
Αντικείμενο της παρούσας εργασίας είναι η μελέτη της ευστάθειας (stability) και της ευρωστίας (robustness), υπό κανονικές και υπό συνθήκες εξωτερικού θορύβου, τριων αντιπροσωπευτικών συστημάτων χαοτικής κρυπτογραφίας, που υλοποιούν την κρυπτογραφική τους λειτουργία χρησιμοποιώντας χαοτικό σήμα για την μεταφορά και την κρυπτογράφηση της πληροφορίας. Η σχεδίαση και η προσομοίωση των αντίστοιχων ηλεκτρονικών κυκλωμάτων έγινε με τη χρήση του περιβάλλοντος Multisim. Η παρούσα εργασία αποσκοπεί στην σύγκριση των παραγόμενων αποτελεσμάτων σε σχέση με την επιθυμητή ασφάλεια (security) που παρέχει η χρήση καθενός από τα τρία κυκλώματα χαοτικής κρυπτογράφησης.
The subject of the present thesis is a study of the stability and the robustness, under regular and under external noise conditions, of three representative chaotic cryptography systems, which implement their cryptography function by using a chaotic signal to carry and encrypt information. The corresponding electronic circuits were designed, and their responses were simulated using Multisim. The purpose of this thesis is to compare the produced results in relation to the desired security that each of the three chaotic cryptographic circuits provides.
communication systems security, chaotic cryptography, chaos, nonlinear circuits, synchronization
communication systems security, chaotic cryptography, chaos, nonlinear circuits, synchronization
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