Image encryption based on double random phase encoding
| Autor: | Wei Qi Yan, Mee Loong Yang, Zhe Liu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
business.industry
Computer science 02 engineering and technology 021001 nanoscience & nanotechnology Encryption 01 natural sciences Discrete Fourier transform Scrambling Image (mathematics) 010309 optics Encoding (memory) Computer Science::Multimedia 0103 physical sciences Discrete cosine transform Logistic map 0210 nano-technology business Algorithm Complex number Computer Science::Cryptography and Security |
| Zdroj: | IVCNZ |
| DOI: | 10.1109/ivcnz.2017.8402486 |
| Popis: | In this paper, we propose an improved image encryption algorithm based on double random phase encoding (DRPE). Our contribution is the design of a new algorithm which uses Discrete Cosine Transform (DCT) to replace Discrete Fourier Transform (DFT) so as to avoid operations on complex numbers. We use a logistic map to generate random matrices instead of random phase masks in the traditional DRPE so as to decrease the number of secret keys. We tested the algorithm using five types of attacks. The results indicate that the improved algorithm overcomes weaknesses of traditional scrambling methods and it has shown strong resilience against statistical attacks. An advantage of this algorithm is that it is convenient to verify whether the encrypted images have been tampered with. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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