This useful handbook elucidates the theory and techniques of cryptography and illustrates how to establish and maintain security under the framework of financial cryptography. It applies various cryptographic techniques to auctions, electronic voting, micropayment systems, digital rights, financial portfolios, routing networks, and more. The book describes systems that work together to protect value or enable transactions; presents theories and technologies dealing with trust, risk, and privacy that establish the global identity of objects and users; and explores how human factors, law, and regulations are crucial to the successful deployment of financial cryptography.