A novel secret sharing with two users based on joint transform correlator and compressive sensing

Abstract

Recently, joint transform correlator (JTC) has been widely applied to image encryption and authentication. This paper presents a novel secret sharing scheme with two users based on JTC. Two users must be present during the decryption that the system has high security and reliability. In the scheme, two users use their fingerprints to encrypt plaintext, and they can decrypt only if both of them provide the fingerprints which are successfully authenticated. The linear relationship between the plaintext and ciphertext is broken using the compressive sensing, which can resist existing attacks on JTC. The results of the theoretical analysis and numerical simulation confirm the validity of the system.

Keywords:

• Image encryption
• authentication
• joint transform correlator
• compressive sensing

Acknowledgements

The authors would like to thank the editor and reviewers for their valuable comments on the manuscript. Those comments are helpful and have an important guiding significance to our research.