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Information technologies based on dynamic chaos are considered. Their promising applications in data transmission, processing, storage, and protection are reviewed. Wideband data transmission channels that use complex signals with a large processing gain produced by dynamic chaotic systems are described. Finite dimensional mathematical algorithms are proposed for calculation of chaotic signals by reconstructing nonlin ear dynamics in dissipative systems with delay. It is shown that a digital data transmission system with spread spectrum and dynamic code escape exhibits high noise immunity and security, is electromagnetically compat ible with other devices, and guarantees reliable and confidential data transmission in a complex electromagnetic environment. Schemes of data masking, protection, processing, and transmission are implemented in original chaotic algorithms.

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