In this book, three recent electronic cash (e-cash) systems, Juang-Liaw?s divisible e-cash, Juang?s D- cash, and Chen-Jan-Chen?s deposit delegation scheme, are first reviewed. Then, a novel e-cash system based on bilinear pairing is designed to attain a more secure and efficient level which has the function of anonymity revocation. To achieve the anonymity revocation function, we construct a new ID- based blind signature scheme where the blindly signed message contains a trustee-approved token which is embedded with user?s identity. Moreover, to efficiently implement the function, we evoke a trustee to perform the task by simply using one symmetric encryption and one exclusive-or operation. Besides, we incorporate mutual authentication and key agreement into our design to get rid of the necessity of running under a pre-established secure channel as usually needed in previous studies. This can reduce the communicational overhead. After security analyses and...

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