machine using the stator current is of great interest, since this latter is an accessible and a measurable quantity. The spectral analysis of the stator current makes it possible to highlight the characteristic frequencies of the faults but in a broad frequency band depend on half of the sampling rate, which makes(More)
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