| Summary: | 碩士 === 國立臺灣科技大學 === 資訊管理系 === 101 === With the advances in digital technology and the popularity of mobile networks, many mobile commerce applications evolved quickly. Without time and space constraints, it is more convenient to get information and services through internet. Portability of Mobile Coupon and the convenience to exchange coupon, can effectively increase business revenue. And it is also one of the important tools of advertising and marketing. However, using the technique of broadcast encryption to provide confidentiality and verifiability of digital content, and design a flexible and secure transfer mechanism of Mobile Coupon, become an important issue of mobile value-added services and transaction. According to this, this thesis proposes a secure push mechanism based on Bilinear Maps of Broadcast Encrytion Scheme and the Chameleon Hash function, with transferability for mobile applications. In this thesis, the proposed method can achieve the requirements of confidentiality, undeniable, unforgeability, verifiability, resisting replay attacks and transferability.
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