1. D.G. Feng, Z. Min, L. Hao, Big data security and privacy protection. Chin. J. Comput. Phys. 37(1), 246–258 (2014)
2. J. Liu, H. Wang, Image protection scheme based on privacy protection in content sharing environment. Comp. Appl. Software 32(7), 207–211 (2015)
3. X. Lu, X. Han, Research on big data security and privacy protection technology architecture. Inform. Secur. Res. 2(3), 244–250 (2016)
4. Y. Liu, T. Zhang, X. Jin, et al., Personal privacy protection in big data era. J. Comput. Res. Dev. 52(1), 229–247 (2015)
5. I.J. Cox, J. Kilian, F.T. Leighton, et al., Secure spread spectrum watermarking for multimedia. IEEE Trans. Image Process. 6, 1673–1687 (1997)