A hybrid strategy for cryptanalysis of optical encryption based on double-random phase-amplitude encoding

作者：He, Wenqi; Peng, Xiang^*; Meng, Xiangfeng

来源：Optics and Laser Technology, 2012, 44(5): 1203-1206.

DOI：10.1016/j.optlastec.2012.01.021

• Optical cryptanalysis
• Optical encryption
• Phase retrieval

A hybrid two-step attack scheme that combines the chosen-plaintext attack (CPA) and the known-plaintext attack (KPA) algorithms is proposed to acquire the secret keys of the optical cryptosystem based on double-random phase-amplitude encoding (DRPAE) technique. By implementing our presented attack, an opponent can obtain not only the estimated solutions of the two random phase keys but also the accurate solution of the amplitude modulator (AM), which is introduced to the encryption process and regarded as an additional key to enhance the security level of the DRPAE-based cryptosystem. The validity and effectiveness of this attack strategy is analyzed theoretically and then verified by computer simulations.

• 出版日期2012-7
• 单位深圳大学; 山东大学