Mobile platforms have become extremely popular among users and hence become an important platform for developers. New privacy and security issues arise with the prevalence of mobile computing due to the fact that mobile devices often store tremendous amount of personal, financial and commercial data, and therefore attract both targeted and mass-scale attacks. To meet the society’s growing demand for mobile computing and security professionals, it is vitally important to provide various cryptographic techniques, so that we can secure our data and other important information from malicious users sitting on the Internet.