Methodology for digital Money based on General Gryptographic Tools

摘要

In this paper we investigate methodologies for off-line digital cash using general cryptographic tools. First we give a way for off-line spending of coins using non-interactive zero-knowledge proofs of knowledge with preprocessing. Under this pardigm and using other general cryptographic tools, we shwo how to obtain the property of dividability of coins and give a techniqeu for avoiding double spending of coins.