Hyperchaotic system‐based pseudorandom number generator
| Autor: | Xiaojun Tong, Yang Liu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pseudorandom number generator
Generator (computer programming) Computer Networks and Communications Random number generation Self-shrinking generator Lyapunov exponent Pseudorandom generator theorem Fixed point 01 natural sciences Nonlinear Sciences::Chaotic Dynamics symbols.namesake Control theory Linear congruential generator 0103 physical sciences symbols 010306 general physics 010301 acoustics Software Information Systems Mathematics |
| Zdroj: | IET Information Security. 10:433-441 |
| ISSN: | 1751-8717 |
| DOI: | 10.1049/iet-ifs.2015.0024 |
| Popis: | Pseudorandom sequences are very important in the field of cryptography. The characteristics such as non-linearity and random-like behaviours make chaotic systems suited to generate pseudorandom sequences. However, most of chaos-based pseudorandom number generators have a typical shortcoming. That is, the finite precision in all processors may cause the chaotic systems to degenerate into a periodic function or a fixed point. To overcome this shortcoming, a hyperchaos-based generator is proposed. First, a new hyperchaotic system with bigger Lyapunov exponent is constructed. Then the self-shrinking generator, which is superior to many other linear feedback shift register-based generators, is used to perturb the hyperchaotic sequences to decrease the period degeneration and improve the performance of the sequences. The proposed generator is named as hyperchaos with self-shrinking perturbance generator (H-SSP generator). The analysis results show that the H-SSP generator has better performance. |
| Databáze: | OpenAIRE |
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