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Erschienen in:
2019 | OriginalPaper | Buchkapitel
2. Electromagnetic Information Fundamental and Leakage Mechanism
verfasst von : Taikang Liu, Yongmei Li
Erschienen in: Electromagnetic Information Leakage and Countermeasure Technique
Verlag: Springer Singapore
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Abstract
On the basis of the theory of electromagnetic radiation and information propagation, this chapter describes the generation of electromagnetic wave and mechanism of electromagnetic radiation leakage, and discusses the ways of electromagnetic information leakage of information devices and corresponding anti-leakage methods. In view of the internal relations and its ways of expression between the digital information and the electromagnetic radiation from the information devices, combining the principle of information theory, the electromagnetic information model is established; meanwhile, a model for reconstruction and reproduction under noise condition is given to answer the question whether the electromagnetic information intercepted would be able to be reconstructed and reproduced.