A user-friendly authentication solution using NFC card emulation on android

The security of the authentication scheme plays a more and more important role in today's web service systems as people's daily are increasingly depending on these services and user credentials are collected and stored online. An insecure authentication system will become a great threat for users' privacy. Beside security, usability is also very important for the design of an authentication system. Traditional password-based authentication solutions are often susceptible to various attacks due to the weak passwords chosen by incautious users. This paper illustrates a secure yet simple implementation, which uses digital signature algorithm to authenticate user identities. The proposed design brings usability and convenience to the authentication scheme by taking advantage of the increasingly widespread mobile devices. Full comparisons with existing systems in terms of their security, usability and deploy ability will also be presented in this paper.