10 February 2017 Speckle-correlation-based ciphertext-only attack on the double random phase encoding scheme
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Proceedings Volume 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016); 102502I (2017) https://doi.org/10.1117/12.2266736
Event: Fourth International Conference on Optical and Photonics Engineering, 2016, Chengdu, China
Abstract
The speckle correlation technique is applied to ciphertext-only attack (COA) on optical cryptosystem based on double random phase encoding. According to the inherent merits of speckle correlation, we have revealed a fact that the ciphertext’s autocorrelation is essentially identical to the plaintext’s own autocorrelation. Then, a plaintext image can be directly reconstructed from the autocorrelation of its corresponding ciphertext by employing a iterate phase-retrieval algorithm. This could then lead to a potential security flaw because an unauthorized user could directly retrieve the plaintext from an intercepted ciphertext by performing proposed COA approach. Meanwhile, a series of numerical simulations will also be provided to verify the validity and feasibility of our proposed COA method.
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Meihua Liao, Dajiang Lu, Wenqi He, Xiang Peng, "Speckle-correlation-based ciphertext-only attack on the double random phase encoding scheme", Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102502I (10 February 2017); doi: 10.1117/12.2266736; https://doi.org/10.1117/12.2266736
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