Speckle-correlation-based ciphertext-only attack on the double random phase encoding scheme

Meihua Liao; Dajiang Lu; Wenqi He; Xiang Peng

doi:10.1117/12.2266736

10 February 2017 Speckle-correlation-based ciphertext-only attack on the double random phase encoding scheme

Meihua Liao, Dajiang Lu, Wenqi He, Xiang Peng

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.

Citation Download Citation

Meihua Liao, Dajiang Lu, Wenqi He, and 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); https://doi.org/10.1117/12.2266736

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