Abstract— A new encryption algorithm based on subblock processing in which one-way mixing functions obtained from a dynamic chaotic system, is presented and analyzed. The algo- rithm is based on an expansion of the Feistel Cipher scheme, where the round function operates on a more grained subblock and both the key generations and the round functions are ob- tained from the quantized trajectory of chaotic systems. The pa- per gives details on the algorithm implementation and proposes a differential cryptanalysis investigation showing the algorithm robustness as a function of the used chaotic map. A final compar- ison with DES-like cryptosystem shows the effectiveness of our proposal in terms of minimum number of steps required to break the system.
Security Issues Mased on Chaotic Systems
FILIPPINI, Andrea;BERGAMO, PIERPAOLO;MAZZINI, Gianluca
2002
Abstract
Abstract— A new encryption algorithm based on subblock processing in which one-way mixing functions obtained from a dynamic chaotic system, is presented and analyzed. The algo- rithm is based on an expansion of the Feistel Cipher scheme, where the round function operates on a more grained subblock and both the key generations and the round functions are ob- tained from the quantized trajectory of chaotic systems. The pa- per gives details on the algorithm implementation and proposes a differential cryptanalysis investigation showing the algorithm robustness as a function of the used chaotic map. A final compar- ison with DES-like cryptosystem shows the effectiveness of our proposal in terms of minimum number of steps required to break the system.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
