No abstract

No abstract

In this paper, we propose an efficient authenticated encryption scheme based on elliptic curve cryptography. The proposed scheme does not need to construct any digital signature, so the computation costs can be greatly reduced. In addition, we also use the proposed authenticated encryption scheme to design a secure electronic payment system. The proposed electronic payment system provides the security requirements of confidentiality, authenticity, integrity, privacy protection, and double-spending prevention. According to the results of this paper, the proposed authenticated encryption scheme can be easily implemented in mobile payment environments. Besides, it can be also applied to electronic auction, online meeting, and electronic voting.

No abstract

Digital rights management (DRM) is a term for access control technologies that are used by hardware manufacturers, publishers, copyright holders, and individuals to limit the use of digital content and devices. Enterprise digital rights management (E‐DRM) is the application of DRM technology to prevent illegal users from accessing the confidential data of an enterprise. In 2010, Chang et al. proposed an efficient E‐DRM scheme to solve the flaws of Chen's scheme. However, we still found some weaknesses in their scheme. In this article, we propose an improved secure and efficient E‐DRM mechanism based on a one‐way hash function and exclusive‐or. Our mechanism overcomes the weaknesses in the scheme of Chang et al. and also reduces computation costs. In addition, we used BAN logic to show the correctness of our mechanism. Copyright © 2012 John Wiley & Sons, Ltd.