A Novel Image Encryption Method Based On Couple Mapped Lattice and Two-Stage Diffusion
Yunsheng Zhong, Xu Xu · International Journal of Security and Its Applications · 2015
Currently, electronic cash system is one of the most important ways of electronic payment businesses, which requires quick payment and countermeasures against cyber-crime such as falsification of information, double-spending and money-tampering.In this paper, we proposed an efficient elliptic certificateless group signature with forward security and member revocation based on ACJT group signature.Compared to ACJT, our scheme has a shorter length of signature with less parameters and only involves a smaller amount of computation, leading to a higher efficiency.We also proposed a fair off-line multi-bank e-cash system based on the newly-proposed group signature scheme.The new e-cash system is considered to have high security and efficiency.And we proved its unforgeability, and prevention against double-spending and money-tampering actions.Our scheme has a significant advantage over the other schemes.