Abstract
We present a stream cipher based on a chaotic dynamical system. Using a chaotic trajectory sampled under certain rules in order to avoid any attempt to reconstruct the original one, we create a binary pseudo-random keystream that can only be exactly reproduced by someone that has fully knowledge of the communication system parameters formed by a transmitter and a receiver, sharing the same initial conditions. The plaintext is XOR'ed with the keystream creating the ciphertext, the encrypted message. This keystream passes the NIST's randomness test and has been implemented in a videoconference App for smartphones, in order to show the fast and light nature of the proposed encryption system.
Original language | English |
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Pages (from-to) | 1601-1610 |
Number of pages | 10 |
Journal | The European Physical Journal. Special Topics |
Volume | 223 |
Issue number | 8 |
Early online date | 13 May 2014 |
DOIs | |
Publication status | Published - Jun 2014 |