A fast and light stream cipher for smartphones

G. Vidal*, M. S. Baptista, H. Mancini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


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 languageEnglish
Pages (from-to)1601-1610
Number of pages10
JournalThe European Physical Journal. Special Topics
Issue number8
Early online date13 May 2014
Publication statusPublished - Jun 2014


Dive into the research topics of 'A fast and light stream cipher for smartphones'. Together they form a unique fingerprint.

Cite this