Hybrid encryption scheme based on temporal ghost imaging

摘要

In this study, we propose an optical hybrid encryption scheme based on compressive temporal ghost imaging. This scheme combines the asymmetric of the public key cryptography and the non-linear of ghost imaging. First, according to the principle of temporal ghost image encryption, the chaotic modulation pattern is used as the key to encrypt the plaintext information, and then the chaotic pattern is encrypted by the public key cryptography. Then, only the authorized receiver can decrypt the chaotic pattern with the private key. Finally, the plaintext can be decrypted with the compressive sensing algorithm. This scheme solves the problem of key distribution in traditional ghost imaging encryption scheme. At the same time, the application of public key cryptography reduces the cost of establishing private channels and enhances the security of the system. In addition, feasibility, security, and robustness of the scheme were verified by simulation. This scheme has the advantages of high quality, high safety, wide applicability and low cost, which can immediately be applied to encryption.