A fast image encryption system based on chaotic maps with finite precision representation
| Autor: | Hong Sze Kwok, Wallace K. S. Tang |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
General Mathematics
Applied Mathematics Chaotic General Physics and Astronomy Statistical and Nonlinear Physics law.invention Probabilistic encryption law Test suite Quantization (image processing) Cryptanalysis Fixed-point arithmetic Throughput (business) Algorithm Stream cipher Computer Science::Cryptography and Security Mathematics |
| Zdroj: | Chaos, Solitons & Fractals. 32:1518-1529 |
| ISSN: | 0960-0779 |
| DOI: | 10.1016/j.chaos.2005.11.090 |
| Popis: | In this paper, a fast chaos-based image encryption system with stream cipher structure is proposed. In order to achieve a fast throughput and facilitate hardware realization, 32-bit precision representation with fixed point arithmetic is assumed. The major core of the encryption system is a pseudo-random keystream generator based on a cascade of chaotic maps, serving the purpose of sequence generation and random mixing. Unlike the other existing chaos-based pseudo-random number generators, the proposed keystream generator not only achieves a very fast throughput, but also passes the statistical tests of up-to-date test suite even under quantization. The overall design of the image encryption system is to be explained while detail cryptanalysis is given and compared with some existing schemes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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